./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2e6a14a531a7a58347cefef713565bcea13a3839848e23eb785379c30b602107 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:28:35,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:28:35,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:28:35,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:28:35,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:28:35,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:28:35,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:28:35,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:28:35,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:28:35,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:28:35,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:28:35,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:28:35,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:28:35,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:28:35,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:28:35,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:28:35,486 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:28:35,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:28:35,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:28:35,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:28:35,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:28:35,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:28:35,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:28:35,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:28:35,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:28:35,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:28:35,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:28:35,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:28:35,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:28:35,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:28:35,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:28:35,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:28:35,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:28:35,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:28:35,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:28:35,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:28:35,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:28:35,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:28:35,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:28:35,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:28:35,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:28:35,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:28:35,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:28:35,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:28:35,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:28:35,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:28:35,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:28:35,517 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:28:35,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:28:35,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:28:35,518 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:28:35,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:28:35,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:28:35,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:28:35,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:28:35,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:28:35,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:28:35,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:28:35,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:28:35,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:28:35,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:28:35,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:28:35,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:28:35,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:28:35,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:28:35,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:28:35,521 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:28:35,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:28:35,521 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:28:35,521 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:28:35,521 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:28:35,521 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_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e6a14a531a7a58347cefef713565bcea13a3839848e23eb785379c30b602107 [2022-12-13 17:28:35,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:28:35,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:28:35,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:28:35,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:28:35,742 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:28:35,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2022-12-13 17:28:38,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:28:38,517 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:28:38,518 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2022-12-13 17:28:38,524 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/data/38c691296/2f209ab4d6ef47799303730d2dc9ee91/FLAG6d97e86c7 [2022-12-13 17:28:38,538 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/data/38c691296/2f209ab4d6ef47799303730d2dc9ee91 [2022-12-13 17:28:38,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:28:38,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:28:38,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:28:38,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:28:38,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:28:38,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb22782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38, skipping insertion in model container [2022-12-13 17:28:38,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:28:38,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:28:38,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,719 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,726 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,728 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,736 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_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2612,2625] [2022-12-13 17:28:38,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:28:38,751 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:28:38,764 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,765 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,766 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,767 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,768 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,769 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:28:38,770 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:28:38,775 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_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2612,2625] [2022-12-13 17:28:38,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:28:38,791 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:28:38,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38 WrapperNode [2022-12-13 17:28:38,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:28:38,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:28:38,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:28:38,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:28:38,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,829 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2022-12-13 17:28:38,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:28:38,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:28:38,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:28:38,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:28:38,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,849 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:28:38,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:28:38,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:28:38,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:28:38,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (1/1) ... [2022-12-13 17:28:38,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:28:38,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:38,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:28:38,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:28:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:28:38,914 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:28:38,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:28:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:28:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:28:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 17:28:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 17:28:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 17:28:38,915 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 17:28:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:28:38,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:28:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:28:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:28:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:28:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:28:38,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:28:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:28:38,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:28:38,918 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 17:28:38,994 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:28:38,996 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:28:39,201 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:28:39,245 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:28:39,246 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 17:28:39,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:28:39 BoogieIcfgContainer [2022-12-13 17:28:39,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:28:39,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:28:39,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:28:39,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:28:39,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:28:38" (1/3) ... [2022-12-13 17:28:39,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a37b57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:28:39, skipping insertion in model container [2022-12-13 17:28:39,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:28:38" (2/3) ... [2022-12-13 17:28:39,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a37b57d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:28:39, skipping insertion in model container [2022-12-13 17:28:39,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:28:39" (3/3) ... [2022-12-13 17:28:39,258 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2022-12-13 17:28:39,267 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:28:39,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:28:39,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:28:39,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:28:39,358 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 17:28:39,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 133 transitions, 298 flow [2022-12-13 17:28:39,453 INFO L130 PetriNetUnfolder]: 10/129 cut-off events. [2022-12-13 17:28:39,453 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 17:28:39,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 129 events. 10/129 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 98 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 17:28:39,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 133 transitions, 298 flow [2022-12-13 17:28:39,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 116 transitions, 256 flow [2022-12-13 17:28:39,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:28:39,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 116 transitions, 256 flow [2022-12-13 17:28:39,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 116 transitions, 256 flow [2022-12-13 17:28:39,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 256 flow [2022-12-13 17:28:39,514 INFO L130 PetriNetUnfolder]: 10/116 cut-off events. [2022-12-13 17:28:39,514 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 17:28:39,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 116 events. 