./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R --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 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 --- 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-38b53e6 [2022-11-25 17:44:09,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:44:09,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:44:09,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:44:09,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:44:09,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:44:09,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:44:09,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:44:09,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:44:09,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:44:09,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:44:09,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:44:09,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:44:09,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:44:09,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:44:09,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:44:09,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:44:09,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:44:09,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:44:09,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:44:09,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:44:09,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:44:09,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:44:09,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:44:09,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:44:09,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:44:09,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:44:09,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:44:09,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:44:09,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:44:09,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:44:09,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:44:09,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:44:09,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:44:09,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:44:09,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:44:09,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:44:09,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:44:09,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:44:09,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:44:09,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:44:09,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:44:09,925 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:44:09,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:44:09,925 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:44:09,926 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:44:09,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:44:09,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:44:09,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:44:09,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:44:09,928 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:44:09,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:44:09,928 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:44:09,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:44:09,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:44:09,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:44:09,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:44:09,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:44:09,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:44:09,930 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:44:09,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:44:09,933 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:44:09,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:44:09,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:44:09,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:44:09,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:44:09,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:44:09,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:44:09,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:44:09,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:44:09,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:44:09,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:44:09,937 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:44:09,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:44:09,938 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:44:09,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:44:09,940 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_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf47faf943da19c0d2d15e35f35ceed9dd68ed50ac4355a0589bd57bf3d155 [2022-11-25 17:44:10,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:44:10,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:44:10,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:44:10,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:44:10,261 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:44:10,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-11-25 17:44:13,284 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:44:13,532 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:44:13,533 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2022-11-25 17:44:13,540 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/data/e2e948c78/8d5363e37627431ea3c054da0b857d63/FLAG17e5cf532 [2022-11-25 17:44:13,562 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/data/e2e948c78/8d5363e37627431ea3c054da0b857d63 [2022-11-25 17:44:13,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:44:13,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:44:13,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:44:13,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:44:13,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:44:13,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:13,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1694f018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13, skipping insertion in model container [2022-11-25 17:44:13,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:13,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:44:13,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:44:13,804 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,805 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,821 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,842 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_76c324a6-7be0-414c-95d5-bd5d98517b3b/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-11-25 17:44:13,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:44:13,865 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:44:13,885 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,886 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,888 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,889 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,892 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,893 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:13,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:13,912 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_76c324a6-7be0-414c-95d5-bd5d98517b3b/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-11-25 17:44:13,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:44:13,933 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:44:13,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13 WrapperNode [2022-11-25 17:44:13,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:44:13,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:44:13,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:44:13,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:44:13,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:13,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,000 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-11-25 17:44:14,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:44:14,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:44:14,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:44:14,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:44:14,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:44:14,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:44:14,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:44:14,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:44:14,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (1/1) ... [2022-11-25 17:44:14,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:44:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:14,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:44:14,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:44:14,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:44:14,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:44:14,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:44:14,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:44:14,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:44:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:44:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:44:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:44:14,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:44:14,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:44:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:44:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:44:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:44:14,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:44:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:44:14,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:44:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:44:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:44:14,127 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:44:14,230 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:44:14,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:44:14,566 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:44:14,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:44:14,670 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:44:14,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:14 