./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.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_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/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_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/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_a2fa36aa-f63f-42db-8561-13e494b3e922/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 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 --- 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 20:10:18,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:10:18,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:10:18,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:10:18,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:10:18,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:10:18,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:10:18,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:10:18,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:10:18,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:10:18,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:10:18,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:10:18,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:10:18,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:10:18,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:10:18,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:10:18,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:10:18,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:10:18,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:10:18,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:10:18,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:10:18,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:10:18,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:10:18,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:10:18,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:10:18,678 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:10:18,678 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:10:18,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:10:18,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:10:18,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:10:18,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:10:18,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:10:18,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:10:18,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:10:18,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:10:18,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:10:18,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:10:18,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:10:18,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:10:18,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:10:18,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:10:18,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:10:18,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:10:18,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:10:18,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:10:18,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:10:18,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:10:18,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:10:18,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:10:18,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:10:18,708 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:10:18,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:10:18,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:10:18,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:10:18,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:10:18,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:10:18,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:10:18,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:18,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:10:18,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:10:18,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:10:18,711 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:10:18,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:10:18,711 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:10:18,711 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_a2fa36aa-f63f-42db-8561-13e494b3e922/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b8fef41c3119c5f4fc9586ebd31a4ff7152be41d9f2f8da139e8cd34cf0da86 [2022-12-13 20:10:18,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:10:18,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:10:18,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:10:18,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:10:18,890 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:10:18,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-13 20:10:21,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:10:21,633 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:10:21,633 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-13 20:10:21,638 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/data/70c0d67e1/2edf6280df2941669dc3658a3f2e4840/FLAGfb48b4191 [2022-12-13 20:10:21,650 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/data/70c0d67e1/2edf6280df2941669dc3658a3f2e4840 [2022-12-13 20:10:21,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:10:21,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:10:21,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:21,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:10:21,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:10:21,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7261ae8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21, skipping insertion in model container [2022-12-13 20:10:21,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:10:21,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:10:21,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,795 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,801 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,811 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_a2fa36aa-f63f-42db-8561-13e494b3e922/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-13 20:10:21,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:21,825 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:10:21,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,835 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,836 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,837 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,838 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,839 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,840 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,841 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,842 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,843 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,844 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,845 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:10:21,846 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:10:21,850 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_a2fa36aa-f63f-42db-8561-13e494b3e922/sv-benchmarks/c/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-13 20:10:21,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:10:21,863 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:10:21,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21 WrapperNode [2022-12-13 20:10:21,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:10:21,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:21,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:10:21,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:10:21,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,897 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-12-13 20:10:21,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:10:21,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:10:21,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:10:21,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:10:21,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,920 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:10:21,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:10:21,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:10:21,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:10:21,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (1/1) ... [2022-12-13 20:10:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:10:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:21,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:10:21,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:10:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:10:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:10:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:10:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:10:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 20:10:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 20:10:21,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 20:10:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 20:10:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 20:10:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 20:10:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-13 20:10:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:10:21,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:10:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:10:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:10:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:10:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:10:21,990 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 20:10:22,094 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:10:22,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:10:22,448 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:10:22,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:10:22,571 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 20:10:22,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:22 BoogieIcfgContainer [2022-12-13 20:10:22,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:10:22,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:10:22,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:10:22,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:10:22,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:10:21" (1/3) ... [2022-12-13 20:10:22,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6198974f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:22, skipping insertion in model container [2022-12-13 20:10:22,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:10:21" (2/3) ... [2022-12-13 20:10:22,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6198974f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:10:22, skipping insertion in model container [2022-12-13 20:10:22,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:10:22" (3/3) ... [2022-12-13 20:10:22,579 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-12-13 20:10:22,586 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:10:22,594 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:10:22,594 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:10:22,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:10:22,674 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-13 20:10:22,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 260 transitions, 592 flow [2022-12-13 20:10:22,763 INFO L130 PetriNetUnfolder]: 18/232 cut-off events. [2022-12-13 20:10:22,763 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:22,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 232 events. 