10/116 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 17:28:39,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2022-12-13 17:28:42,427 INFO L134 LiptonReduction]: Checked pairs total: 2628 [2022-12-13 17:28:42,427 INFO L136 LiptonReduction]: Total number of compositions: 103 [2022-12-13 17:28:42,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:28:42,441 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;@3a1ed968, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:28:42,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 17:28:42,446 INFO L130 PetriNetUnfolder]: 4/28 cut-off events. [2022-12-13 17:28:42,446 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 17:28:42,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:42,447 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] [2022-12-13 17:28:42,447 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)] === [2022-12-13 17:28:42,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1435074230, now seen corresponding path program 1 times [2022-12-13 17:28:42,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:42,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856640634] [2022-12-13 17:28:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:42,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:42,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:42,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856640634] [2022-12-13 17:28:42,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856640634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:42,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:42,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:28:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53608589] [2022-12-13 17:28:42,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:42,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:42,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:42,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:28:42,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 236 [2022-12-13 17:28:42,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 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) [2022-12-13 17:28:42,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:42,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 236 [2022-12-13 17:28:42,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:43,037 INFO L130 PetriNetUnfolder]: 1343/1736 cut-off events. [2022-12-13 17:28:43,037 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-12-13 17:28:43,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3612 conditions, 1736 events. 1343/1736 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5896 event pairs, 215 based on Foata normal form. 1/1049 useless extension candidates. Maximal degree in co-relation 2691. Up to 1515 conditions per place. [2022-12-13 17:28:43,051 INFO L137 encePairwiseOnDemand]: 230/236 looper letters, 39 selfloop transitions, 3 changer transitions 3/49 dead transitions. [2022-12-13 17:28:43,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 233 flow [2022-12-13 17:28:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:43,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:28:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-13 17:28:43,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5466101694915254 [2022-12-13 17:28:43,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-12-13 17:28:43,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-12-13 17:28:43,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:43,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-12-13 17:28:43,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,071 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,072 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 387 transitions. [2022-12-13 17:28:43,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 233 flow [2022-12-13 17:28:43,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 17:28:43,077 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 89 flow [2022-12-13 17:28:43,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, 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=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2022-12-13 17:28:43,081 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2022-12-13 17:28:43,081 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 89 flow [2022-12-13 17:28:43,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-12-13 17:28:43,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:43,082 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] [2022-12-13 17:28:43,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:28:43,082 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)] === [2022-12-13 17:28:43,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:43,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1862398061, now seen corresponding path program 1 times [2022-12-13 17:28:43,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:43,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830958882] [2022-12-13 17:28:43,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:43,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:43,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:43,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830958882] [2022-12-13 17:28:43,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830958882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:43,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:43,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:28:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85077161] [2022-12-13 17:28:43,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:43,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:28:43,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:43,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:28:43,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:28:43,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 236 [2022-12-13 17:28:43,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:43,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 236 [2022-12-13 17:28:43,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:43,577 INFO L130 PetriNetUnfolder]: 1747/2413 cut-off events. [2022-12-13 17:28:43,577 INFO L131 PetriNetUnfolder]: For 670/675 co-relation queries the response was YES. [2022-12-13 17:28:43,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5613 conditions, 2413 events. 1747/2413 cut-off events. For 670/675 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10781 event pairs, 437 based on Foata normal form. 213/2605 useless extension candidates. Maximal degree in co-relation 1353. Up to 1384 conditions per place. [2022-12-13 17:28:43,591 INFO L137 encePairwiseOnDemand]: 229/236 looper letters, 56 selfloop transitions, 4 changer transitions 18/80 dead transitions. [2022-12-13 17:28:43,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 80 transitions, 371 flow [2022-12-13 17:28:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:28:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 17:28:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 604 transitions. [2022-12-13 17:28:43,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.511864406779661 [2022-12-13 17:28:43,594 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 604 transitions. [2022-12-13 17:28:43,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 604 transitions. [2022-12-13 17:28:43,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:43,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 604 transitions. [2022-12-13 17:28:43,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,597 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,597 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 89 flow. Second operand 5 states and 604 transitions. [2022-12-13 17:28:43,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 80 transitions, 371 flow [2022-12-13 17:28:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 80 transitions, 367 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:28:43,599 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 121 flow [2022-12-13 17:28:43,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2022-12-13 17:28:43,600 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2022-12-13 17:28:43,600 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 121 flow [2022-12-13 17:28:43,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:43,600 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] [2022-12-13 17:28:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:28:43,601 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)] === [2022-12-13 17:28:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 908382503, now seen corresponding path program 2 times [2022-12-13 17:28:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:43,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58128661] [2022-12-13 17:28:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:43,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58128661] [2022-12-13 17:28:43,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58128661] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:43,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:43,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:28:43,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085537428] [2022-12-13 17:28:43,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:43,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:28:43,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:43,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:28:43,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:28:43,709 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 236 [2022-12-13 17:28:43,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:43,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:43,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 236 [2022-12-13 17:28:43,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:43,900 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][48], [40#L62-4true, 16#L72-4true, 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 7#L94-4true, 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 84#L41-4true, Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,901 INFO L383 tUnfolder$Statistics]: this new event has 15 ancestors and is cut-off event [2022-12-13 17:28:43,901 INFO L386 tUnfolder$Statistics]: existing Event has 14 ancestors and is cut-off event [2022-12-13 17:28:43,901 INFO L386 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2022-12-13 17:28:43,901 INFO L386 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2022-12-13 17:28:43,927 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][48], [40#L62-4true, 16#L72-4true, 73#thread1EXITtrue, 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 7#L94-4true, 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,927 INFO L383 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,927 INFO L386 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2022-12-13 17:28:43,927 INFO L386 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,927 INFO L386 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,935 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][48], [40#L62-4true, 16#L72-4true, 96#L95-1true, 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 84#L41-4true, Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,935 INFO L383 tUnfolder$Statistics]: this new event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,935 INFO L386 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,935 INFO L386 tUnfolder$Statistics]: existing Event has 15 ancestors and is cut-off event [2022-12-13 17:28:43,935 INFO L386 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,965 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][48], [40#L62-4true, 73#thread1EXITtrue, 16#L72-4true, 96#L95-1true, 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,965 