BoogieIcfgContainer [2022-11-25 17:44:14,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:44:14,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:44:14,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:44:14,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:44:14,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:44:13" (1/3) ... [2022-11-25 17:44:14,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13092ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:14, skipping insertion in model container [2022-11-25 17:44:14,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:13" (2/3) ... [2022-11-25 17:44:14,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13092ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:14, skipping insertion in model container [2022-11-25 17:44:14,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:14" (3/3) ... [2022-11-25 17:44:14,683 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-11-25 17:44:14,692 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:44:14,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:44:14,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:44:14,704 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:44:14,814 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:44:14,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 124 transitions, 280 flow [2022-11-25 17:44:14,931 INFO L130 PetriNetUnfolder]: 9/120 cut-off events. [2022-11-25 17:44:14,932 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:44:14,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 120 events. 9/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-11-25 17:44:14,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 124 transitions, 280 flow [2022-11-25 17:44:14,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 238 flow [2022-11-25 17:44:14,947 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:44:14,963 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 107 transitions, 238 flow [2022-11-25 17:44:14,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 107 transitions, 238 flow [2022-11-25 17:44:14,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 107 transitions, 238 flow [2022-11-25 17:44:15,004 INFO L130 PetriNetUnfolder]: 9/107 cut-off events. [2022-11-25 17:44:15,005 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:44:15,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 107 events. 9/107 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 91 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-11-25 17:44:15,008 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2022-11-25 17:44:18,959 INFO L134 LiptonReduction]: Checked pairs total: 2470 [2022-11-25 17:44:18,960 INFO L136 LiptonReduction]: Total number of compositions: 87 [2022-11-25 17:44:18,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:44:18,983 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;@2aee335b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:44:18,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 17:44:18,992 INFO L130 PetriNetUnfolder]: 4/28 cut-off events. [2022-11-25 17:44:18,992 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:44:18,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:18,993 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] [2022-11-25 17:44:18,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:18,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:18,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1680721800, now seen corresponding path program 1 times [2022-11-25 17:44:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:19,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208949917] [2022-11-25 17:44:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:19,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:19,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208949917] [2022-11-25 17:44:19,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208949917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:19,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:19,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:44:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784678202] [2022-11-25 17:44:19,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:19,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:44:19,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:44:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:44:19,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 211 [2022-11-25 17:44:19,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:19,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:19,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 211 [2022-11-25 17:44:19,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:20,060 INFO L130 PetriNetUnfolder]: 1537/1954 cut-off events. [2022-11-25 17:44:20,060 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2022-11-25 17:44:20,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1954 events. 1537/1954 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6374 event pairs, 141 based on Foata normal form. 1/1139 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2022-11-25 17:44:20,084 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 41 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2022-11-25 17:44:20,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 241 flow [2022-11-25 17:44:20,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:44:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:44:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-11-25 17:44:20,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5687203791469194 [2022-11-25 17:44:20,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-11-25 17:44:20,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-11-25 17:44:20,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:20,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-11-25 17:44:20,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,134 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 360 transitions. [2022-11-25 17:44:20,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 241 flow [2022-11-25 17:44:20,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:44:20,145 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2022-11-25 17:44:20,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2022-11-25 17:44:20,155 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2022-11-25 17:44:20,155 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2022-11-25 17:44:20,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:20,156 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] [2022-11-25 17:44:20,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:44:20,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:20,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 919442590, now seen corresponding path program 1 times [2022-11-25 17:44:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:20,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105979755] [2022-11-25 17:44:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:20,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:20,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:20,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:20,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105979755] [2022-11-25 17:44:20,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105979755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:20,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:20,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:20,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301105192] [2022-11-25 17:44:20,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:20,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:20,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:20,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:20,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:20,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:20,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:20,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:20,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:20,910 INFO L130 PetriNetUnfolder]: 2645/3467 cut-off events. [2022-11-25 17:44:20,911 INFO L131 PetriNetUnfolder]: For 1093/1093 co-relation queries the response was YES. [2022-11-25 17:44:20,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8501 conditions, 3467 events. 2645/3467 cut-off events. For 1093/1093 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15095 event pairs, 598 based on Foata normal form. 62/3527 useless extension candidates. Maximal degree in co-relation 2598. Up to 1576 conditions per place. [2022-11-25 17:44:20,935 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 86 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2022-11-25 17:44:20,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 93 transitions, 461 flow [2022-11-25 17:44:20,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-11-25 17:44:20,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5402843601895735 [2022-11-25 17:44:20,939 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-11-25 17:44:20,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-11-25 17:44:20,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:20,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-11-25 17:44:20,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,946 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,946 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 5 states and 570 transitions. [2022-11-25 17:44:20,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 93 transitions, 461 flow [2022-11-25 17:44:20,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 93 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:20,950 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 129 flow [2022-11-25 17:44:20,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=129, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2022-11-25 17:44:20,951 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2022-11-25 17:44:20,952 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 129 flow [2022-11-25 17:44:20,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:20,953 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:20,953 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] [2022-11-25 