18/232 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 285 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-12-13 20:10:22,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 260 transitions, 592 flow [2022-12-13 20:10:22,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 223 transitions, 494 flow [2022-12-13 20:10:22,776 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:10:22,784 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 223 transitions, 494 flow [2022-12-13 20:10:22,786 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 223 transitions, 494 flow [2022-12-13 20:10:22,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 223 transitions, 494 flow [2022-12-13 20:10:22,821 INFO L130 PetriNetUnfolder]: 18/223 cut-off events. [2022-12-13 20:10:22,821 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:22,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 223 events. 18/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 282 event pairs, 0 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 200. Up to 3 conditions per place. [2022-12-13 20:10:22,825 INFO L119 LiptonReduction]: Number of co-enabled transitions 7312 [2022-12-13 20:10:28,275 INFO L134 LiptonReduction]: Checked pairs total: 35198 [2022-12-13 20:10:28,276 INFO L136 LiptonReduction]: Total number of compositions: 192 [2022-12-13 20:10:28,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:10:28,290 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;@7392f025, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:10:28,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 20:10:28,299 INFO L130 PetriNetUnfolder]: 9/64 cut-off events. [2022-12-13 20:10:28,299 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 20:10:28,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:28,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:28,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:28,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:28,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1840939828, now seen corresponding path program 1 times [2022-12-13 20:10:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:28,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760911300] [2022-12-13 20:10:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:28,732 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 20:10:28,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:28,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760911300] [2022-12-13 20:10:28,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760911300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:28,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:28,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:10:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398024513] [2022-12-13 20:10:28,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:28,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:10:28,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:10:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:10:28,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 456 [2022-12-13 20:10:28,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 20:10:28,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:28,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 456 [2022-12-13 20:10:28,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:31,608 INFO L130 PetriNetUnfolder]: 24447/33059 cut-off events. [2022-12-13 20:10:31,608 INFO L131 PetriNetUnfolder]: For 5184/5184 co-relation queries the response was YES. [2022-12-13 20:10:31,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69835 conditions, 33059 events. 24447/33059 cut-off events. For 5184/5184 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 177028 event pairs, 10465 based on Foata normal form. 1/25397 useless extension candidates. Maximal degree in co-relation 68371. Up to 12303 conditions per place. [2022-12-13 20:10:31,752 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 109 selfloop transitions, 8 changer transitions 1/138 dead transitions. [2022-12-13 20:10:31,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 138 transitions, 641 flow [2022-12-13 20:10:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:10:31,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:10:31,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 967 transitions. [2022-12-13 20:10:31,766 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5301535087719298 [2022-12-13 20:10:31,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 967 transitions. [2022-12-13 20:10:31,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 967 transitions. [2022-12-13 20:10:31,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:31,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 967 transitions. [2022-12-13 20:10:31,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 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 20:10:31,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 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 20:10:31,783 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 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 20:10:31,784 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 178 flow. Second operand 4 states and 967 transitions. [2022-12-13 20:10:31,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 138 transitions, 641 flow [2022-12-13 20:10:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 138 transitions, 555 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-13 20:10:31,889 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 199 flow [2022-12-13 20:10:31,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=68, PETRI_TRANSITIONS=72} [2022-12-13 20:10:31,893 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2022-12-13 20:10:31,893 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 199 flow [2022-12-13 20:10:31,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 20:10:31,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:31,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:31,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:10:31,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash -642870778, now seen corresponding path program 2 times [2022-12-13 20:10:31,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:31,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192222710] [2022-12-13 20:10:31,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:31,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:32,098 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 20:10:32,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192222710] [2022-12-13 20:10:32,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192222710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:32,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:32,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:10:32,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930513892] [2022-12-13 20:10:32,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:32,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:10:32,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:32,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:10:32,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:10:32,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 456 [2022-12-13 20:10:32,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 20:10:32,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:32,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 456 [2022-12-13 20:10:32,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:35,995 INFO L130 PetriNetUnfolder]: 40211/53381 cut-off events. [2022-12-13 20:10:35,995 INFO L131 PetriNetUnfolder]: For 11573/11577 co-relation queries the response was YES. [2022-12-13 20:10:36,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119635 conditions, 53381 events. 