INFO L383 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,965 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,965 INFO L386 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,965 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,969 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 24#$Ultimate##0true, 16#L72-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), 95#L95-2true, 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,969 INFO L383 tUnfolder$Statistics]: this new event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,969 INFO L386 tUnfolder$Statistics]: existing Event has 16 ancestors and is cut-off event [2022-12-13 17:28:43,970 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,970 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,985 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 16#L72-4true, 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 95#L95-2true, 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,985 INFO L383 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,985 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,985 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,985 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,989 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][48], [40#L62-4true, 16#L72-4true, 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 95#L95-2true, 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,989 INFO L383 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,989 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,989 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,989 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,991 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 24#$Ultimate##0true, 16#L72-4true, 62#L96-1true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,991 INFO L383 tUnfolder$Statistics]: this new event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,991 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,991 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,991 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 17:28:43,996 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 16#L72-4true, 46#thread2EXITtrue, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), 95#L95-2true, 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,996 INFO L383 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2022-12-13 17:28:43,996 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:43,996 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,997 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:43,999 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 16#L72-4true, 31#L51-4true, 62#L96-1true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:43,999 INFO L383 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2022-12-13 17:28:43,999 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:43,999 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:43,999 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:44,000 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][48], [40#L62-4true, 16#L72-4true, 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 62#L96-1true, Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:44,000 INFO L383 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2022-12-13 17:28:44,001 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 17:28:44,001 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:44,001 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:44,005 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 16#L72-4true, 46#thread2EXITtrue, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 62#L96-1true, Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:44,005 INFO L383 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2022-12-13 17:28:44,005 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 17:28:44,005 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 17:28:44,005 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:44,014 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 16#L72-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 19#L96-2true, Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:44,014 INFO L383 tUnfolder$Statistics]: this new event has 21 ancestors and is cut-off event [2022-12-13 17:28:44,014 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 17:28:44,014 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 17:28:44,014 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 17:28:44,020 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][45], [40#L62-4true, 16#L72-4true, 80#L97-1true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 152#(and (<= (+ (* (div thread3Thread1of1ForFork1_~i~2 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), 144#true, Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:44,020 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2022-12-13 17:28:44,020 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 17:28:44,020 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 17:28:44,020 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 17:28:44,030 INFO L130 PetriNetUnfolder]: 1904/2588 cut-off events. [2022-12-13 17:28:44,030 INFO L131 PetriNetUnfolder]: For 2221/2488 co-relation queries the response was YES. [2022-12-13 17:28:44,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 2588 events. 1904/2588 cut-off events. For 2221/2488 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 11092 event pairs, 368 based on Foata normal form. 288/2784 useless extension candidates. Maximal degree in co-relation 5529. Up to 1653 conditions per place. [2022-12-13 17:28:44,040 INFO L137 encePairwiseOnDemand]: 231/236 looper letters, 52 selfloop transitions, 4 changer transitions 9/68 dead transitions. [2022-12-13 17:28:44,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 68 transitions, 362 flow [2022-12-13 17:28:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:28:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:28:44,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2022-12-13 17:28:44,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5190677966101694 [2022-12-13 17:28:44,042 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2022-12-13 17:28:44,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2022-12-13 17:28:44,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:44,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2022-12-13 17:28:44,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,045 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 121 flow. Second operand 4 states and 490 transitions. [2022-12-13 17:28:44,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 68 transitions, 362 flow [2022-12-13 17:28:44,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 68 transitions, 350 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-13 17:28:44,047 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 140 flow [2022-12-13 17:28:44,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-12-13 17:28:44,048 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2022-12-13 17:28:44,048 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 140 flow [2022-12-13 17:28:44,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:44,048 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] [2022-12-13 17:28:44,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:28:44,052 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)] === [2022-12-13 17:28:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:44,052 INFO L85 PathProgramCache]: Analyzing trace with hash 570858024, now seen corresponding path program 1 times [2022-12-13 17:28:44,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:44,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822505869] [2022-12-13 17:28:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:44,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:44,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:44,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822505869] [2022-12-13 17:28:44,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822505869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:44,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:44,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:28:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072590997] [2022-12-13 17:28:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:44,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:28:44,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:44,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:28:44,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:28:44,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 236 [2022-12-13 17:28:44,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:44,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 236 [2022-12-13 17:28:44,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:44,547 INFO L130 PetriNetUnfolder]: 1939/2751 cut-off events. [2022-12-13 17:28:44,547 INFO L131 PetriNetUnfolder]: For 4758/5068 co-relation queries the response was YES. [2022-12-13 17:28:44,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8341 conditions, 2751 events. 1939/2751 cut-off events. For 4758/5068 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12466 event pairs, 715 based on Foata normal form. 432/3126 useless extension candidates. Maximal degree in co-relation 3726. Up to 1808 conditions per place. [2022-12-13 17:28:44,558 INFO L137 encePairwiseOnDemand]: 229/236 looper letters, 60 selfloop transitions, 4 changer transitions 16/83 dead transitions. [2022-12-13 17:28:44,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 468 flow [2022-12-13 17:28:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:28:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 17:28:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2022-12-13 17:28:44,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2022-12-13 17:28:44,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2022-12-13 17:28:44,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2022-12-13 17:28:44,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:44,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2022-12-13 17:28:44,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,562 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,562 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 140 flow. Second operand 5 states and 600 transitions. [2022-12-13 17:28:44,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 468 flow [2022-12-13 17:28:44,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 461 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 17:28:44,565 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 175 flow [2022-12-13 17:28:44,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2022-12-13 17:28:44,566 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2022-12-13 17:28:44,566 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 175 flow [2022-12-13 17:28:44,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:44,566 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] [2022-12-13 17:28:44,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:28:44,566 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)] === [2022-12-13 17:28:44,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:44,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1615912746, now seen corresponding path program 2 times [2022-12-13 17:28:44,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:44,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070412696] [2022-12-13 17:28:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:44,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:44,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070412696] [2022-12-13 17:28:44,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070412696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:44,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:44,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:28:44,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444200999] [2022-12-13 