17:44:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:44:20,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:20,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1085518763, now seen corresponding path program 1 times [2022-11-25 17:44:20,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:20,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696097665] [2022-11-25 17:44:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:20,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:21,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:21,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696097665] [2022-11-25 17:44:21,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696097665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:44:21,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789944440] [2022-11-25 17:44:21,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:21,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:21,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:21,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:44:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:21,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:44:21,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:21,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:21,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789944440] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:21,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:44:21,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-25 17:44:21,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141295987] [2022-11-25 17:44:21,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:21,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:44:21,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:21,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:44:21,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:44:21,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2022-11-25 17:44:21,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 129 flow. Second operand has 8 states, 8 states have (on average 99.75) internal successors, (798), 8 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:21,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:21,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2022-11-25 17:44:21,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:22,055 INFO L130 PetriNetUnfolder]: 3569/4785 cut-off events. [2022-11-25 17:44:22,055 INFO L131 PetriNetUnfolder]: For 3522/3936 co-relation queries the response was YES. [2022-11-25 17:44:22,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12910 conditions, 4785 events. 3569/4785 cut-off events. For 3522/3936 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 21848 event pairs, 436 based on Foata normal form. 524/5268 useless extension candidates. Maximal degree in co-relation 8290. Up to 1988 conditions per place. [2022-11-25 17:44:22,090 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 87 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2022-11-25 17:44:22,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 95 transitions, 523 flow [2022-11-25 17:44:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:22,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 558 transitions. [2022-11-25 17:44:22,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5289099526066351 [2022-11-25 17:44:22,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 558 transitions. [2022-11-25 17:44:22,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 558 transitions. [2022-11-25 17:44:22,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:22,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 558 transitions. [2022-11-25 17:44:22,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:22,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:22,098 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:22,098 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 129 flow. Second operand 5 states and 558 transitions. [2022-11-25 17:44:22,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 95 transitions, 523 flow [2022-11-25 17:44:22,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 95 transitions, 504 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:22,104 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 159 flow [2022-11-25 17:44:22,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-11-25 17:44:22,105 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2022-11-25 17:44:22,105 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 159 flow [2022-11-25 17:44:22,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.75) internal successors, (798), 8 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:22,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:22,106 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:22,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:44:22,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:22,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:22,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:22,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1882757935, now seen corresponding path program 1 times [2022-11-25 17:44:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:22,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736303137] [2022-11-25 17:44:22,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:22,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736303137] [2022-11-25 17:44:22,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736303137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:44:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831462919] [2022-11-25 17:44:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:22,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:22,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:22,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:44:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:22,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:44:22,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:22,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:22,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831462919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:22,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:44:22,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-11-25 17:44:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64035163] [2022-11-25 17:44:22,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:44:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:22,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:44:22,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:44:22,679 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2022-11-25 17:44:22,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 159 flow. Second operand has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:22,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:22,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2022-11-25 17:44:22,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:23,431 INFO L130 PetriNetUnfolder]: 3941/5253 cut-off events. [2022-11-25 17:44:23,432 INFO L131 PetriNetUnfolder]: For 6577/6850 co-relation queries the response was YES. [2022-11-25 17:44:23,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16251 conditions, 5253 events. 3941/5253 cut-off events. For 6577/6850 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 23285 event pairs, 865 based on Foata normal form. 365/5570 useless extension candidates. Maximal degree in co-relation 10475. Up to 2302 conditions per place. [2022-11-25 17:44:23,474 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 90 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2022-11-25 17:44:23,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 100 transitions, 596 flow [2022-11-25 17:44:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:23,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2022-11-25 17:44:23,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5308056872037915 [2022-11-25 17:44:23,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2022-11-25 17:44:23,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2022-11-25 17:44:23,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:23,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2022-11-25 17:44:23,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:23,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:23,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:23,483 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 159 flow. Second operand 5 states and 560 transitions. [2022-11-25 17:44:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 100 transitions, 596 flow [2022-11-25 17:44:23,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 587 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:23,500 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 212 flow [2022-11-25 17:44:23,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2022-11-25 17:44:23,502 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2022-11-25 17:44:23,502 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 212 flow [2022-11-25 17:44:23,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 100.0) internal successors, (800), 8 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:23,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:23,503 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] [2022-11-25 17:44:23,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:23,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:23,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash 876661937, now seen corresponding path program 2 times [2022-11-25 17:44:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:23,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092246077] [2022-11-25 17:44:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:23,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:23,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092246077] [2022-11-25 17:44:23,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092246077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:23,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:23,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818064502] [2022-11-25 17:44:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:23,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:23,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:23,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:23,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:23,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:23,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:23,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:23,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:24,776 INFO L130 PetriNetUnfolder]: 5836/7863 cut-off events. [2022-11-25 17:44:24,777 INFO L131 PetriNetUnfolder]: For 14970/15543 co-relation queries the response was YES. [2022-11-25 17:44:24,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 7863 events. 