40211/53381 cut-off events. For 11573/11577 co-relation queries the response was YES. Maximal size of possible extension queue 1371. Compared 287255 event pairs, 15793 based on Foata normal form. 2/40693 useless extension candidates. Maximal degree in co-relation 42951. Up to 22845 conditions per place. [2022-12-13 20:10:36,177 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 115 selfloop transitions, 11 changer transitions 1/147 dead transitions. [2022-12-13 20:10:36,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 147 transitions, 654 flow [2022-12-13 20:10:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:10:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:10:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 969 transitions. [2022-12-13 20:10:36,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.53125 [2022-12-13 20:10:36,180 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 969 transitions. [2022-12-13 20:10:36,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 969 transitions. [2022-12-13 20:10:36,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:36,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 969 transitions. [2022-12-13 20:10:36,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 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 20:10:36,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 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 20:10:36,186 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 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 20:10:36,186 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 199 flow. Second operand 4 states and 969 transitions. [2022-12-13 20:10:36,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 147 transitions, 654 flow [2022-12-13 20:10:36,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 147 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:36,195 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 278 flow [2022-12-13 20:10:36,195 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2022-12-13 20:10:36,196 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2022-12-13 20:10:36,196 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 278 flow [2022-12-13 20:10:36,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.0) internal successors, (880), 4 states have internal predecessors, (880), 0 states have call successors, (0), 0 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 20:10:36,196 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:36,196 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:36,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:10:36,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:36,197 INFO L85 PathProgramCache]: Analyzing trace with hash 876951048, now seen corresponding path program 1 times [2022-12-13 20:10:36,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:36,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471556025] [2022-12-13 20:10:36,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:36,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:36,361 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 20:10:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:36,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471556025] [2022-12-13 20:10:36,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471556025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:36,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:36,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:10:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579315008] [2022-12-13 20:10:36,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:36,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:10:36,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:10:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:10:36,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 456 [2022-12-13 20:10:36,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 0 states have call successors, (0), 0 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 20:10:36,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:36,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 456 [2022-12-13 20:10:36,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:41,636 INFO L130 PetriNetUnfolder]: 50616/69427 cut-off events. [2022-12-13 20:10:41,636 INFO L131 PetriNetUnfolder]: For 37889/37889 co-relation queries the response was YES. [2022-12-13 20:10:41,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167195 conditions, 69427 events. 50616/69427 cut-off events. For 37889/37889 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 421070 event pairs, 15765 based on Foata normal form. 0/55406 useless extension candidates. Maximal degree in co-relation 76079. Up to 27598 conditions per place. [2022-12-13 20:10:41,916 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 159 selfloop transitions, 7 changer transitions 0/186 dead transitions. [2022-12-13 20:10:41,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 186 transitions, 1021 flow [2022-12-13 20:10:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:10:41,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:10:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2022-12-13 20:10:41,919 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2022-12-13 20:10:41,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2022-12-13 20:10:41,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2022-12-13 20:10:41,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:41,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2022-12-13 20:10:41,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 20:10:41,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:10:41,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:10:41,926 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 278 flow. Second operand 6 states and 1384 transitions. [2022-12-13 20:10:41,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 186 transitions, 1021 flow [2022-12-13 20:10:41,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 186 transitions, 1009 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:41,984 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 346 flow [2022-12-13 20:10:41,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=83, PETRI_TRANSITIONS=85} [2022-12-13 20:10:41,984 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2022-12-13 20:10:41,984 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 346 flow [2022-12-13 20:10:41,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 0 states have call successors, (0), 0 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 20:10:41,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:41,985 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:41,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:10:41,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash -869711912, now seen corresponding path program 1 times [2022-12-13 20:10:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:41,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63738140] [2022-12-13 20:10:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:42,266 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 20:10:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:42,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63738140] [2022-12-13 20:10:42,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63738140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:10:42,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:10:42,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:10:42,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336150872] [2022-12-13 20:10:42,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:10:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:10:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:42,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:10:42,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:10:42,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 456 [2022-12-13 20:10:42,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 85 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 20:10:42,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:42,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 456 [2022-12-13 20:10:42,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:46,671 INFO L130 PetriNetUnfolder]: 40749/56487 cut-off events. [2022-12-13 20:10:46,672 INFO L131 PetriNetUnfolder]: For 50097/50097 co-relation queries the response was YES. [2022-12-13 20:10:46,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150764 conditions, 56487 events. 40749/56487 cut-off events. For 50097/50097 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 348827 event pairs, 12302 based on Foata normal form. 0/49854 useless extension candidates. Maximal degree in co-relation 138013. Up to 27338 conditions per place. [2022-12-13 20:10:46,923 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 100 selfloop transitions, 4 changer transitions 51/175 dead transitions. [2022-12-13 20:10:46,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 175 transitions, 995 flow [2022-12-13 20:10:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:10:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:10:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1363 transitions. [2022-12-13 20:10:46,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49817251461988304 [2022-12-13 20:10:46,931 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1363 transitions. [2022-12-13 20:10:46,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1363 transitions. [2022-12-13 20:10:46,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:46,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1363 transitions. [2022-12-13 20:10:46,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 0 states have call successors, (0), 0 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 20:10:46,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:10:46,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:10:46,939 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 346 flow. Second operand 6 states and 1363 transitions. [2022-12-13 20:10:46,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 175 transitions, 995 flow [2022-12-13 20:10:46,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 175 transitions, 993 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 20:10:46,953 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 348 flow [2022-12-13 20:10:46,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2022-12-13 20:10:46,954 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2022-12-13 20:10:46,954 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 348 flow [2022-12-13 20:10:46,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 212.8) internal successors, (1064), 5 states have internal predecessors, (1064), 0 states have call successors, (0), 0 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 20:10:46,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:46,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:46,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:10:46,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:46,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash -136960032, now seen corresponding path program 1 times [2022-12-13 20:10:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:46,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305625679] [2022-12-13 20:10:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:47,156 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 20:10:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305625679] [2022-12-13 