17:28:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:44,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:28:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:28:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:28:44,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 236 [2022-12-13 17:28:44,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:44,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:44,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 236 [2022-12-13 17:28:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:45,022 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][60], [Black: 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 16#L72-4true, 62#L96-1true, 166#(= thread3Thread1of1ForFork1_~i~2 0), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), Black: 170#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 172#(and (<= (+ (* (div thread1Thread1of1ForFork2_~i~0 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 141#(= ~counter~0 0), 177#true, 40#L62-4true, 31#L51-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0))]) [2022-12-13 17:28:45,023 INFO L383 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2022-12-13 17:28:45,023 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:45,023 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 17:28:45,023 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 17:28:45,039 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][60], [Black: 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 16#L72-4true, 62#L96-1true, 166#(= thread3Thread1of1ForFork1_~i~2 0), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), Black: 170#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 172#(and (<= (+ (* (div thread1Thread1of1ForFork2_~i~0 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 141#(= ~counter~0 0), 40#L62-4true, 177#true, 46#thread2EXITtrue, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0))]) [2022-12-13 17:28:45,039 INFO L383 tUnfolder$Statistics]: this new event has 21 ancestors and is cut-off event [2022-12-13 17:28:45,039 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 17:28:45,039 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 17:28:45,039 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 17:28:45,068 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][60], [177#true, 40#L62-4true, Black: 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 16#L72-4true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 166#(= thread3Thread1of1ForFork1_~i~2 0), 19#L96-2true, 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), Black: 170#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 141#(= ~counter~0 0), Black: 172#(and (<= (+ (* (div thread1Thread1of1ForFork2_~i~0 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0))]) [2022-12-13 17:28:45,068 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2022-12-13 17:28:45,068 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 17:28:45,068 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 17:28:45,068 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 17:28:45,076 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([476] L72-4-->L72-4: Formula: (and (= v_~counter~0_82 (+ v_~c~0_44 v_~counter~0_81)) (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|) (< (mod |v_thread4Thread1of1ForFork3_~i~3#1_26| 4294967296) (mod v_~N~0_49 4294967296)) (= (+ |v_thread4Thread1of1ForFork3_~i~3#1_26| 1) |v_thread4Thread1of1ForFork3_~i~3#1_25|) (not (= |v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7| 0)) (= (ite (< 0 (mod v_~counter~0_82 4294967296)) 1 0) |v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|)) InVars {thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_26|, ~counter~0=v_~counter~0_82, ~c~0=v_~c~0_44, ~N~0=v_~N~0_49} OutVars{thread4Thread1of1ForFork3_~i~3#1=|v_thread4Thread1of1ForFork3_~i~3#1_25|, ~counter~0=v_~counter~0_81, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1_7|, ~c~0=v_~c~0_44, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1=|v_thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1_7|, ~N~0=v_~N~0_49, thread4Thread1of1ForFork3_#t~post4#1=|v_thread4Thread1of1ForFork3_#t~post4#1_17|} AuxVars[] AssignedVars[thread4Thread1of1ForFork3_~i~3#1, ~counter~0, thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1, thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1, thread4Thread1of1ForFork3_#t~post4#1][60], [177#true, 40#L62-4true, Black: 160#(and (<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0) (= |thread2Thread1of1ForFork0_~i~1#1| 0)), 16#L72-4true, 80#L97-1true, Black: 146#(= thread1Thread1of1ForFork2_~i~0 0), 166#(= thread3Thread1of1ForFork1_~i~2 0), 159#(<= (+ (* (div ~N~0 4294967296) 4294967296) 1) ~N~0), Black: 150#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread1Thread1of1ForFork2_~i~0 0)), Black: 170#(and (<= 0 (+ (div (- ~N~0) 4294967296) (div ~N~0 4294967296))) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 172#(and (<= (+ (* (div thread1Thread1of1ForFork2_~i~0 4294967296) 4294967296) ~N~0) (* (div ~N~0 4294967296) 4294967296)) (= thread1Thread1of1ForFork2_~i~0 0) (= thread3Thread1of1ForFork1_~i~2 0)), Black: 141#(= ~counter~0 0)]) [2022-12-13 17:28:45,076 INFO L383 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2022-12-13 17:28:45,076 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 17:28:45,076 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 17:28:45,076 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2022-12-13 17:28:45,090 INFO L130 PetriNetUnfolder]: 3749/5175 cut-off events. [2022-12-13 17:28:45,090 INFO L131 PetriNetUnfolder]: For 13005/13864 co-relation queries the response was YES. [2022-12-13 17:28:45,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18954 conditions, 5175 events. 3749/5175 cut-off events. For 13005/13864 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 25552 event pairs, 1235 based on Foata normal form. 619/5520 useless extension candidates. Maximal degree in co-relation 9203. Up to 2532 conditions per place. [2022-12-13 17:28:45,114 INFO L137 encePairwiseOnDemand]: 230/236 looper letters, 65 selfloop transitions, 12 changer transitions 7/87 dead transitions. [2022-12-13 17:28:45,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 87 transitions, 570 flow [2022-12-13 17:28:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:28:45,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:28:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2022-12-13 17:28:45,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.524364406779661 [2022-12-13 17:28:45,116 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2022-12-13 17:28:45,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2022-12-13 17:28:45,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:45,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2022-12-13 17:28:45,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,119 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,119 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 175 flow. Second operand 4 states and 495 transitions. [2022-12-13 17:28:45,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 87 transitions, 570 flow [2022-12-13 17:28:45,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 87 transitions, 550 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-13 17:28:45,123 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 297 flow [2022-12-13 17:28:45,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2022-12-13 17:28:45,124 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2022-12-13 17:28:45,124 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 297 flow [2022-12-13 17:28:45,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:45,125 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] [2022-12-13 17:28:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:28:45,125 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)] === [2022-12-13 17:28:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash -168728824, now seen corresponding path program 3 times [2022-12-13 17:28:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:45,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970366773] [2022-12-13 17:28:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:45,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:45,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970366773] [2022-12-13 17:28:45,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970366773] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:45,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:45,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:28:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732939674] [2022-12-13 17:28:45,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:28:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:28:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:28:45,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 236 [2022-12-13 17:28:45,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:45,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 236 [2022-12-13 17:28:45,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:45,848 INFO L130 PetriNetUnfolder]: 3977/5585 cut-off events. [2022-12-13 17:28:45,848 INFO L131 PetriNetUnfolder]: For 26424/27518 co-relation queries the response was YES. [2022-12-13 17:28:45,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22256 conditions, 5585 events. 3977/5585 cut-off events. For 26424/27518 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 28134 event pairs, 1421 based on Foata normal form. 703/6131 useless extension candidates. Maximal degree in co-relation 5480. Up to 3605 conditions per place. [2022-12-13 17:28:45,875 INFO L137 encePairwiseOnDemand]: 228/236 looper letters, 95 selfloop transitions, 16 changer transitions 8/122 dead transitions. [2022-12-13 17:28:45,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 122 transitions, 975 flow [2022-12-13 17:28:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:28:45,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:28:45,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 711 transitions. [2022-12-13 17:28:45,877 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5021186440677966 [2022-12-13 17:28:45,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 711 transitions. [2022-12-13 17:28:45,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 711 transitions. [2022-12-13 17:28:45,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:45,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 711 transitions. [2022-12-13 17:28:45,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,880 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 297 flow. Second operand 6 states and 711 transitions. [2022-12-13 17:28:45,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 122 transitions, 975 flow [2022-12-13 17:28:45,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 122 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:28:45,886 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 438 flow [2022-12-13 17:28:45,886 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2022-12-13 17:28:45,886 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2022-12-13 17:28:45,886 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 438 flow [2022-12-13 17:28:45,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:45,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:45,887 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] [2022-12-13 17:28:45,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:28:45,887 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)] === [2022-12-13 17:28:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash -627617663, now seen corresponding path program 3 times [2022-12-13 17:28:45,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:45,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591235473] [2022-12-13 17:28:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:45,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:45,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591235473] [2022-12-13 17:28:45,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591235473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:45,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:45,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:28:45,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910129484] [2022-12-13 17:28:45,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:45,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:28:45,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:45,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:28:45,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:28:46,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 236 [2022-12-13 17:28:46,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:46,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:46,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 236 [2022-12-13 17:28:46,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:46,761 INFO L130 PetriNetUnfolder]: 5153/7554 cut-off events. [2022-12-13 17:28:46,761 INFO L131 PetriNetUnfolder]: For 43599/44426 co-relation queries the response was YES. [2022-12-13 17:28:46,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31808 conditions, 7554 events. 