5836/7863 cut-off events. For 14970/15543 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 38211 event pairs, 1525 based on Foata normal form. 631/8438 useless extension candidates. Maximal degree in co-relation 15921. Up to 3919 conditions per place. [2022-11-25 17:44:24,948 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 95 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2022-11-25 17:44:24,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 109 transitions, 703 flow [2022-11-25 17:44:24,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:24,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 568 transitions. [2022-11-25 17:44:24,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5383886255924171 [2022-11-25 17:44:24,951 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 568 transitions. [2022-11-25 17:44:24,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 568 transitions. [2022-11-25 17:44:24,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:24,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 568 transitions. [2022-11-25 17:44:24,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:24,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:24,957 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:24,957 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 212 flow. Second operand 5 states and 568 transitions. [2022-11-25 17:44:24,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 109 transitions, 703 flow [2022-11-25 17:44:24,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 691 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:24,989 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 269 flow [2022-11-25 17:44:24,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2022-11-25 17:44:24,992 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2022-11-25 17:44:24,992 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 269 flow [2022-11-25 17:44:24,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:24,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:24,993 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] [2022-11-25 17:44:24,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:44:24,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash 512904252, now seen corresponding path program 2 times [2022-11-25 17:44:24,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:24,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599176325] [2022-11-25 17:44:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:24,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:25,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599176325] [2022-11-25 17:44:25,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599176325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:25,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:25,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:25,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423508195] [2022-11-25 17:44:25,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:25,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:25,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:25,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:25,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:25,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:25,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:25,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:26,212 INFO L130 PetriNetUnfolder]: 5509/7659 cut-off events. [2022-11-25 17:44:26,213 INFO L131 PetriNetUnfolder]: For 26300/27791 co-relation queries the response was YES. [2022-11-25 17:44:26,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28515 conditions, 7659 events. 5509/7659 cut-off events. For 26300/27791 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 39741 event pairs, 1639 based on Foata normal form. 1581/9113 useless extension candidates. Maximal degree in co-relation 21586. Up to 4091 conditions per place. [2022-11-25 17:44:26,265 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 108 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2022-11-25 17:44:26,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 120 transitions, 881 flow [2022-11-25 17:44:26,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 568 transitions. [2022-11-25 17:44:26,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5383886255924171 [2022-11-25 17:44:26,268 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 568 transitions. [2022-11-25 17:44:26,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 568 transitions. [2022-11-25 17:44:26,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:26,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 568 transitions. [2022-11-25 17:44:26,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:26,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:26,273 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:26,273 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 269 flow. Second operand 5 states and 568 transitions. [2022-11-25 17:44:26,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 120 transitions, 881 flow [2022-11-25 17:44:26,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 120 transitions, 815 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:26,365 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 294 flow [2022-11-25 17:44:26,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2022-11-25 17:44:26,368 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2022-11-25 17:44:26,368 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 294 flow [2022-11-25 17:44:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:26,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:26,369 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] [2022-11-25 17:44:26,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:44:26,369 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:26,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:26,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1777299861, now seen corresponding path program 1 times [2022-11-25 17:44:26,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:26,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135924438] [2022-11-25 17:44:26,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:26,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:26,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135924438] [2022-11-25 17:44:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135924438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:26,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:26,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:26,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703387875] [2022-11-25 17:44:26,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:26,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:26,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:26,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:26,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:26,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:26,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:27,907 INFO L130 PetriNetUnfolder]: 6552/9327 cut-off events. [2022-11-25 17:44:27,907 INFO L131 PetriNetUnfolder]: For 28073/28901 co-relation queries the response was YES. [2022-11-25 17:44:27,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34520 conditions, 9327 events. 6552/9327 cut-off events. For 28073/28901 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 53114 event pairs, 1600 based on Foata normal form. 1003/10094 useless extension candidates. Maximal degree in co-relation 22767. Up to 4326 conditions per place. [2022-11-25 17:44:27,975 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 111 selfloop transitions, 5 changer transitions 1/123 dead transitions. [2022-11-25 17:44:27,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 123 transitions, 923 flow [2022-11-25 17:44:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 572 transitions. [2022-11-25 17:44:27,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5421800947867299 [2022-11-25 17:44:27,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 572 transitions. [2022-11-25 17:44:27,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 572 transitions. [2022-11-25 17:44:27,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:27,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 572 transitions. [2022-11-25 17:44:27,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:27,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:27,983 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:27,983 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 294 flow. Second operand 5 states and 572 transitions. [2022-11-25 17:44:27,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 123 transitions, 923 flow [2022-11-25 17:44:28,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 123 transitions, 887 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:28,024 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 313 flow [2022-11-25 17:44:28,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2022-11-25 17:44:28,026 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2022-11-25 17:44:28,026 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 313 flow [2022-11-25 17:44:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:28,027 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:28,027 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] [2022-11-25 17:44:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:44:28,027 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:28,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1446967085, now seen corresponding path program 3 times [2022-11-25 17:44:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:28,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357380596] [2022-11-25 17:44:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:28,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:28,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357380596] [2022-11-25 17:44:28,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357380596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:28,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:28,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978713500] [2022-11-25 17:44:28,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:28,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:28,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2022-11-25 17:44:28,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 313 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:28,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:28,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2022-11-25 17:44:28,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:29,638 INFO L130 PetriNetUnfolder]: 7974/11378 cut-off events. [2022-11-25 17:44:29,639 INFO L131 PetriNetUnfolder]: For 37347/38149 co-relation queries the response was YES. [2022-11-25 17:44:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42636 conditions, 11378 events. 