20:10:47,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305625679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:47,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298416051] [2022-12-13 20:10:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:47,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:47,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:47,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:47,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:10:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:47,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:10:47,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:47,438 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 20:10:47,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:10:47,502 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 20:10:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298416051] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:10:47,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:10:47,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 20:10:47,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936276719] [2022-12-13 20:10:47,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:10:47,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:10:47,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:47,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:10:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:10:47,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 456 [2022-12-13 20:10:47,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 348 flow. Second operand has 11 states, 11 states have (on average 210.45454545454547) internal successors, (2315), 11 states have internal predecessors, (2315), 0 states have call successors, (0), 0 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 20:10:47,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:47,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 456 [2022-12-13 20:10:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:53,574 INFO L130 PetriNetUnfolder]: 48484/67215 cut-off events. [2022-12-13 20:10:53,574 INFO L131 PetriNetUnfolder]: For 87490/87490 co-relation queries the response was YES. [2022-12-13 20:10:53,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198284 conditions, 67215 events. 48484/67215 cut-off events. For 87490/87490 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 421881 event pairs, 15621 based on Foata normal form. 1128/64215 useless extension candidates. Maximal degree in co-relation 152269. Up to 27338 conditions per place. [2022-12-13 20:10:53,877 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 169 selfloop transitions, 8 changer transitions 0/197 dead transitions. [2022-12-13 20:10:53,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 197 transitions, 1197 flow [2022-12-13 20:10:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:10:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:10:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1577 transitions. [2022-12-13 20:10:53,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2022-12-13 20:10:53,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1577 transitions. [2022-12-13 20:10:53,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1577 transitions. [2022-12-13 20:10:53,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:53,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1577 transitions. [2022-12-13 20:10:53,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.28571428571428) internal successors, (1577), 7 states have internal predecessors, (1577), 0 states have call successors, (0), 0 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 20:10:53,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 20:10:53,888 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 20:10:53,888 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 348 flow. Second operand 7 states and 1577 transitions. [2022-12-13 20:10:53,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 197 transitions, 1197 flow [2022-12-13 20:10:53,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 197 transitions, 1155 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-12-13 20:10:53,914 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 410 flow [2022-12-13 20:10:53,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=410, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2022-12-13 20:10:53,914 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2022-12-13 20:10:53,915 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 410 flow [2022-12-13 20:10:53,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.45454545454547) internal successors, (2315), 11 states have internal predecessors, (2315), 0 states have call successors, (0), 0 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 20:10:53,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:53,915 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:53,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:10:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:54,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:54,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash -781595292, now seen corresponding path program 1 times [2022-12-13 20:10:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:54,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955997419] [2022-12-13 20:10:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:54,310 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 20:10:54,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:10:54,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955997419] [2022-12-13 20:10:54,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955997419] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:10:54,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234012280] [2022-12-13 20:10:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:54,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:10:54,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:10:54,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:10:54,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:10:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:10:54,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 20:10:54,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:10:54,506 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 20:10:54,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:10:54,555 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 20:10:54,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234012280] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:10:54,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:10:54,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 20:10:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830984094] [2022-12-13 20:10:54,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:10:54,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 20:10:54,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:10:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 20:10:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 20:10:54,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 456 [2022-12-13 20:10:54,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 410 flow. Second operand has 11 states, 11 states have (on average 210.27272727272728) internal successors, (2313), 11 states have internal predecessors, (2313), 0 states have call successors, (0), 0 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 20:10:54,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:10:54,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 456 [2022-12-13 20:10:54,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:10:59,266 INFO L130 PetriNetUnfolder]: 40749/56273 cut-off events. [2022-12-13 20:10:59,266 INFO L131 PetriNetUnfolder]: For 72877/72877 co-relation queries the response was YES. [2022-12-13 20:10:59,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169989 conditions, 56273 events. 40749/56273 cut-off events. For 72877/72877 co-relation queries the response was YES. Maximal size of possible extension queue 1566. Compared 338322 event pairs, 12432 based on Foata normal form. 468/53262 useless extension candidates. Maximal degree in co-relation 154835. Up to 26698 conditions per place. [2022-12-13 20:10:59,548 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 100 selfloop transitions, 5 changer transitions 57/182 dead transitions. [2022-12-13 20:10:59,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 182 transitions, 1107 flow [2022-12-13 20:10:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:10:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:10:59,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1568 transitions. [2022-12-13 20:10:59,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2022-12-13 20:10:59,552 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1568 transitions. [2022-12-13 20:10:59,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1568 transitions. [2022-12-13 20:10:59,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:10:59,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1568 transitions. [2022-12-13 20:10:59,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 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 20:10:59,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 20:10:59,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 20:10:59,561 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 410 flow. Second operand 7 states and 1568 transitions. [2022-12-13 20:10:59,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 182 transitions, 1107 flow [2022-12-13 20:10:59,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 182 transitions, 1099 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 20:10:59,582 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 374 flow [2022-12-13 20:10:59,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=374, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2022-12-13 20:10:59,583 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 25 predicate places. [2022-12-13 20:10:59,583 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 374 flow [2022-12-13 20:10:59,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 210.27272727272728) internal successors, (2313), 11 states have internal predecessors, (2313), 0 states have call successors, (0), 0 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 20:10:59,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:10:59,584 