5153/7554 cut-off events. For 43599/44426 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 41963 event pairs, 1855 based on Foata normal form. 1022/8522 useless extension candidates. Maximal degree in co-relation 13660. Up to 4347 conditions per place. [2022-12-13 17:28:46,790 INFO L137 encePairwiseOnDemand]: 229/236 looper letters, 103 selfloop transitions, 10 changer transitions 2/118 dead transitions. [2022-12-13 17:28:46,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 118 transitions, 1055 flow [2022-12-13 17:28:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:28:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 17:28:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 599 transitions. [2022-12-13 17:28:46,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5076271186440678 [2022-12-13 17:28:46,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 599 transitions. [2022-12-13 17:28:46,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 599 transitions. [2022-12-13 17:28:46,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:46,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 599 transitions. [2022-12-13 17:28:46,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:46,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:46,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:46,795 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 438 flow. Second operand 5 states and 599 transitions. [2022-12-13 17:28:46,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 118 transitions, 1055 flow [2022-12-13 17:28:46,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 1051 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 17:28:46,825 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 567 flow [2022-12-13 17:28:46,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=567, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2022-12-13 17:28:46,826 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2022-12-13 17:28:46,826 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 567 flow [2022-12-13 17:28:46,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:46,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:46,826 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] [2022-12-13 17:28:46,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:28:46,826 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)] === [2022-12-13 17:28:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:46,827 INFO L85 PathProgramCache]: Analyzing trace with hash -175083157, now seen corresponding path program 4 times [2022-12-13 17:28:46,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:46,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2187691] [2022-12-13 17:28:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:46,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:46,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2187691] [2022-12-13 17:28:46,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2187691] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:46,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:46,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 17:28:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025212045] [2022-12-13 17:28:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:28:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:28:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:28:46,945 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 236 [2022-12-13 17:28:46,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 567 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:46,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:46,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 236 [2022-12-13 17:28:46,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:47,639 INFO L130 PetriNetUnfolder]: 4967/7190 cut-off events. [2022-12-13 17:28:47,639 INFO L131 PetriNetUnfolder]: For 55362/57465 co-relation queries the response was YES. [2022-12-13 17:28:47,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35920 conditions, 7190 events. 4967/7190 cut-off events. For 55362/57465 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 40508 event pairs, 2008 based on Foata normal form. 612/7415 useless extension candidates. Maximal degree in co-relation 14243. Up to 3832 conditions per place. [2022-12-13 17:28:47,683 INFO L137 encePairwiseOnDemand]: 231/236 looper letters, 69 selfloop transitions, 5 changer transitions 24/104 dead transitions. [2022-12-13 17:28:47,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 104 transitions, 1032 flow [2022-12-13 17:28:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:28:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:28:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 486 transitions. [2022-12-13 17:28:47,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148305084745762 [2022-12-13 17:28:47,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 486 transitions. [2022-12-13 17:28:47,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 486 transitions. [2022-12-13 17:28:47,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:47,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 486 transitions. [2022-12-13 17:28:47,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:47,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:47,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:47,687 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 567 flow. Second operand 4 states and 486 transitions. [2022-12-13 17:28:47,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 104 transitions, 1032 flow [2022-12-13 17:28:47,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 1005 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 17:28:47,714 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 571 flow [2022-12-13 17:28:47,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=571, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2022-12-13 17:28:47,714 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2022-12-13 17:28:47,714 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 571 flow [2022-12-13 17:28:47,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:47,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:47,715 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:47,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:28:47,715 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)] === [2022-12-13 17:28:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1177966829, now seen corresponding path program 1 times [2022-12-13 17:28:47,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:47,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407802190] [2022-12-13 17:28:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:47,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:47,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407802190] [2022-12-13 17:28:47,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407802190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:47,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:47,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:28:47,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605674526] [2022-12-13 17:28:47,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:28:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:47,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:28:47,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:28:47,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 236 [2022-12-13 17:28:47,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 571 flow. Second operand has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:47,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:47,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 236 [2022-12-13 17:28:47,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:48,482 INFO L130 PetriNetUnfolder]: 4223/5906 cut-off events. [2022-12-13 17:28:48,483 INFO L131 PetriNetUnfolder]: For 53223/54234 co-relation queries the response was YES. [2022-12-13 17:28:48,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32622 conditions, 5906 events. 4223/5906 cut-off events. For 53223/54234 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 29166 event pairs, 1143 based on Foata normal form. 1256/7104 useless extension candidates. Maximal degree in co-relation 20723. Up to 4146 conditions per place. [2022-12-13 17:28:48,515 INFO L137 encePairwiseOnDemand]: 230/236 looper letters, 94 selfloop transitions, 19 changer transitions 20/138 dead transitions. [2022-12-13 17:28:48,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 138 transitions, 1533 flow [2022-12-13 17:28:48,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:28:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:28:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-12-13 17:28:48,517 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 17:28:48,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-12-13 17:28:48,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-12-13 17:28:48,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:48,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-12-13 17:28:48,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:48,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:48,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 236.0) internal successors, (1652), 7 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:48,523 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 571 flow. Second operand 6 states and 708 transitions. [2022-12-13 17:28:48,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 138 transitions, 1533 flow [2022-12-13 17:28:48,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 138 transitions, 1499 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 17:28:48,550 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 730 flow [2022-12-13 17:28:48,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2022-12-13 17:28:48,551 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2022-12-13 17:28:48,551 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 730 flow [2022-12-13 17:28:48,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:48,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:48,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:48,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:28:48,552 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)] === [2022-12-13 17:28:48,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash 723998629, now seen corresponding path program 2 times [2022-12-13 17:28:48,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:48,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288921459] [2022-12-13 17:28:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:48,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:48,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:48,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288921459] [2022-12-13 17:28:48,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288921459] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:48,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606454368] [2022-12-13 17:28:48,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:28:48,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:48,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:48,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:48,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:28:48,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:28:48,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:28:48,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:28:48,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:48,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:48,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:48,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606454368] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:28:48,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:28:48,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 17:28:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169087999] [2022-12-13 17:28:48,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:28:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 17:28:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 17:28:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:48,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 236 [2022-12-13 17:28:48,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 730 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:48,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:48,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 236 [2022-12-13 17:28:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:50,090 INFO L130 PetriNetUnfolder]: 5131/6846 cut-off events. [2022-12-13 17:28:50,091 INFO L131 PetriNetUnfolder]: For 76375/77032 co-relation queries the response was YES. [2022-12-13 17:28:50,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42046 conditions, 6846 events. 