7974/11378 cut-off events. For 37347/38149 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 65865 event pairs, 2291 based on Foata normal form. 1019/12186 useless extension candidates. Maximal degree in co-relation 28892. Up to 4536 conditions per place. [2022-11-25 17:44:29,728 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 92 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2022-11-25 17:44:29,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 116 transitions, 881 flow [2022-11-25 17:44:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2022-11-25 17:44:29,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5345971563981042 [2022-11-25 17:44:29,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2022-11-25 17:44:29,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2022-11-25 17:44:29,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:29,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2022-11-25 17:44:29,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,735 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 313 flow. Second operand 5 states and 564 transitions. [2022-11-25 17:44:29,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 116 transitions, 881 flow [2022-11-25 17:44:29,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 116 transitions, 855 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:29,796 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 446 flow [2022-11-25 17:44:29,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2022-11-25 17:44:29,797 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2022-11-25 17:44:29,797 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 446 flow [2022-11-25 17:44:29,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:29,798 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] [2022-11-25 17:44:29,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:44:29,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 502290235, now seen corresponding path program 2 times [2022-11-25 17:44:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:29,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621653602] [2022-11-25 17:44:29,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:29,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:29,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:29,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621653602] [2022-11-25 17:44:29,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621653602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:29,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:29,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:29,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442973046] [2022-11-25 17:44:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:29,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:29,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:29,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:29,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 446 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:29,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:31,398 INFO L130 PetriNetUnfolder]: 8479/12084 cut-off events. [2022-11-25 17:44:31,398 INFO L131 PetriNetUnfolder]: For 50751/51761 co-relation queries the response was YES. [2022-11-25 17:44:31,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50336 conditions, 12084 events. 8479/12084 cut-off events. For 50751/51761 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 70737 event pairs, 1520 based on Foata normal form. 949/12740 useless extension candidates. Maximal degree in co-relation 35930. Up to 7078 conditions per place. [2022-11-25 17:44:31,491 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 91 selfloop transitions, 15 changer transitions 0/113 dead transitions. [2022-11-25 17:44:31,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 113 transitions, 933 flow [2022-11-25 17:44:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:31,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2022-11-25 17:44:31,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5327014218009478 [2022-11-25 17:44:31,494 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2022-11-25 17:44:31,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2022-11-25 17:44:31,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:31,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2022-11-25 17:44:31,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,498 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,499 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 446 flow. Second operand 5 states and 562 transitions. [2022-11-25 17:44:31,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 113 transitions, 933 flow [2022-11-25 17:44:31,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 113 transitions, 914 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:31,608 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 485 flow [2022-11-25 17:44:31,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=485, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2022-11-25 17:44:31,609 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 37 predicate places. [2022-11-25 17:44:31,610 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 485 flow [2022-11-25 17:44:31,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:31,610 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] [2022-11-25 17:44:31,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:44:31,611 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:31,611 INFO L85 PathProgramCache]: Analyzing trace with hash -416550198, now seen corresponding path program 3 times [2022-11-25 17:44:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:31,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630797065] [2022-11-25 17:44:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:31,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:31,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630797065] [2022-11-25 17:44:31,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630797065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:31,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:31,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320446583] [2022-11-25 17:44:31,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:31,729 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2022-11-25 17:44:31,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:31,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2022-11-25 17:44:31,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:33,430 INFO L130 PetriNetUnfolder]: 9812/14175 cut-off events. [2022-11-25 17:44:33,430 INFO L131 PetriNetUnfolder]: For 87038/91294 co-relation queries the response was YES. [2022-11-25 17:44:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60190 conditions, 14175 events. 9812/14175 cut-off events. For 87038/91294 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 86309 event pairs, 2653 based on Foata normal form. 2190/15981 useless extension candidates. Maximal degree in co-relation 45360. Up to 5228 conditions per place. [2022-11-25 17:44:33,530 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 126 selfloop transitions, 16 changer transitions 2/152 dead transitions. [2022-11-25 17:44:33,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 152 transitions, 1434 flow [2022-11-25 17:44:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:33,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 568 transitions. [2022-11-25 17:44:33,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5383886255924171 [2022-11-25 17:44:33,533 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 568 transitions. [2022-11-25 17:44:33,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 568 transitions. [2022-11-25 17:44:33,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:33,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 568 transitions. [2022-11-25 17:44:33,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:33,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:33,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:33,538 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 485 flow. Second operand 5 states and 568 transitions. [2022-11-25 17:44:33,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 152 transitions, 1434 flow [2022-11-25 17:44:33,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 152 transitions, 1403 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:33,668 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 605 flow [2022-11-25 17:44:33,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=605, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2022-11-25 17:44:33,670 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2022-11-25 17:44:33,670 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 605 flow [2022-11-25 17:44:33,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:33,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:33,670 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:33,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:44:33,671 