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:10:59,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:10:59,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:10:59,786 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:10:59,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:10:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash -280238306, now seen corresponding path program 2 times [2022-12-13 20:10:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:10:59,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204118125] [2022-12-13 20:10:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:10:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:10:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:11:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:00,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204118125] [2022-12-13 20:11:00,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204118125] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:00,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696773352] [2022-12-13 20:11:00,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:11:00,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:00,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:00,014 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:00,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:11:00,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:11:00,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:11:00,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:11:00,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:11:00,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:11:00,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696773352] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:11:00,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:11:00,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 20:11:00,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292561990] [2022-12-13 20:11:00,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:11:00,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 20:11:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:00,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 20:11:00,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:11:00,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 456 [2022-12-13 20:11:00,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 374 flow. Second operand has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 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 20:11:00,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:00,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 456 [2022-12-13 20:11:00,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:03,886 INFO L130 PetriNetUnfolder]: 28494/38679 cut-off events. [2022-12-13 20:11:03,886 INFO L131 PetriNetUnfolder]: For 69987/69987 co-relation queries the response was YES. [2022-12-13 20:11:03,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125623 conditions, 38679 events. 28494/38679 cut-off events. For 69987/69987 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 211245 event pairs, 15424 based on Foata normal form. 1152/37794 useless extension candidates. Maximal degree in co-relation 125578. Up to 32677 conditions per place. [2022-12-13 20:11:04,079 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 89 selfloop transitions, 7 changer transitions 0/116 dead transitions. [2022-12-13 20:11:04,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 707 flow [2022-12-13 20:11:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:11:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:11:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1310 transitions. [2022-12-13 20:11:04,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788011695906433 [2022-12-13 20:11:04,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1310 transitions. [2022-12-13 20:11:04,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1310 transitions. [2022-12-13 20:11:04,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:11:04,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1310 transitions. [2022-12-13 20:11:04,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.33333333333334) internal successors, (1310), 6 states have internal predecessors, (1310), 0 states have call successors, (0), 0 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 20:11:04,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:11:04,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:11:04,087 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 374 flow. Second operand 6 states and 1310 transitions. [2022-12-13 20:11:04,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 707 flow [2022-12-13 20:11:04,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 116 transitions, 657 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-12-13 20:11:04,117 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 372 flow [2022-12-13 20:11:04,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2022-12-13 20:11:04,118 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 18 predicate places. [2022-12-13 20:11:04,118 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 372 flow [2022-12-13 20:11:04,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 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 20:11:04,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:04,119 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:04,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:11:04,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:04,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:11:04,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash -164949037, now seen corresponding path program 1 times [2022-12-13 20:11:04,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:04,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786200266] [2022-12-13 20:11:04,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:04,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:11:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786200266] [2022-12-13 20:11:04,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786200266] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353662828] [2022-12-13 20:11:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:04,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:04,479 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:04,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:11:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:04,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 20:11:04,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:11:04,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:11:04,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353662828] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:04,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 20:11:04,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-12-13 20:11:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993664559] [2022-12-13 20:11:04,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:11:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 20:11:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 20:11:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-13 20:11:04,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 456 [2022-12-13 20:11:04,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 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 20:11:04,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:04,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 456 [2022-12-13 20:11:04,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:07,169 INFO L130 PetriNetUnfolder]: 21901/29421 cut-off events. [2022-12-13 20:11:07,169 INFO L131 PetriNetUnfolder]: For 40723/40723 co-relation queries the response was YES. [2022-12-13 20:11:07,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95485 conditions, 29421 events. 21901/29421 cut-off events. For 40723/40723 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 150073 event pairs, 10095 based on Foata normal form. 816/28794 useless extension candidates. Maximal degree in co-relation 95446. Up to 25062 conditions per place. [2022-12-13 20:11:07,302 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 93 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2022-12-13 20:11:07,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 720 flow [2022-12-13 20:11:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:11:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 20:11:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1310 transitions. [2022-12-13 20:11:07,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788011695906433 [2022-12-13 20:11:07,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1310 transitions. [2022-12-13 20:11:07,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1310 transitions. [2022-12-13 20:11:07,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:11:07,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1310 transitions. [2022-12-13 20:11:07,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.33333333333334) internal successors, (1310), 6 states have internal predecessors, (1310), 0 states have call successors, (0), 0 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 20:11:07,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:11:07,311 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 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 20:11:07,311 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 372 flow. Second operand 6 states and 1310 transitions. [2022-12-13 20:11:07,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 720 flow [2022-12-13 20:11:07,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 695 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 20:11:07,340 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 388 flow [2022-12-13 20:11:07,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2022-12-13 20:11:07,340 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2022-12-13 20:11:07,340 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 388 flow [2022-12-13 20:11:07,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 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 20:11:07,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:07,341 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:07,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:11:07,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:07,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:11:07,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1692972442, now seen corresponding path program 1 times [2022-12-13 20:11:07,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:07,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005377184] [2022-12-13 20:11:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:07,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:11:08,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:08,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005377184] [2022-12-13 20:11:08,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005377184] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:08,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261900453] [2022-12-13 20:11:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:08,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:08,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:08,426 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:08,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 20:11:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:08,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 20:11:08,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:08,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:11:08,761 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 16 treesize of output 18 [2022-12-13 20:11:08,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:11:08,878 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 16 treesize of output 18 [2022-12-13 20:11:08,910 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 20:11:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:11:08,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:09,130 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) (and (forall ((v_ArrVal_496 (Array Int Int))) (< (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_496) c_~X_0~0.base) .cse0)) (+ 1 c_~s_2~0))) (forall ((v_ArrVal_496 (Array Int Int))) (<= c_~s_2~0 (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0.base| v_ArrVal_496) c_~X_0~0.base) .cse0)))))) is different from false [2022-12-13 20:11:10,122 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread4Thread1of1ForFork0_~#t5~0.base_34| Int)) (or (forall ((v_ArrVal_496 (Array Int Int))) (< (select (select (store |c_#memory_int| |v_thread4Thread1of1ForFork0_~#t5~0.base_34| v_ArrVal_496) c_~X_0~0.base) .cse0) (+ 1 c_~s_2~0))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork0_~#t5~0.base_34|)))) (forall ((|v_thread4Thread1of1ForFork0_~#t5~0.base_34| Int)) (or (forall ((v_ArrVal_496 (Array Int Int))) (<= c_~s_2~0 (select (select (store |c_#memory_int| |v_thread4Thread1of1ForFork0_~#t5~0.base_34| v_ArrVal_496) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork0_~#t5~0.base_34|)))))) is different from false [2022-12-13 20:11:12,197 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread4Thread1of1ForFork0_~#t5~0.base_34| Int) (v_ArrVal_495 (Array Int Int))) (or (forall ((v_ArrVal_496 (Array Int Int))) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_495) |v_thread4Thread1of1ForFork0_~#t5~0.base_34| v_ArrVal_496) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork0_~#t5~0.base_34|)))) (forall ((|v_thread4Thread1of1ForFork0_~#t5~0.base_34| Int) (v_ArrVal_495 (Array Int Int))) (or (forall ((v_ArrVal_496 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_495) |v_thread4Thread1of1ForFork0_~#t5~0.base_34| v_ArrVal_496) c_~X_0~0.base) .cse0) (+ c_~t_4~0 1 c_~s_2~0))) (not (< |c_#StackHeapBarrier| |v_thread4Thread1of1ForFork0_~#t5~0.base_34|)))))) is different from false [2022-12-13 20:11:12,246 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:11:12,246 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 108 treesize of output 76 [2022-12-13 20:11:12,250 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 66 treesize of output 58 [2022-12-13 20:11:12,255 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 30 treesize of output 26 [2022-12-13 20:11:12,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:11:12,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:11:12,330 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:11:12,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 10 [2022-12-13 20:11:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:11:12,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261900453] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:11:12,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:11:12,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 29 [2022-12-13 20:11:12,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381971021] [2022-12-13 20:11:12,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:11:12,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 20:11:12,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 20:11:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=657, Unknown=10, NotChecked=162, Total=930 [2022-12-13 20:11:12,523 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 456 [2022-12-13 20:11:12,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 388 flow. Second operand has 31 states, 31 states have (on average 171.25806451612902) internal successors, (5309), 31 states have internal predecessors, (5309), 0 states have call successors, (0), 0 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 20:11:12,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:12,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 456 [2022-12-13 20:11:12,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:11:24,027 INFO L130 PetriNetUnfolder]: 77476/100969 cut-off events. [2022-12-13 20:11:24,027 INFO L131 PetriNetUnfolder]: For 134060/134060 co-relation queries the response was YES. [2022-12-13 20:11:24,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328461 conditions, 100969 events. 77476/100969 cut-off events. For 134060/134060 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 546740 event pairs, 14562 based on Foata normal form. 1/97585 useless extension candidates. Maximal degree in co-relation 328421. Up to 43606 conditions per place. [2022-12-13 20:11:24,509 INFO L137 encePairwiseOnDemand]: 418/456 looper letters, 535 selfloop transitions, 151 changer transitions 1/697 dead transitions. [2022-12-13 20:11:24,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 697 transitions, 4163 flow [2022-12-13 20:11:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:11:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 20:11:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4628 transitions. [2022-12-13 20:11:24,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4228801169590643 [2022-12-13 20:11:24,517 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4628 transitions. [2022-12-13 20:11:24,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4628 transitions. [2022-12-13 20:11:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:11:24,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4628 transitions. [2022-12-13 20:11:24,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 192.83333333333334) internal successors, (4628), 24 states have internal predecessors, (4628), 0 states have call successors, (0), 0 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 20:11:24,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 456.0) internal successors, (11400), 25 states have internal predecessors, (11400), 0 states have call successors, (0), 0 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 20:11:24,534 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 456.0) internal successors, (11400), 25 states have internal predecessors, (11400), 0 states have call successors, (0), 0 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 20:11:24,535 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 388 flow. Second operand 24 states and 4628 transitions. [2022-12-13 20:11:24,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 697 transitions, 4163 flow [2022-12-13 20:11:24,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 697 transitions, 4143 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 20:11:24,646 INFO L231 Difference]: Finished difference. Result has 129 places, 250 transitions, 1758 flow [2022-12-13 20:11:24,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1758, PETRI_PLACES=129, PETRI_TRANSITIONS=250} [2022-12-13 20:11:24,647 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 54 predicate places. [2022-12-13 20:11:24,647 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 250 transitions, 1758 flow [2022-12-13 20:11:24,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 171.25806451612902) internal successors, (5309), 31 states have internal predecessors, (5309), 0 states have call successors, (0), 0 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 20:11:24,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:11:24,649 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:11:24,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 20:11:24,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 20:11:24,850 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:11:24,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:11:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 306891346, now seen corresponding path program 2 times [2022-12-13 20:11:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:11:24,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718084176] [2022-12-13 20:11:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:11:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:11:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:11:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:11:25,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:11:25,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718084176] [2022-12-13 20:11:25,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718084176] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:11:25,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302859781] [2022-12-13 20:11:25,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:11:25,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:11:25,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:11:25,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:11:25,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 20:11:25,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:11:25,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:11:25,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 64 conjunts are in the unsatisfiable core [2022-12-13 20:11:25,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:11:25,828 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 20:11:25,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-13 20:11:25,897 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 20:11:25,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-13 20:11:26,156 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 16 treesize of output 18 [2022-12-13 20:11:26,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:11:26,210 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 16 treesize of output 18 [2022-12-13 20:11:26,243 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 20:11:26,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:11:26,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:11:26,365 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0)))) (and (forall ((v_ArrVal_575 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_575) c_~X_0~0.base) .cse0) c_~s_2~0) (+ c_~s_6~0 1))) (forall ((v_ArrVal_575 (Array Int Int))) (<= c_~s_6~0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_575) c_~X_0~0.base) .cse0) c_~s_2~0))))) is different from false [2022-12-13 20:11:26,443 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_574) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_575) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_574) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_575) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))) is different from false [2022-12-13 20:11:26,499 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_574) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_575) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_574) |c_thread1Thread1of1ForFork3_~#t3~0.base| v_ArrVal_575) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))))) is different from false [2022-12-13 20:11:26,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:11:26,507 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 104 treesize of output 72 [2022-12-13 20:11:26,509 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 62 treesize of output 54 [2022-12-13 20:11:26,512 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 28 treesize of output 24 [2022-12-13 20:11:26,534 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:11:26,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:11:26,539 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:11:26,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 11 [2022-12-13 20:11:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-12-13 20:11:26,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302859781] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:11:26,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:11:26,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2022-12-13 20:11:26,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550136262] [2022-12-13 20:11:26,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:11:26,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 20:11:26,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:11:26,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 20:11:26,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=753, Unknown=14, NotChecked=174, Total=1056 [2022-12-13 20:11:26,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 456 [2022-12-13 20:11:26,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 250 transitions, 1758 flow. Second operand has 33 states, 33 states have (on average 161.4848484848485) internal successors, (5329), 33 states have internal predecessors, (5329), 0 states have call successors, (0), 0 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 20:11:26,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:11:26,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 456 [2022-12-13 20:11:26,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:12:04,738 INFO L130 PetriNetUnfolder]: 194207/252197 cut-off events. [2022-12-13 20:12:04,738 INFO L131 PetriNetUnfolder]: For 1007031/1007293 co-relation queries the response was YES. [2022-12-13 20:12:05,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169748 conditions, 252197 events. 194207/252197 cut-off events. For 1007031/1007293 co-relation queries the response was YES. Maximal size of possible extension queue 5239. Compared 1510787 event pairs, 19427 based on Foata normal form. 34/243117 useless extension candidates. Maximal degree in co-relation 1169695. Up to 169633 conditions per place. [2022-12-13 20:12:06,808 INFO L137 encePairwiseOnDemand]: 420/456 looper letters, 1292 selfloop transitions, 353 changer transitions 42/1697 dead transitions. [2022-12-13 20:12:06,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 1697 transitions, 15090 flow [2022-12-13 20:12:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 20:12:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-13 20:12:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7982 transitions. [2022-12-13 20:12:06,821 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38898635477582844 [2022-12-13 20:12:06,821 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7982 transitions. [2022-12-13 20:12:06,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7982 transitions. [2022-12-13 20:12:06,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:12:06,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7982 transitions. [2022-12-13 20:12:06,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 177.37777777777777) internal successors, (7982), 45 states have internal predecessors, (7982), 0 states have call successors, (0), 0 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 20:12:06,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 456.0) internal successors, (20976), 46 states have internal predecessors, (20976), 0 states have call successors, (0), 0 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 20:12:06,849 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 456.0) internal successors, (20976), 46 states have internal predecessors, (20976), 0 states have call successors, (0), 0 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 20:12:06,850 INFO L175 Difference]: Start difference. First operand has 129 places, 250 transitions, 1758 flow. Second operand 45 states and 7982 transitions. [2022-12-13 20:12:06,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 1697 transitions, 15090 flow [2022-12-13 20:12:56,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 1697 transitions, 14799 flow, removed 122 selfloop flow, removed 2 redundant places. [2022-12-13 20:12:56,046 INFO L231 Difference]: Finished difference. Result has 201 places, 616 transitions, 6017 flow [2022-12-13 20:12:56,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6017, PETRI_PLACES=201, PETRI_TRANSITIONS=616} [2022-12-13 20:12:56,047 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 126 predicate places. [2022-12-13 20:12:56,047 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 616 transitions, 6017 flow [2022-12-13 20:12:56,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 161.4848484848485) internal successors, (5329), 33 states have internal predecessors, (5329), 0 states have call successors, (0), 0 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 20:12:56,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:12:56,048 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:12:56,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 20:12:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:56,249 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:12:56,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:12:56,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2028311241, now seen corresponding path program 1 times [2022-12-13 20:12:56,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:12:56,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122177832] [2022-12-13 20:12:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:56,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:12:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:12:57,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:12:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122177832] [2022-12-13 20:12:57,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122177832] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:12:57,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702017632] [2022-12-13 20:12:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:12:57,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:12:57,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:12:57,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:12:57,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 20:12:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:12:57,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 20:12:57,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:12:57,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:12:57,687 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 21 treesize of output 21 [2022-12-13 20:12:57,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:12:57,774 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 21 treesize of output 21 [2022-12-13 20:12:57,815 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 20:12:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:12:57,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:12:58,278 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_33| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_33|)) (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_650) |v_thread1Thread1of1ForFork3_~#t3~0.base_33| v_ArrVal_651) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_33| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_33|)) (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork3_~#t2~0.base| v_ArrVal_650) |v_thread1Thread1of1ForFork3_~#t3~0.base_33| v_ArrVal_651) c_~X_0~0.base) .cse0))))))) is different from false [2022-12-13 20:13:00,055 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_42| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_42|)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_33| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_33|)) (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_42| v_ArrVal_650) |v_thread1Thread1of1ForFork3_~#t3~0.base_33| v_ArrVal_651) c_~X_0~0.base) .cse0))))))) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_42| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_42|)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_33| Int)) (or (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_42| v_ArrVal_650) |v_thread1Thread1of1ForFork3_~#t3~0.base_33| v_ArrVal_651) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_33|)))))))) is different from false [2022-12-13 20:13:02,301 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_42| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_42|)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_33| Int)) (or (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_42| v_ArrVal_650) |v_thread1Thread1of1ForFork3_~#t3~0.base_33| v_ArrVal_651) c_~X_0~0.base) .cse0) (+ c_~s_6~0 c_~t_8~0 1))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_33|)))))) (forall ((|v_thread1Thread1of1ForFork3_~#t2~0.base_42| Int)) (or (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t2~0.base_42|)) (forall ((|v_thread1Thread1of1ForFork3_~#t3~0.base_33| Int)) (or (forall ((v_ArrVal_650 (Array Int Int)) (v_ArrVal_651 (Array Int Int))) (<= (+ c_~s_6~0 c_~t_8~0) (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork3_~#t2~0.base_42| v_ArrVal_650) |v_thread1Thread1of1ForFork3_~#t3~0.base_33| v_ArrVal_651) c_~X_0~0.base) .cse0))) (not (< |c_#StackHeapBarrier| |v_thread1Thread1of1ForFork3_~#t3~0.base_33|)))))))) is different from false [2022-12-13 20:13:02,324 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:13:02,324 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 104 treesize of output 72 [2022-12-13 20:13:02,329 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 62 treesize of output 54 [2022-12-13 20:13:02,335 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 28 treesize of output 24 [2022-12-13 20:13:02,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:13:02,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 20:13:02,381 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 20:13:02,381 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 21 treesize of output 11 [2022-12-13 20:13:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-12-13 20:13:02,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702017632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:13:02,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:13:02,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2022-12-13 20:13:02,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471191447] [2022-12-13 20:13:02,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:13:02,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-13 20:13:02,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:13:02,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 20:13:02,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=638, Unknown=21, NotChecked=162, Total=930 [2022-12-13 20:13:02,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 456 [2022-12-13 20:13:02,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 616 transitions, 6017 flow. Second operand has 31 states, 31 states have (on average 172.0) internal successors, (5332), 31 states have internal predecessors, (5332), 0 states have call successors, (0), 0 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 20:13:02,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:13:02,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 456 [2022-12-13 20:13:02,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:13:08,870 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 53 DAG size of output: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:13:17,040 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 51 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:13:23,363 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 57 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 20:14:37,849 INFO L130 PetriNetUnfolder]: 338944/439414 cut-off events. [2022-12-13 20:14:37,849 INFO L131 PetriNetUnfolder]: For 3930325/3931075 co-relation queries the response was YES. [2022-12-13 20:14:41,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2675986 conditions, 439414 events. 338944/439414 cut-off events. For 3930325/3931075 co-relation queries the response was YES. Maximal size of possible extension queue 9354. Compared 2781603 event pairs, 66551 based on Foata normal form. 89/431523 useless extension candidates. Maximal degree in co-relation 2675908. Up to 299948 conditions per place. [2022-12-13 20:14:43,758 INFO L137 encePairwiseOnDemand]: 438/456 looper letters, 1340 selfloop transitions, 468 changer transitions 20/1838 dead transitions. [2022-12-13 20:14:43,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 1838 transitions, 21040 flow [2022-12-13 20:14:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 20:14:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 20:14:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 5242 transitions. [2022-12-13 20:14:43,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42576348278102666 [2022-12-13 20:14:43,765 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 5242 transitions. [2022-12-13 20:14:43,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 5242 transitions. [2022-12-13 20:14:43,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:14:43,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 5242 transitions. [2022-12-13 20:14:43,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 194.14814814814815) internal successors, (5242), 27 states have internal predecessors, (5242), 0 states have call successors, (0), 0 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 20:14:43,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 456.0) internal successors, (12768), 28 states have internal predecessors, (12768), 0 states have call successors, (0), 0 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 20:14:43,781 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 456.0) internal successors, (12768), 28 states have internal predecessors, (12768), 0 states have call successors, (0), 0 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 20:14:43,781 INFO L175 Difference]: Start difference. First operand has 201 places, 616 transitions, 6017 flow. Second operand 27 states and 5242 transitions. [2022-12-13 20:14:43,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 1838 transitions, 21040 flow [2022-12-13 20:23:38,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 1838 transitions, 20634 flow, removed 192 selfloop flow, removed 4 redundant places. [2022-12-13 20:23:38,101 INFO L231 Difference]: Finished difference. Result has 243 places, 1011 transitions, 11935 flow [2022-12-13 20:23:38,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=5762, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=11935, PETRI_PLACES=243, PETRI_TRANSITIONS=1011} [2022-12-13 20:23:38,102 INFO L288 CegarLoopForPetriNet]: 75 programPoint places, 168 predicate places. [2022-12-13 20:23:38,102 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 1011 transitions, 11935 flow [2022-12-13 20:23:38,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 172.0) internal successors, (5332), 31 states have internal predecessors, (5332), 0 states have call successors, (0), 0 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 20:23:38,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:23:38,103 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:23:38,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 20:23:38,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:23:38,305 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 20:23:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:23:38,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1411725127, now seen corresponding path program 2 times [2022-12-13 20:23:38,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:23:38,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023002339] [2022-12-13 20:23:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:23:38,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:23:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:23:39,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:23:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:23:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023002339] [2022-12-13 20:23:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023002339] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:23:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947053348] [2022-12-13 20:23:39,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:23:39,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:23:39,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:23:39,217 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:23:39,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2fa36aa-f63f-42db-8561-13e494b3e922/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 20:23:39,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:23:39,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:23:39,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 82 conjunts are in the unsatisfiable core [2022-12-13 20:23:39,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:23:39,396 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-13 20:23:39,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-13 20:23:39,580 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 20:23:39,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2022-12-13 20:23:39,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:23:39,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-13 20:23:39,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:23:39,857 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 16 treesize of output 18 [2022-12-13 20:23:39,899 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 20:23:39,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-12-13 20:23:40,046 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 16 treesize of output 18 [2022-12-13 20:23:40,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 20:23:40,148 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 16 treesize of output 18 [2022-12-13 20:23:40,198 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 20:23:40,198 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 17 [2022-12-13 20:23:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:23:40,398 INFO L328 TraceCheckSpWp]: Computing backward predicates...