5131/6846 cut-off events. For 76375/77032 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 29888 event pairs, 1013 based on Foata normal form. 932/7775 useless extension candidates. Maximal degree in co-relation 31280. Up to 3471 conditions per place. [2022-12-13 17:28:50,130 INFO L137 encePairwiseOnDemand]: 227/236 looper letters, 130 selfloop transitions, 113 changer transitions 23/268 dead transitions. [2022-12-13 17:28:50,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 268 transitions, 3489 flow [2022-12-13 17:28:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:28:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:28:50,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1369 transitions. [2022-12-13 17:28:50,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4834039548022599 [2022-12-13 17:28:50,133 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1369 transitions. [2022-12-13 17:28:50,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1369 transitions. [2022-12-13 17:28:50,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:50,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1369 transitions. [2022-12-13 17:28:50,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.08333333333333) internal successors, (1369), 12 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:50,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 236.0) internal successors, (3068), 13 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:50,140 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 236.0) internal successors, (3068), 13 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:50,140 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 730 flow. Second operand 12 states and 1369 transitions. [2022-12-13 17:28:50,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 268 transitions, 3489 flow [2022-12-13 17:28:50,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 268 transitions, 3294 flow, removed 82 selfloop flow, removed 2 redundant places. [2022-12-13 17:28:50,189 INFO L231 Difference]: Finished difference. Result has 83 places, 155 transitions, 2427 flow [2022-12-13 17:28:50,189 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2427, PETRI_PLACES=83, PETRI_TRANSITIONS=155} [2022-12-13 17:28:50,190 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2022-12-13 17:28:50,190 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 155 transitions, 2427 flow [2022-12-13 17:28:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:50,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:50,190 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:50,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:28:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 17:28:50,392 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)] === [2022-12-13 17:28:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:50,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1408554197, now seen corresponding path program 1 times [2022-12-13 17:28:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:50,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250778472] [2022-12-13 17:28:50,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:28:50,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:50,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250778472] [2022-12-13 17:28:50,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250778472] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:50,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27832205] [2022-12-13 17:28:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:50,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:50,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:50,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:28:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:28:50,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:28:50,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 17:28:50,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27832205] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:50,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:28:50,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2022-12-13 17:28:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657269179] [2022-12-13 17:28:50,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:50,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:28:50,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:50,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:28:50,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:28:50,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 236 [2022-12-13 17:28:50,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 155 transitions, 2427 flow. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:50,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:50,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 236 [2022-12-13 17:28:50,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:51,532 INFO L130 PetriNetUnfolder]: 5266/6828 cut-off events. [2022-12-13 17:28:51,532 INFO L131 PetriNetUnfolder]: For 138151/140071 co-relation queries the response was YES. [2022-12-13 17:28:51,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53459 conditions, 6828 events. 5266/6828 cut-off events. For 138151/140071 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 28360 event pairs, 853 based on Foata normal form. 786/7353 useless extension candidates. Maximal degree in co-relation 50133. Up to 4871 conditions per place. [2022-12-13 17:28:51,570 INFO L137 encePairwiseOnDemand]: 231/236 looper letters, 132 selfloop transitions, 51 changer transitions 0/198 dead transitions. [2022-12-13 17:28:51,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 198 transitions, 3300 flow [2022-12-13 17:28:51,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:28:51,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:28:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 480 transitions. [2022-12-13 17:28:51,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5084745762711864 [2022-12-13 17:28:51,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 480 transitions. [2022-12-13 17:28:51,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 480 transitions. [2022-12-13 17:28:51,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:51,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 480 transitions. [2022-12-13 17:28:51,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:51,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:51,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:51,574 INFO L175 Difference]: Start difference. First operand has 83 places, 155 transitions, 2427 flow. Second operand 4 states and 480 transitions. [2022-12-13 17:28:51,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 198 transitions, 3300 flow [2022-12-13 17:28:51,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 198 transitions, 2840 flow, removed 184 selfloop flow, removed 3 redundant places. [2022-12-13 17:28:51,741 INFO L231 Difference]: Finished difference. Result has 82 places, 165 transitions, 2331 flow [2022-12-13 17:28:51,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2331, PETRI_PLACES=82, PETRI_TRANSITIONS=165} [2022-12-13 17:28:51,741 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2022-12-13 17:28:51,741 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 165 transitions, 2331 flow [2022-12-13 17:28:51,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:51,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:51,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:51,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 17:28:51,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 17:28:51,944 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)] === [2022-12-13 17:28:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -326899263, now seen corresponding path program 1 times [2022-12-13 17:28:51,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:51,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567566982] [2022-12-13 17:28:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:51,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:52,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567566982] [2022-12-13 17:28:52,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567566982] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:52,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991500842] [2022-12-13 17:28:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:52,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:52,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:52,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:52,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:28:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:52,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 17:28:52,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:52,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:52,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991500842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:28:52,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:28:52,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-12-13 17:28:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218494476] [2022-12-13 17:28:52,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:28:52,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:28:52,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:28:52,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:28:52,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 236 [2022-12-13 17:28:52,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 165 transitions, 2331 flow. Second operand has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:52,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:52,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 236 [2022-12-13 17:28:52,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:53,703 INFO L130 PetriNetUnfolder]: 9890/13058 cut-off events. [2022-12-13 17:28:53,703 INFO L131 PetriNetUnfolder]: For 248000/253018 co-relation queries the response was YES. [2022-12-13 17:28:53,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92858 conditions, 13058 events. 9890/13058 cut-off events. For 248000/253018 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 62573 event pairs, 1249 based on Foata normal form. 2446/14513 useless extension candidates. Maximal degree in co-relation 86131. Up to 8002 conditions per place. [2022-12-13 17:28:53,800 INFO L137 encePairwiseOnDemand]: 230/236 looper letters, 145 selfloop transitions, 144 changer transitions 3/313 dead transitions. [2022-12-13 17:28:53,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 313 transitions, 4744 flow [2022-12-13 17:28:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:28:53,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:28:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2022-12-13 17:28:53,802 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5455508474576272 [2022-12-13 17:28:53,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2022-12-13 17:28:53,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2022-12-13 17:28:53,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:53,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2022-12-13 17:28:53,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:53,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:53,805 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:53,805 INFO L175 Difference]: Start difference. First operand has 82 places, 165 transitions, 2331 flow. Second operand 4 states and 515 transitions. [2022-12-13 17:28:53,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 313 transitions, 4744 flow [2022-12-13 17:28:54,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 313 transitions, 4712 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:28:54,040 INFO L231 Difference]: Finished difference. Result has 86 places, 276 transitions, 4772 flow [2022-12-13 17:28:54,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=2299, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4772, PETRI_PLACES=86, PETRI_TRANSITIONS=276} [2022-12-13 17:28:54,040 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 48 predicate places. [2022-12-13 17:28:54,041 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 276 transitions, 4772 flow [2022-12-13 17:28:54,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:54,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:54,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:54,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:28:54,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:54,243 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)] === [2022-12-13 17:28:54,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:54,244 INFO L85 PathProgramCache]: Analyzing trace with hash 245042623, now seen corresponding path program 2 times [2022-12-13 17:28:54,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:54,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487665619] [2022-12-13 17:28:54,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:54,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:54,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487665619] [2022-12-13 17:28:54,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487665619] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:54,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13248991] [2022-12-13 17:28:54,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:28:54,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:54,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:54,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:28:54,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:28:54,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:28:54,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:28:54,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:54,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:28:54,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13248991] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:28:54,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:28:54,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 6 [2022-12-13 17:28:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756326036] [2022-12-13 17:28:54,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:28:54,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:28:54,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:28:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:28:54,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 236 [2022-12-13 17:28:54,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 276 transitions, 4772 flow. Second operand has 8 states, 8 states have (on average 117.375) internal successors, (939), 8 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:54,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:54,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 236 [2022-12-13 17:28:54,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:28:57,618 INFO L130 PetriNetUnfolder]: 18880/24996 cut-off events. [2022-12-13 17:28:57,618 INFO L131 PetriNetUnfolder]: For 619842/628963 co-relation queries the response was YES. [2022-12-13 17:28:57,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200345 conditions, 24996 events. 18880/24996 cut-off events. For 619842/628963 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 132931 event pairs, 2010 based on Foata normal form. 4042/27473 useless extension candidates. Maximal degree in co-relation 185138. Up to 15135 conditions per place. [2022-12-13 17:28:57,832 INFO L137 encePairwiseOnDemand]: 230/236 looper letters, 164 selfloop transitions, 317 changer transitions 3/505 dead transitions. [2022-12-13 17:28:57,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 505 transitions, 9033 flow [2022-12-13 17:28:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:28:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 17:28:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-12-13 17:28:57,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.55 [2022-12-13 17:28:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-12-13 17:28:57,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-12-13 17:28:57,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:28:57,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-12-13 17:28:57,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:57,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:57,838 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:57,839 INFO L175 Difference]: Start difference. First operand has 86 places, 276 transitions, 4772 flow. Second operand 5 states and 649 transitions. [2022-12-13 17:28:57,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 505 transitions, 9033 flow [2022-12-13 17:28:58,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 505 transitions, 8867 flow, removed 83 selfloop flow, removed 0 redundant places. [2022-12-13 17:28:58,613 INFO L231 Difference]: Finished difference. Result has 92 places, 449 transitions, 8859 flow [2022-12-13 17:28:58,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=4606, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8859, PETRI_PLACES=92, PETRI_TRANSITIONS=449} [2022-12-13 17:28:58,614 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 54 predicate places. [2022-12-13 17:28:58,614 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 449 transitions, 8859 flow [2022-12-13 17:28:58,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.375) internal successors, (939), 8 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:58,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:28:58,614 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:58,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:28:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 17:28:58,816 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)] === [2022-12-13 17:28:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:58,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2146043329, now seen corresponding path program 3 times [2022-12-13 17:28:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:58,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971289550] [2022-12-13 17:28:58,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:58,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:58,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971289550] [2022-12-13 17:28:58,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971289550] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:58,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093539584] [2022-12-13 17:28:58,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:28:58,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:58,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:58,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:28:59,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:28:59,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:28:59,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:28:59,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:59,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:28:59,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093539584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:28:59,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:28:59,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-12-13 17:28:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253600584] [2022-12-13 17:28:59,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:28:59,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:28:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:59,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:28:59,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:28:59,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 236 [2022-12-13 17:28:59,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 449 transitions, 8859 flow. Second operand has 14 states, 14 states have (on average 105.92857142857143) internal successors, (1483), 14 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:59,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:28:59,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 236 [2022-12-13 17:28:59,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:29:13,394 INFO L130 PetriNetUnfolder]: 61077/84172 cut-off events. [2022-12-13 17:29:13,395 INFO L131 PetriNetUnfolder]: For 1610119/1611377 co-relation queries the response was YES. [2022-12-13 17:29:13,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641614 conditions, 84172 events. 61077/84172 cut-off events. For 1610119/1611377 co-relation queries the response was YES. Maximal size of possible extension queue 3019. Compared 548760 event pairs, 3107 based on Foata normal form. 2471/86530 useless extension candidates. Maximal degree in co-relation 607818. Up to 32405 conditions per place. [2022-12-13 17:29:14,043 INFO L137 encePairwiseOnDemand]: 227/236 looper letters, 2020 selfloop transitions, 768 changer transitions 4/2799 dead transitions. [2022-12-13 17:29:14,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 2799 transitions, 59164 flow [2022-12-13 17:29:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 17:29:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-13 17:29:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5355 transitions. [2022-12-13 17:29:14,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4827803822574829 [2022-12-13 17:29:14,053 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5355 transitions. [2022-12-13 17:29:14,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5355 transitions. [2022-12-13 17:29:14,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:29:14,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5355 transitions. [2022-12-13 17:29:14,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 113.93617021276596) internal successors, (5355), 47 states have internal predecessors, (5355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:14,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 236.0) internal successors, (11328), 48 states have internal predecessors, (11328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:14,075 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 236.0) internal successors, (11328), 48 states have internal predecessors, (11328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:14,075 INFO L175 Difference]: Start difference. First operand has 92 places, 449 transitions, 8859 flow. Second operand 47 states and 