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:33,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1650426233, now seen corresponding path program 2 times [2022-11-25 17:44:33,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:33,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416526545] [2022-11-25 17:44:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:33,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:33,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:33,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416526545] [2022-11-25 17:44:33,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416526545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:33,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:33,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:33,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305340703] [2022-11-25 17:44:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:33,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:33,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:33,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:33,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2022-11-25 17:44:33,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:33,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:33,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2022-11-25 17:44:33,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:36,147 INFO L130 PetriNetUnfolder]: 12658/18691 cut-off events. [2022-11-25 17:44:36,148 INFO L131 PetriNetUnfolder]: For 118167/120401 co-relation queries the response was YES. [2022-11-25 17:44:36,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86805 conditions, 18691 events. 12658/18691 cut-off events. For 118167/120401 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 122347 event pairs, 2963 based on Foata normal form. 2059/20123 useless extension candidates. Maximal degree in co-relation 60598. Up to 7614 conditions per place. [2022-11-25 17:44:36,273 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 136 selfloop transitions, 23 changer transitions 0/170 dead transitions. [2022-11-25 17:44:36,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 170 transitions, 1725 flow [2022-11-25 17:44:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:36,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 568 transitions. [2022-11-25 17:44:36,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5383886255924171 [2022-11-25 17:44:36,276 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 568 transitions. [2022-11-25 17:44:36,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 568 transitions. [2022-11-25 17:44:36,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:36,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 568 transitions. [2022-11-25 17:44:36,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:36,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:36,280 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:36,281 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 605 flow. Second operand 5 states and 568 transitions. [2022-11-25 17:44:36,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 170 transitions, 1725 flow [2022-11-25 17:44:36,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 170 transitions, 1687 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:36,615 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 884 flow [2022-11-25 17:44:36,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=884, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2022-11-25 17:44:36,615 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 48 predicate places. [2022-11-25 17:44:36,616 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 884 flow [2022-11-25 17:44:36,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:36,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:36,616 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] [2022-11-25 17:44:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:44:36,617 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1889307013, now seen corresponding path program 4 times [2022-11-25 17:44:36,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414369872] [2022-11-25 17:44:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:36,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:36,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414369872] [2022-11-25 17:44:36,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414369872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:44:36,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547682328] [2022-11-25 17:44:36,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:44:36,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:36,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:36,707 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:36,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:44:36,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:44:36,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:44:36,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:44:36,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:36,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:36,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547682328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:36,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:44:36,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 17:44:36,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388577816] [2022-11-25 17:44:36,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:36,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:44:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:36,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:44:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:44:36,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2022-11-25 17:44:36,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 884 flow. Second operand has 10 states, 10 states have (on average 99.5) internal successors, (995), 10 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:36,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:36,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2022-11-25 17:44:36,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:39,835 INFO L130 PetriNetUnfolder]: 14881/21843 cut-off events. [2022-11-25 17:44:39,835 INFO L131 PetriNetUnfolder]: For 162482/164777 co-relation queries the response was YES. [2022-11-25 17:44:39,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107448 conditions, 21843 events. 14881/21843 cut-off events. For 162482/164777 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 144128 event pairs, 2290 based on Foata normal form. 2043/23484 useless extension candidates. Maximal degree in co-relation 75801. Up to 8724 conditions per place. [2022-11-25 17:44:40,019 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 207 selfloop transitions, 30 changer transitions 0/247 dead transitions. [2022-11-25 17:44:40,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 247 transitions, 2637 flow [2022-11-25 17:44:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:44:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:44:40,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 897 transitions. [2022-11-25 17:44:40,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5313981042654028 [2022-11-25 17:44:40,022 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 897 transitions. [2022-11-25 17:44:40,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 897 transitions. [2022-11-25 17:44:40,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:40,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 897 transitions. [2022-11-25 17:44:40,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 211.0) internal successors, (1899), 9 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:40,028 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 211.0) internal successors, (1899), 9 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:40,028 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 884 flow. Second operand 8 states and 897 transitions. [2022-11-25 17:44:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 247 transitions, 2637 flow [2022-11-25 17:44:40,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 247 transitions, 2622 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:40,384 INFO L231 Difference]: Finished difference. Result has 96 places, 100 transitions, 1189 flow [2022-11-25 17:44:40,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1189, PETRI_PLACES=96, PETRI_TRANSITIONS=100} [2022-11-25 17:44:40,385 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 58 predicate places. [2022-11-25 17:44:40,385 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 100 transitions, 1189 flow [2022-11-25 17:44:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.5) internal successors, (995), 10 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:40,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:40,386 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] [2022-11-25 17:44:40,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:40,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c324a6-7be0-414c-95d5-bd5d98517b3b/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:44:40,591 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 970415345, now seen corresponding path program 3 times [2022-11-25 17:44:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:40,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142449511] [2022-11-25 17:44:40,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:40,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:40,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:40,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:40,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142449511] [2022-11-25 17:44:40,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142449511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:40,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:40,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:40,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072358816] [2022-11-25 17:44:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:40,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:40,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:40,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:40,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:40,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 100 transitions, 1189 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:40,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:40,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:40,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:43,745 INFO L130 PetriNetUnfolder]: 16298/23973 cut-off events. [2022-11-25 17:44:43,745 INFO L131 PetriNetUnfolder]: For 201791/203328 co-relation queries the response was YES. [2022-11-25 17:44:43,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125472 conditions, 23973 events. 16298/23973 cut-off events. For 201791/203328 co-relation queries the response was YES. Maximal size of possible extension queue 1257. Compared 158503 event pairs, 2644 based on Foata normal form. 1405/25111 useless extension candidates. Maximal degree in co-relation 105256. Up to 14175 conditions per place. [2022-11-25 17:44:43,903 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 156 selfloop transitions, 27 changer transitions 7/197 dead transitions. [2022-11-25 17:44:43,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 197 transitions, 2440 flow [2022-11-25 17:44:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 566 transitions. [2022-11-25 17:44:43,905 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5364928909952607 [2022-11-25 17:44:43,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 566 transitions. [2022-11-25 17:44:43,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 566 transitions. [2022-11-25 17:44:43,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:43,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 566 transitions. [2022-11-25 17:44:43,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:43,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:43,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:43,915 INFO L175 Difference]: Start difference. First operand has 96 places, 100 transitions, 1189 flow. Second operand 5 states and 566 transitions. [2022-11-25 17:44:43,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 197 transitions, 2440 flow [2022-11-25 17:44:44,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 197 transitions, 2381 flow, removed 14 selfloop flow, removed 3 redundant places. [2022-11-25 17:44:44,817 INFO L231 Difference]: Finished difference. Result has 99 places, 104 transitions, 1271 flow [2022-11-25 17:44:44,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1271, PETRI_PLACES=99, PETRI_TRANSITIONS=104} [2022-11-25 17:44:44,818 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2022-11-25 17:44:44,818 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 104 transitions, 1271 flow [2022-11-25 17:44:44,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:44,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:44,819 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] [2022-11-25 17:44:44,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:44:44,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:44,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:44,820 INFO L85 PathProgramCache]: Analyzing trace with hash 10250562, now seen corresponding path program 4 times [2022-11-25 17:44:44,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:44,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755280543] [2022-11-25 17:44:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:44,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:44,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:44,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755280543] [2022-11-25 17:44:44,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755280543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:44,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:44,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:44,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410548193] [2022-11-25 17:44:44,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:44,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:44,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:44,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:44,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2022-11-25 17:44:44,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 104 transitions, 1271 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:44,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:44,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2022-11-25 17:44:44,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:48,946 INFO L130 PetriNetUnfolder]: 21560/31241 cut-off events. [2022-11-25 17:44:48,946 INFO L131 PetriNetUnfolder]: For 337069/340983 co-relation queries the response was YES. [2022-11-25 17:44:49,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168473 conditions, 31241 events. 21560/31241 cut-off events. For 337069/340983 co-relation queries the response was YES. Maximal size of possible extension queue 1759. Compared 211221 event pairs, 4865 based on Foata normal form. 4196/34892 useless extension candidates. Maximal degree in co-relation 143514. Up to 13116 conditions per place. [2022-11-25 17:44:49,164 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 249 selfloop transitions, 43 changer transitions 4/308 dead transitions. [2022-11-25 17:44:49,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 308 transitions, 4362 flow [2022-11-25 17:44:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:44:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:44:49,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 669 transitions. [2022-11-25 17:44:49,167 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5284360189573459 [2022-11-25 17:44:49,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 669 transitions. [2022-11-25 17:44:49,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 669 transitions. [2022-11-25 17:44:49,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:49,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 669 transitions. [2022-11-25 17:44:49,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:49,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:49,173 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:49,173 INFO L175 Difference]: Start difference. First operand has 99 places, 104 transitions, 1271 flow. Second operand 6 states and 669 transitions. [2022-11-25 17:44:49,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 308 transitions, 4362 flow [2022-11-25 17:44:50,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 308 transitions, 4269 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:50,181 INFO L231 Difference]: Finished difference. Result has 105 places, 134 transitions, 1834 flow [2022-11-25 17:44:50,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1834, PETRI_PLACES=105, PETRI_TRANSITIONS=134} [2022-11-25 17:44:50,182 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 67 predicate places. [2022-11-25 17:44:50,182 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 134 transitions, 1834 flow [2022-11-25 17:44:50,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:50,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:50,183 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] [2022-11-25 17:44:50,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:44:50,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:50,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1753548518, now seen corresponding path program 5 times [2022-11-25 17:44:50,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:50,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746002593] [2022-11-25 17:44:50,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:50,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:50,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746002593] [2022-11-25 17:44:50,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746002593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:50,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:50,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:50,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325924153] [2022-11-25 17:44:50,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:50,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:50,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:50,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 134 transitions, 1834 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:50,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:50,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:50,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:55,011 INFO L130 PetriNetUnfolder]: 23637/35216 cut-off events. [2022-11-25 17:44:55,012 INFO L131 PetriNetUnfolder]: For 390227/392563 co-relation queries the response was YES. [2022-11-25 17:44:55,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206193 conditions, 35216 events. 