5355 transitions. [2022-12-13 17:29:14,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 2799 transitions, 59164 flow [2022-12-13 17:29:20,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 2799 transitions, 55896 flow, removed 1634 selfloop flow, removed 0 redundant places. [2022-12-13 17:29:20,314 INFO L231 Difference]: Finished difference. Result has 168 places, 1243 transitions, 27879 flow [2022-12-13 17:29:20,315 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=8347, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=27879, PETRI_PLACES=168, PETRI_TRANSITIONS=1243} [2022-12-13 17:29:20,315 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 130 predicate places. [2022-12-13 17:29:20,315 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 1243 transitions, 27879 flow [2022-12-13 17:29:20,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 105.92857142857143) internal successors, (1483), 14 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:20,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:29:20,316 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:29:20,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 17:29:20,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 17:29:20,518 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)] === [2022-12-13 17:29:20,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:29:20,519 INFO L85 PathProgramCache]: Analyzing trace with hash -912143171, now seen corresponding path program 4 times [2022-12-13 17:29:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:29:20,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954225874] [2022-12-13 17:29:20,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:29:20,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:29:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:29:20,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:29:20,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954225874] [2022-12-13 17:29:20,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954225874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:29:20,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702890821] [2022-12-13 17:29:20,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 17:29:20,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:29:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:29:20,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:29:20,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:29:20,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 17:29:20,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:29:20,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:29:20,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:29:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:29:20,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:29:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:29:20,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702890821] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:29:20,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:29:20,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-12-13 17:29:20,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589771369] [2022-12-13 17:29:20,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:29:20,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:29:20,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:29:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:29:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:29:20,964 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 236 [2022-12-13 17:29:20,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 1243 transitions, 27879 flow. Second operand has 14 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:29:20,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:29:20,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 236 [2022-12-13 17:29:20,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:30:04,441 INFO L130 PetriNetUnfolder]: 121495/169568 cut-off events. [2022-12-13 17:30:04,441 INFO L131 PetriNetUnfolder]: For 6809630/6818387 co-relation queries the response was YES. [2022-12-13 17:30:05,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624070 conditions, 169568 events. 121495/169568 cut-off events. For 6809630/6818387 co-relation queries the response was YES. Maximal size of possible extension queue 6539. Compared 1245228 event pairs, 6700 based on Foata normal form. 8863/176909 useless extension candidates. Maximal degree in co-relation 1530939. Up to 63195 conditions per place. [2022-12-13 17:30:06,526 INFO L137 encePairwiseOnDemand]: 230/236 looper letters, 3181 selfloop transitions, 1088 changer transitions 218/4530 dead transitions. [2022-12-13 17:30:06,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 4530 transitions, 111481 flow [2022-12-13 17:30:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 17:30:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-13 17:30:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3542 transitions. [2022-12-13 17:30:06,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5002824858757062 [2022-12-13 17:30:06,531 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3542 transitions. [2022-12-13 17:30:06,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3542 transitions. [2022-12-13 17:30:06,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:30:06,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3542 transitions. [2022-12-13 17:30:06,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 118.06666666666666) internal successors, (3542), 30 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:06,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 236.0) internal successors, (7316), 31 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:06,543 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 236.0) internal successors, (7316), 31 states have internal predecessors, (7316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:06,543 INFO L175 Difference]: Start difference. First operand has 168 places, 1243 transitions, 27879 flow. Second operand 30 states and 3542 transitions. [2022-12-13 17:30:06,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 4530 transitions, 111481 flow [2022-12-13 17:32:03,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 4530 transitions, 99682 flow, removed 4712 selfloop flow, removed 4 redundant places. [2022-12-13 17:32:03,684 INFO L231 Difference]: Finished difference. Result has 205 places, 2111 transitions, 42335 flow [2022-12-13 17:32:03,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=24357, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=790, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=42335, PETRI_PLACES=205, PETRI_TRANSITIONS=2111} [2022-12-13 17:32:03,685 INFO L288 CegarLoopForPetriNet]: 38 programPoint places, 167 predicate places. [2022-12-13 17:32:03,685 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 2111 transitions, 42335 flow [2022-12-13 17:32:03,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 107.0) internal successors, (1498), 14 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:32:03,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:32:03,685 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:03,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 17:32:03,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 17:32:03,887 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)] === [2022-12-13 17:32:03,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:03,888 INFO L85 PathProgramCache]: Analyzing trace with hash -959205874, now seen corresponding path program 5 times [2022-12-13 17:32:03,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:03,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024051806] [2022-12-13 17:32:03,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:32:04,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:04,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024051806] [2022-12-13 17:32:04,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024051806] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:32:04,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675118982] [2022-12-13 17:32:04,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 17:32:04,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:04,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:04,047 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:04,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7e71ad8-9cf6-487f-92e8-8916a3e23e9b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:32:04,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:32:04,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:32:04,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:32:04,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:32:04,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:32:04,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675118982] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:04,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:32:04,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-12-13 17:32:04,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763861134] [2022-12-13 17:32:04,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:04,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:32:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:32:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:32:04,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 236 [2022-12-13 17:32:04,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 2111 transitions, 42335 flow. Second operand has 13 states, 13 states have (on average 107.23076923076923) internal successors, (1394), 13 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:32:04,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:32:04,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 236 [2022-12-13 17:32:04,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:35,001 INFO L130 PetriNetUnfolder]: 292911/409725 cut-off events. [2022-12-13 17:34:35,001 INFO L131 PetriNetUnfolder]: For 17715694/17721993 co-relation queries the response was YES. [2022-12-13 17:34:38,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351005 conditions, 409725 events. 292911/409725 cut-off events. For 17715694/17721993 co-relation queries the response was YES. Maximal size of possible extension queue 12244. Compared 3240109 event pairs, 47235 based on Foata normal form. 7618/416834 useless extension candidates. Maximal degree in co-relation 4221670. Up to 147270 conditions per place. [2022-12-13 17:34:40,594 INFO L137 encePairwiseOnDemand]: 229/236 looper letters, 4447 selfloop transitions, 1651 changer transitions 13/6129 dead transitions. [2022-12-13 17:34:40,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 6129 transitions, 140495 flow [2022-12-13 17:34:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 17:34:40,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 17:34:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2218 transitions. [2022-12-13 17:34:40,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49464763603925066 [2022-12-13 17:34:40,598 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2218 transitions. [2022-12-13 17:34:40,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2218 transitions. [2022-12-13 17:34:40,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:40,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2218 transitions. [2022-12-13 17:34:40,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 116.73684210526316) internal successors, (2218), 19 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:34:40,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 236.0) internal successors, (4720), 20 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:34:40,609 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 236.0) internal successors, (4720), 20 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:34:40,609 INFO L175 Difference]: Start difference. First operand has 205 places, 2111 transitions, 42335 flow. Second operand 19 states and 2218 transitions. [2022-12-13 17:34:40,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 6129 transitions, 140495 flow