23637/35216 cut-off events. For 390227/392563 co-relation queries the response was YES. Maximal size of possible extension queue 1939. Compared 253362 event pairs, 5125 based on Foata normal form. 1959/36732 useless extension candidates. Maximal degree in co-relation 177947. Up to 13077 conditions per place. [2022-11-25 17:44:55,529 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 222 selfloop transitions, 30 changer transitions 12/277 dead transitions. [2022-11-25 17:44:55,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 277 transitions, 3972 flow [2022-11-25 17:44:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:55,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:55,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 566 transitions. [2022-11-25 17:44:55,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5364928909952607 [2022-11-25 17:44:55,532 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 566 transitions. [2022-11-25 17:44:55,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 566 transitions. [2022-11-25 17:44:55,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:55,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 566 transitions. [2022-11-25 17:44:55,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:55,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:55,538 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:55,538 INFO L175 Difference]: Start difference. First operand has 105 places, 134 transitions, 1834 flow. Second operand 5 states and 566 transitions. [2022-11-25 17:44:55,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 277 transitions, 3972 flow [2022-11-25 17:44:57,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 277 transitions, 3910 flow, removed 31 selfloop flow, removed 0 redundant places. [2022-11-25 17:44:57,210 INFO L231 Difference]: Finished difference. Result has 111 places, 139 transitions, 1987 flow [2022-11-25 17:44:57,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1987, PETRI_PLACES=111, PETRI_TRANSITIONS=139} [2022-11-25 17:44:57,210 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 73 predicate places. [2022-11-25 17:44:57,211 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 139 transitions, 1987 flow [2022-11-25 17:44:57,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:57,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:57,211 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] [2022-11-25 17:44:57,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:44:57,212 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:44:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1568637001, now seen corresponding path program 4 times [2022-11-25 17:44:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:57,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297676194] [2022-11-25 17:44:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:57,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:57,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297676194] [2022-11-25 17:44:57,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297676194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:57,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:57,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:44:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15328747] [2022-11-25 17:44:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:57,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:44:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:44:57,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:44:57,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:44:57,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 139 transitions, 1987 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:57,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:57,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:44:57,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:02,665 INFO L130 PetriNetUnfolder]: 24830/37502 cut-off events. [2022-11-25 17:45:02,665 INFO L131 PetriNetUnfolder]: For 449548/452206 co-relation queries the response was YES. [2022-11-25 17:45:02,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221254 conditions, 37502 events. 24830/37502 cut-off events. For 449548/452206 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 277830 event pairs, 6144 based on Foata normal form. 2591/39304 useless extension candidates. Maximal degree in co-relation 193204. Up to 14426 conditions per place. [2022-11-25 17:45:02,956 INFO L137 encePairwiseOnDemand]: 206/211 looper letters, 188 selfloop transitions, 40 changer transitions 5/250 dead transitions. [2022-11-25 17:45:02,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 250 transitions, 3571 flow [2022-11-25 17:45:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:45:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:45:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-11-25 17:45:02,959 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5402843601895735 [2022-11-25 17:45:02,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-11-25 17:45:02,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-11-25 17:45:02,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:02,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-11-25 17:45:02,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:02,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:02,964 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:02,964 INFO L175 Difference]: Start difference. First operand has 111 places, 139 transitions, 1987 flow. Second operand 5 states and 570 transitions. [2022-11-25 17:45:02,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 250 transitions, 3571 flow [2022-11-25 17:45:04,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 250 transitions, 3498 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-25 17:45:04,645 INFO L231 Difference]: Finished difference. Result has 115 places, 141 transitions, 2060 flow [2022-11-25 17:45:04,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2060, PETRI_PLACES=115, PETRI_TRANSITIONS=141} [2022-11-25 17:45:04,646 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 77 predicate places. [2022-11-25 17:45:04,646 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 141 transitions, 2060 flow [2022-11-25 17:45:04,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:04,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:04,647 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] [2022-11-25 17:45:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:45:04,647 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:45:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -788322494, now seen corresponding path program 6 times [2022-11-25 17:45:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:04,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73188868] [2022-11-25 17:45:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:04,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73188868] [2022-11-25 17:45:04,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73188868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:04,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:04,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398576872] [2022-11-25 17:45:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:04,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2022-11-25 17:45:04,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 2060 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:04,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:04,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2022-11-25 17:45:04,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:45:10,219 INFO L130 PetriNetUnfolder]: 23745/36056 cut-off events. [2022-11-25 17:45:10,219 INFO L131 PetriNetUnfolder]: For 471745/476479 co-relation queries the response was YES. [2022-11-25 17:45:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211302 conditions, 36056 events. 23745/36056 cut-off events. For 471745/476479 co-relation queries the response was YES. Maximal size of possible extension queue 2155. Compared 269181 event pairs, 5683 based on Foata normal form. 3311/38681 useless extension candidates. Maximal degree in co-relation 186346. Up to 13647 conditions per place. [2022-11-25 17:45:10,476 INFO L137 encePairwiseOnDemand]: 205/211 looper letters, 249 selfloop transitions, 54 changer transitions 8/330 dead transitions. [2022-11-25 17:45:10,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 330 transitions, 5287 flow [2022-11-25 17:45:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:45:10,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:45:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2022-11-25 17:45:10,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5268562401263823 [2022-11-25 17:45:10,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2022-11-25 17:45:10,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2022-11-25 17:45:10,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:45:10,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2022-11-25 17:45:10,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:10,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:10,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:10,486 INFO L175 Difference]: Start difference. First operand has 115 places, 141 transitions, 2060 flow. Second operand 6 states and 667 transitions. [2022-11-25 17:45:10,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 330 transitions, 5287 flow [2022-11-25 17:45:11,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 330 transitions, 5122 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-25 17:45:11,917 INFO L231 Difference]: Finished difference. Result has 122 places, 167 transitions, 2550 flow [2022-11-25 17:45:11,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2550, PETRI_PLACES=122, PETRI_TRANSITIONS=167} [2022-11-25 17:45:11,917 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2022-11-25 17:45:11,918 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 167 transitions, 2550 flow [2022-11-25 17:45:11,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:11,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:45:11,918 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] [2022-11-25 17:45:11,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:45:11,919 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:45:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -495249962, now seen corresponding path program 7 times [2022-11-25 17:45:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:11,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095140174] [2022-11-25 17:45:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:45:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095140174] [2022-11-25 17:45:11,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095140174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:45:11,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:45:11,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:45:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170520364] [2022-11-25 17:45:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:45:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:45:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:45:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:45:12,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 211 [2022-11-25 17:45:12,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 167 transitions, 2550 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:45:12,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:45:12,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 211 [2022-11-25 17:45:12,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand