./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --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_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/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_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/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_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- 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 15:38:07,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:38:07,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:38:07,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:38:07,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:38:07,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:38:07,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:38:07,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:38:07,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:38:07,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:38:07,108 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:38:07,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:38:07,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:38:07,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:38:07,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:38:07,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:38:07,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:38:07,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:38:07,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:38:07,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:38:07,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:38:07,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:38:07,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:38:07,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:38:07,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:38:07,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:38:07,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:38:07,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:38:07,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:38:07,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:38:07,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:38:07,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:38:07,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:38:07,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:38:07,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:38:07,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:38:07,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:38:07,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:38:07,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:38:07,132 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:38:07,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:38:07,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:38:07,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:38:07,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:38:07,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:38:07,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:38:07,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:38:07,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:38:07,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:38:07,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:38:07,160 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:38:07,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:38:07,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:38:07,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:38:07,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:38:07,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:38:07,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:38:07,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:38:07,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:38:07,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:38:07,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:38:07,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:38:07,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:38:07,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:38:07,162 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:38:07,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:38:07,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:38:07,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:38:07,164 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:38:07,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:38:07,164 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:38:07,164 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_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2022-12-13 15:38:07,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:38:07,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:38:07,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:38:07,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:38:07,379 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:38:07,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-2.i [2022-12-13 15:38:09,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:38:10,149 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:38:10,149 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/sv-benchmarks/c/pthread/triangular-2.i [2022-12-13 15:38:10,160 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/data/855bebc75/e73aef7ef28a4b038764859364e1451e/FLAGa0d2eb462 [2022-12-13 15:38:10,175 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/data/855bebc75/e73aef7ef28a4b038764859364e1451e [2022-12-13 15:38:10,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:38:10,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:38:10,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:38:10,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:38:10,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:38:10,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4175fed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10, skipping insertion in model container [2022-12-13 15:38:10,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:38:10,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:38:10,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,490 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_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-12-13 15:38:10,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:38:10,500 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:38:10,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:38:10,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:38:10,537 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_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-12-13 15:38:10,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:38:10,562 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:38:10,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10 WrapperNode [2022-12-13 15:38:10,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:38:10,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:38:10,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:38:10,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:38:10,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,595 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-13 15:38:10,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:38:10,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:38:10,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:38:10,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:38:10,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,615 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:38:10,619 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:38:10,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:38:10,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:38:10,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (1/1) ... [2022-12-13 15:38:10,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:38:10,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:10,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:38:10,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:38:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 15:38:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 15:38:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 15:38:10,673 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 15:38:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:38:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:38:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:38:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:38:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:38:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:38:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:38:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:38:10,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:38:10,675 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 15:38:10,767 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:38:10,769 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:38:10,883 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:38:10,888 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:38:10,888 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:38:10,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:38:10 BoogieIcfgContainer [2022-12-13 15:38:10,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:38:10,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:38:10,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:38:10,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:38:10,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:38:10" (1/3) ... [2022-12-13 15:38:10,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79172202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:38:10, skipping insertion in model container [2022-12-13 15:38:10,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:38:10" (2/3) ... [2022-12-13 15:38:10,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79172202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:38:10, skipping insertion in model container [2022-12-13 15:38:10,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:38:10" (3/3) ... [2022-12-13 15:38:10,897 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2022-12-13 15:38:10,903 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:38:10,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:38:10,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:38:10,911 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:38:10,952 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:38:10,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-12-13 15:38:11,005 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-12-13 15:38:11,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:38:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-13 15:38:11,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-12-13 15:38:11,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-12-13 15:38:11,015 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:38:11,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 142 flow [2022-12-13 15:38:11,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 142 flow [2022-12-13 15:38:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 142 flow [2022-12-13 15:38:11,038 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-12-13 15:38:11,038 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:38:11,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-12-13 15:38:11,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 1122 [2022-12-13 15:38:12,600 INFO L134 LiptonReduction]: Checked pairs total: 1071 [2022-12-13 15:38:12,600 INFO L136 LiptonReduction]: Total number of compositions: 62 [2022-12-13 15:38:12,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:38:12,615 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;@37900363, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:38:12,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 15:38:12,617 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-12-13 15:38:12,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:38:12,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:12,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:38:12,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:12,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:12,622 INFO L85 PathProgramCache]: Analyzing trace with hash -453767177, now seen corresponding path program 1 times [2022-12-13 15:38:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:12,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790466505] [2022-12-13 15:38:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:12,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:12,876 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 15:38:12,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:12,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790466505] [2022-12-13 15:38:12,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790466505] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:12,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:12,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:38:12,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358754128] [2022-12-13 15:38:12,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:12,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:38:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:38:12,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:38:12,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 132 [2022-12-13 15:38:12,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 15:38:12,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:12,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 132 [2022-12-13 15:38:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:13,007 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-12-13 15:38:13,007 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:38:13,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 381 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2022-12-13 15:38:13,009 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2022-12-13 15:38:13,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2022-12-13 15:38:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:38:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:38:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2022-12-13 15:38:13,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2022-12-13 15:38:13,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2022-12-13 15:38:13,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2022-12-13 15:38:13,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:13,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2022-12-13 15:38:13,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 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 15:38:13,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 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 15:38:13,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 0 states have call successors, (0), 0 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 15:38:13,028 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 261 transitions. [2022-12-13 15:38:13,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2022-12-13 15:38:13,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:38:13,032 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2022-12-13 15:38:13,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-12-13 15:38:13,035 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2022-12-13 15:38:13,036 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2022-12-13 15:38:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 15:38:13,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:13,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:38:13,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2016076337, now seen corresponding path program 1 times [2022-12-13 15:38:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:13,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448838843] [2022-12-13 15:38:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:13,137 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 15:38:13,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:13,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448838843] [2022-12-13 15:38:13,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448838843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:13,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:13,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:38:13,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594831569] [2022-12-13 15:38:13,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:13,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:38:13,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:38:13,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:38:13,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:13,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 15:38:13,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:13,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:13,243 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-12-13 15:38:13,243 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-12-13 15:38:13,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 660 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2022-12-13 15:38:13,246 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-12-13 15:38:13,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2022-12-13 15:38:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:38:13,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:38:13,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2022-12-13 15:38:13,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2022-12-13 15:38:13,251 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 380 transitions. [2022-12-13 15:38:13,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 380 transitions. [2022-12-13 15:38:13,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:13,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 380 transitions. [2022-12-13 15:38:13,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 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 15:38:13,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 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 15:38:13,259 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 132.0) internal successors, (924), 7 states have internal predecessors, (924), 0 states have call successors, (0), 0 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 15:38:13,259 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 380 transitions. [2022-12-13 15:38:13,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2022-12-13 15:38:13,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:38:13,262 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2022-12-13 15:38:13,262 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-12-13 15:38:13,263 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-12-13 15:38:13,263 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2022-12-13 15:38:13,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 15:38:13,264 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:13,264 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:38:13,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2016092147, now seen corresponding path program 2 times [2022-12-13 15:38:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:13,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158360847] [2022-12-13 15:38:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:13,373 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 15:38:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158360847] [2022-12-13 15:38:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158360847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:13,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:13,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:38:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405247093] [2022-12-13 15:38:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:38:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:38:13,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:38:13,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:13,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 15:38:13,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:13,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:13,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:13,490 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2022-12-13 15:38:13,490 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2022-12-13 15:38:13,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 219 events. 126/219 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 681 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2022-12-13 15:38:13,492 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2022-12-13 15:38:13,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 348 flow [2022-12-13 15:38:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:38:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:38:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 441 transitions. [2022-12-13 15:38:13,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2022-12-13 15:38:13,495 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 441 transitions. [2022-12-13 15:38:13,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 441 transitions. [2022-12-13 15:38:13,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:13,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 441 transitions. [2022-12-13 15:38:13,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.0) internal successors, (441), 7 states have internal predecessors, (441), 0 states have call successors, (0), 0 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 15:38:13,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:38:13,500 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:38:13,500 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 7 states and 441 transitions. [2022-12-13 15:38:13,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 348 flow [2022-12-13 15:38:13,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 344 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 15:38:13,503 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 240 flow [2022-12-13 15:38:13,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2022-12-13 15:38:13,504 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 21 predicate places. [2022-12-13 15:38:13,504 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 240 flow [2022-12-13 15:38:13,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 15:38:13,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:13,505 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:38:13,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:13,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash -224372252, now seen corresponding path program 1 times [2022-12-13 15:38:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:13,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161593375] [2022-12-13 15:38:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:13,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:13,615 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 15:38:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:13,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161593375] [2022-12-13 15:38:13,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161593375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:13,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:13,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:38:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105149932] [2022-12-13 15:38:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:13,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:38:13,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:38:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:38:13,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:13,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 15:38:13,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:13,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:13,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:13,724 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2022-12-13 15:38:13,725 INFO L131 PetriNetUnfolder]: For 821/821 co-relation queries the response was YES. [2022-12-13 15:38:13,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 283 events. 162/283 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 944 event pairs, 16 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1058. Up to 71 conditions per place. [2022-12-13 15:38:13,728 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2022-12-13 15:38:13,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 488 flow [2022-12-13 15:38:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:38:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:38:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 502 transitions. [2022-12-13 15:38:13,730 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2022-12-13 15:38:13,730 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 502 transitions. [2022-12-13 15:38:13,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 502 transitions. [2022-12-13 15:38:13,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:13,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 502 transitions. [2022-12-13 15:38:13,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.75) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 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 15:38:13,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 15:38:13,735 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 132.0) internal successors, (1188), 9 states have internal predecessors, (1188), 0 states have call successors, (0), 0 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 15:38:13,735 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 240 flow. Second operand 8 states and 502 transitions. [2022-12-13 15:38:13,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 488 flow [2022-12-13 15:38:13,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 467 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 15:38:13,741 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 346 flow [2022-12-13 15:38:13,741 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2022-12-13 15:38:13,742 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 31 predicate places. [2022-12-13 15:38:13,742 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 346 flow [2022-12-13 15:38:13,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 15:38:13,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:13,743 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:13,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:38:13,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash -196650812, now seen corresponding path program 2 times [2022-12-13 15:38:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:13,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77486975] [2022-12-13 15:38:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:13,826 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 15:38:13,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:13,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77486975] [2022-12-13 15:38:13,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77486975] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:38:13,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:38:13,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:38:13,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854914109] [2022-12-13 15:38:13,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:38:13,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:38:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:13,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:38:13,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:38:13,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:13,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 15:38:13,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:13,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:13,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:13,957 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2022-12-13 15:38:13,957 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2022-12-13 15:38:13,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1208 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 931 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1179. Up to 67 conditions per place. [2022-12-13 15:38:13,959 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2022-12-13 15:38:13,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 576 flow [2022-12-13 15:38:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:38:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:38:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 439 transitions. [2022-12-13 15:38:13,961 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4751082251082251 [2022-12-13 15:38:13,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 439 transitions. [2022-12-13 15:38:13,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 439 transitions. [2022-12-13 15:38:13,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:13,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 439 transitions. [2022-12-13 15:38:13,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.714285714285715) internal successors, (439), 7 states have internal predecessors, (439), 0 states have call successors, (0), 0 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 15:38:13,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:38:13,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 132.0) internal successors, (1056), 8 states have internal predecessors, (1056), 0 states have call successors, (0), 0 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 15:38:13,965 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 346 flow. Second operand 7 states and 439 transitions. [2022-12-13 15:38:13,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 576 flow [2022-12-13 15:38:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 537 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 15:38:13,972 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 398 flow [2022-12-13 15:38:13,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=398, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2022-12-13 15:38:13,973 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 35 predicate places. [2022-12-13 15:38:13,973 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 398 flow [2022-12-13 15:38:13,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 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 15:38:13,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:13,974 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:13,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:38:13,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:13,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1801188768, now seen corresponding path program 3 times [2022-12-13 15:38:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:13,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710180270] [2022-12-13 15:38:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:14,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710180270] [2022-12-13 15:38:14,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710180270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:14,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469950991] [2022-12-13 15:38:14,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:38:14,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:14,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:14,081 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:14,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:38:14,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 15:38:14,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:14,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 15:38:14,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:14,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:14,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469950991] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:14,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:14,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-13 15:38:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280486903] [2022-12-13 15:38:14,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:14,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:38:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:38:14,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:38:14,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:14,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 15:38:14,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:14,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:14,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:14,626 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2022-12-13 15:38:14,626 INFO L131 PetriNetUnfolder]: For 2187/2187 co-relation queries the response was YES. [2022-12-13 15:38:14,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 351 events. 202/351 cut-off events. For 2187/2187 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1199 event pairs, 10 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1647. Up to 87 conditions per place. [2022-12-13 15:38:14,628 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 36 selfloop transitions, 38 changer transitions 26/100 dead transitions. [2022-12-13 15:38:14,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 992 flow [2022-12-13 15:38:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:38:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:38:14,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 999 transitions. [2022-12-13 15:38:14,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47301136363636365 [2022-12-13 15:38:14,630 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 999 transitions. [2022-12-13 15:38:14,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 999 transitions. [2022-12-13 15:38:14,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:14,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 999 transitions. [2022-12-13 15:38:14,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.4375) internal successors, (999), 16 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 15:38:14,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 15:38:14,634 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 15:38:14,634 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 398 flow. Second operand 16 states and 999 transitions. [2022-12-13 15:38:14,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 992 flow [2022-12-13 15:38:14,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 100 transitions, 927 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-12-13 15:38:14,639 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 705 flow [2022-12-13 15:38:14,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=705, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2022-12-13 15:38:14,639 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 49 predicate places. [2022-12-13 15:38:14,639 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 705 flow [2022-12-13 15:38:14,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 15:38:14,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:14,640 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:14,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:38:14,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 15:38:14,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:14,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 15514281, now seen corresponding path program 4 times [2022-12-13 15:38:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:14,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011848123] [2022-12-13 15:38:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:14,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:14,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011848123] [2022-12-13 15:38:14,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011848123] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:14,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276101937] [2022-12-13 15:38:14,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:38:14,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:14,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:14,952 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:14,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:38:15,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:38:15,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:15,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 15:38:15,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:15,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276101937] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:15,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:15,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 15:38:15,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272621355] [2022-12-13 15:38:15,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:38:15,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:15,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:38:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:38:15,236 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:15,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 705 flow. Second operand has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 15:38:15,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:15,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:15,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:15,486 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2022-12-13 15:38:15,487 INFO L131 PetriNetUnfolder]: For 4314/4314 co-relation queries the response was YES. [2022-12-13 15:38:15,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2453 conditions, 463 events. 258/463 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1642 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2419. Up to 237 conditions per place. [2022-12-13 15:38:15,490 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2022-12-13 15:38:15,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1473 flow [2022-12-13 15:38:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:38:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:38:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 995 transitions. [2022-12-13 15:38:15,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47111742424242425 [2022-12-13 15:38:15,494 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 995 transitions. [2022-12-13 15:38:15,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 995 transitions. [2022-12-13 15:38:15,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:15,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 995 transitions. [2022-12-13 15:38:15,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.1875) internal successors, (995), 16 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:38:15,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 15:38:15,501 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 132.0) internal successors, (2244), 17 states have internal predecessors, (2244), 0 states have call successors, (0), 0 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 15:38:15,501 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 705 flow. Second operand 16 states and 995 transitions. [2022-12-13 15:38:15,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1473 flow [2022-12-13 15:38:15,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 1098 flow, removed 170 selfloop flow, removed 7 redundant places. [2022-12-13 15:38:15,514 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 769 flow [2022-12-13 15:38:15,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=769, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2022-12-13 15:38:15,515 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 67 predicate places. [2022-12-13 15:38:15,515 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 769 flow [2022-12-13 15:38:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 15:38:15,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:15,515 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:15,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:38:15,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:15,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:15,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1670825511, now seen corresponding path program 5 times [2022-12-13 15:38:15,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:15,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396670603] [2022-12-13 15:38:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:15,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:15,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:15,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396670603] [2022-12-13 15:38:15,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396670603] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:15,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425751125] [2022-12-13 15:38:15,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:38:15,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:15,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:15,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:15,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:38:15,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 15:38:15,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:15,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 15:38:15,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:15,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:16,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:16,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425751125] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:16,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:16,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 15:38:16,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027179228] [2022-12-13 15:38:16,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:16,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 15:38:16,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:16,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 15:38:16,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:38:16,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:16,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 769 flow. Second operand has 17 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 0 states have call successors, (0), 0 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 15:38:16,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:16,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:16,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:16,548 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2022-12-13 15:38:16,549 INFO L131 PetriNetUnfolder]: For 12092/12092 co-relation queries the response was YES. [2022-12-13 15:38:16,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 755 events. 412/755 cut-off events. For 12092/12092 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3330 event pairs, 42 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3958. Up to 227 conditions per place. [2022-12-13 15:38:16,554 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2022-12-13 15:38:16,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 182 transitions, 2087 flow [2022-12-13 15:38:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 15:38:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 15:38:16,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1368 transitions. [2022-12-13 15:38:16,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2022-12-13 15:38:16,561 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1368 transitions. [2022-12-13 15:38:16,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1368 transitions. [2022-12-13 15:38:16,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:16,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1368 transitions. [2022-12-13 15:38:16,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.18181818181818) internal successors, (1368), 22 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 15:38:16,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 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 15:38:16,575 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 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 15:38:16,575 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 769 flow. Second operand 22 states and 1368 transitions. [2022-12-13 15:38:16,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 182 transitions, 2087 flow [2022-12-13 15:38:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 182 transitions, 1966 flow, removed 51 selfloop flow, removed 4 redundant places. [2022-12-13 15:38:16,603 INFO L231 Difference]: Finished difference. Result has 116 places, 108 transitions, 1476 flow [2022-12-13 15:38:16,604 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1476, PETRI_PLACES=116, PETRI_TRANSITIONS=108} [2022-12-13 15:38:16,604 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 98 predicate places. [2022-12-13 15:38:16,604 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 108 transitions, 1476 flow [2022-12-13 15:38:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.8235294117647) internal successors, (1000), 17 states have internal predecessors, (1000), 0 states have call successors, (0), 0 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 15:38:16,605 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:16,605 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:16,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:38:16,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:16,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:16,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:16,806 INFO L85 PathProgramCache]: Analyzing trace with hash -2139754649, now seen corresponding path program 6 times [2022-12-13 15:38:16,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:16,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208445720] [2022-12-13 15:38:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:16,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:16,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208445720] [2022-12-13 15:38:16,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208445720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708606375] [2022-12-13 15:38:16,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 15:38:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:16,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:16,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:16,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:38:16,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 15:38:16,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:16,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 15:38:16,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:17,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:17,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708606375] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:17,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:17,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 15:38:17,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669251066] [2022-12-13 15:38:17,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:38:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:38:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:38:17,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:17,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 108 transitions, 1476 flow. Second operand has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 15:38:17,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:17,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:17,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:17,593 INFO L130 PetriNetUnfolder]: 612/1111 cut-off events. [2022-12-13 15:38:17,593 INFO L131 PetriNetUnfolder]: For 36627/36627 co-relation queries the response was YES. [2022-12-13 15:38:17,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 1111 events. 612/1111 cut-off events. For 36627/36627 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5407 event pairs, 30 based on Foata normal form. 36/1147 useless extension candidates. Maximal degree in co-relation 7754. Up to 355 conditions per place. [2022-12-13 15:38:17,599 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 71 selfloop transitions, 134 changer transitions 41/246 dead transitions. [2022-12-13 15:38:17,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 246 transitions, 3750 flow [2022-12-13 15:38:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 15:38:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 15:38:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1679 transitions. [2022-12-13 15:38:17,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4710998877665544 [2022-12-13 15:38:17,602 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1679 transitions. [2022-12-13 15:38:17,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1679 transitions. [2022-12-13 15:38:17,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:17,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1679 transitions. [2022-12-13 15:38:17,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 62.18518518518518) internal successors, (1679), 27 states have internal predecessors, (1679), 0 states have call successors, (0), 0 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 15:38:17,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 132.0) internal successors, (3696), 28 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 15:38:17,607 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 132.0) internal successors, (3696), 28 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 15:38:17,608 INFO L175 Difference]: Start difference. First operand has 116 places, 108 transitions, 1476 flow. Second operand 27 states and 1679 transitions. [2022-12-13 15:38:17,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 246 transitions, 3750 flow [2022-12-13 15:38:17,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 246 transitions, 3445 flow, removed 144 selfloop flow, removed 4 redundant places. [2022-12-13 15:38:17,672 INFO L231 Difference]: Finished difference. Result has 153 places, 158 transitions, 2639 flow [2022-12-13 15:38:17,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2639, PETRI_PLACES=153, PETRI_TRANSITIONS=158} [2022-12-13 15:38:17,673 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 135 predicate places. [2022-12-13 15:38:17,673 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 158 transitions, 2639 flow [2022-12-13 15:38:17,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.8125) internal successors, (941), 16 states have internal predecessors, (941), 0 states have call successors, (0), 0 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 15:38:17,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:17,674 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:17,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 15:38:17,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:17,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1308408293, now seen corresponding path program 7 times [2022-12-13 15:38:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:17,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785921750] [2022-12-13 15:38:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:18,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785921750] [2022-12-13 15:38:18,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785921750] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:18,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933548903] [2022-12-13 15:38:18,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 15:38:18,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:18,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:18,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:18,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:38:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:18,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:38:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:18,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:38:18,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933548903] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:18,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:18,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-13 15:38:18,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014520043] [2022-12-13 15:38:18,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:18,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 15:38:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 15:38:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:38:18,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:18,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 158 transitions, 2639 flow. Second operand has 18 states, 18 states have (on average 58.72222222222222) internal successors, (1057), 18 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 15:38:18,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:18,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:18,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:18,915 INFO L130 PetriNetUnfolder]: 716/1307 cut-off events. [2022-12-13 15:38:18,915 INFO L131 PetriNetUnfolder]: For 73107/73107 co-relation queries the response was YES. [2022-12-13 15:38:18,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11789 conditions, 1307 events. 716/1307 cut-off events. For 73107/73107 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6589 event pairs, 46 based on Foata normal form. 20/1327 useless extension candidates. Maximal degree in co-relation 11718. Up to 430 conditions per place. [2022-12-13 15:38:18,925 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 71 selfloop transitions, 145 changer transitions 38/254 dead transitions. [2022-12-13 15:38:18,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 254 transitions, 5001 flow [2022-12-13 15:38:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 15:38:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 15:38:18,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1368 transitions. [2022-12-13 15:38:18,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47107438016528924 [2022-12-13 15:38:18,927 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1368 transitions. [2022-12-13 15:38:18,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1368 transitions. [2022-12-13 15:38:18,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:18,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1368 transitions. [2022-12-13 15:38:18,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.18181818181818) internal successors, (1368), 22 states have internal predecessors, (1368), 0 states have call successors, (0), 0 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 15:38:18,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 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 15:38:18,932 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 132.0) internal successors, (3036), 23 states have internal predecessors, (3036), 0 states have call successors, (0), 0 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 15:38:18,932 INFO L175 Difference]: Start difference. First operand has 153 places, 158 transitions, 2639 flow. Second operand 22 states and 1368 transitions. [2022-12-13 15:38:18,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 254 transitions, 5001 flow [2022-12-13 15:38:19,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 254 transitions, 3818 flow, removed 562 selfloop flow, removed 11 redundant places. [2022-12-13 15:38:19,090 INFO L231 Difference]: Finished difference. Result has 171 places, 188 transitions, 3035 flow [2022-12-13 15:38:19,090 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3035, PETRI_PLACES=171, PETRI_TRANSITIONS=188} [2022-12-13 15:38:19,091 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 153 predicate places. [2022-12-13 15:38:19,091 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 188 transitions, 3035 flow [2022-12-13 15:38:19,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 58.72222222222222) internal successors, (1057), 18 states have internal predecessors, (1057), 0 states have call successors, (0), 0 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 15:38:19,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:19,092 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:19,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:38:19,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:38:19,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -670002905, now seen corresponding path program 8 times [2022-12-13 15:38:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:19,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667505338] [2022-12-13 15:38:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:19,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667505338] [2022-12-13 15:38:19,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667505338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508388593] [2022-12-13 15:38:19,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:38:19,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:19,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:19,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:38:19,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:38:19,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:19,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:38:19,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:19,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:19,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508388593] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:19,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:19,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2022-12-13 15:38:19,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001091069] [2022-12-13 15:38:19,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:19,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:38:19,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:19,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:38:19,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:38:19,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:19,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 188 transitions, 3035 flow. Second operand has 16 states, 16 states have (on average 58.375) internal successors, (934), 16 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 15:38:19,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:19,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:19,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:20,232 INFO L130 PetriNetUnfolder]: 732/1335 cut-off events. [2022-12-13 15:38:20,232 INFO L131 PetriNetUnfolder]: For 55241/55241 co-relation queries the response was YES. [2022-12-13 15:38:20,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11038 conditions, 1335 events. 732/1335 cut-off events. For 55241/55241 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6741 event pairs, 40 based on Foata normal form. 4/1339 useless extension candidates. Maximal degree in co-relation 10961. Up to 430 conditions per place. [2022-12-13 15:38:20,244 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 67 selfloop transitions, 149 changer transitions 34/250 dead transitions. [2022-12-13 15:38:20,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 250 transitions, 4449 flow [2022-12-13 15:38:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:38:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:38:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1238 transitions. [2022-12-13 15:38:20,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46893939393939393 [2022-12-13 15:38:20,247 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1238 transitions. [2022-12-13 15:38:20,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1238 transitions. [2022-12-13 15:38:20,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:20,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1238 transitions. [2022-12-13 15:38:20,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 61.9) internal successors, (1238), 20 states have internal predecessors, (1238), 0 states have call successors, (0), 0 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 15:38:20,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 132.0) internal successors, (2772), 21 states have internal predecessors, (2772), 0 states have call successors, (0), 0 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 15:38:20,254 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 132.0) internal successors, (2772), 21 states have internal predecessors, (2772), 0 states have call successors, (0), 0 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 15:38:20,254 INFO L175 Difference]: Start difference. First operand has 171 places, 188 transitions, 3035 flow. Second operand 20 states and 1238 transitions. [2022-12-13 15:38:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 250 transitions, 4449 flow [2022-12-13 15:38:20,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 250 transitions, 4181 flow, removed 107 selfloop flow, removed 8 redundant places. [2022-12-13 15:38:20,404 INFO L231 Difference]: Finished difference. Result has 184 places, 192 transitions, 3207 flow [2022-12-13 15:38:20,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3207, PETRI_PLACES=184, PETRI_TRANSITIONS=192} [2022-12-13 15:38:20,405 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 166 predicate places. [2022-12-13 15:38:20,405 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 192 transitions, 3207 flow [2022-12-13 15:38:20,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.375) internal successors, (934), 16 states have internal predecessors, (934), 0 states have call successors, (0), 0 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 15:38:20,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:20,405 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:20,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:38:20,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:20,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash -682104500, now seen corresponding path program 9 times [2022-12-13 15:38:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:20,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166540250] [2022-12-13 15:38:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:38:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:38:20,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166540250] [2022-12-13 15:38:20,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166540250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:38:20,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892463928] [2022-12-13 15:38:20,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:38:20,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:38:20,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:38:20,733 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:38:20,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:38:20,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 15:38:20,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:38:20,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:38:20,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:38:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:20,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:38:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:38:20,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892463928] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:38:20,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:38:20,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-12-13 15:38:20,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958163401] [2022-12-13 15:38:20,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:38:20,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 15:38:20,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:38:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 15:38:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:38:20,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 132 [2022-12-13 15:38:20,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 192 transitions, 3207 flow. Second operand has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 0 states have call successors, (0), 0 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 15:38:20,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:38:20,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 132 [2022-12-13 15:38:20,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:38:21,682 INFO L130 PetriNetUnfolder]: 752/1371 cut-off events. [2022-12-13 15:38:21,682 INFO L131 PetriNetUnfolder]: For 66133/66133 co-relation queries the response was YES. [2022-12-13 15:38:21,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 1371 events. 752/1371 cut-off events. For 66133/66133 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6972 event pairs, 25 based on Foata normal form. 16/1387 useless extension candidates. Maximal degree in co-relation 11607. Up to 450 conditions per place. [2022-12-13 15:38:21,691 INFO L137 encePairwiseOnDemand]: 127/132 looper letters, 68 selfloop transitions, 172 changer transitions 48/288 dead transitions. [2022-12-13 15:38:21,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 288 transitions, 5213 flow [2022-12-13 15:38:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 15:38:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 15:38:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1675 transitions. [2022-12-13 15:38:21,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46997755331088664 [2022-12-13 15:38:21,693 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1675 transitions. [2022-12-13 15:38:21,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1675 transitions. [2022-12-13 15:38:21,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:38:21,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1675 transitions. [2022-12-13 15:38:21,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 62.03703703703704) internal successors, (1675), 27 states have internal predecessors, (1675), 0 states have call successors, (0), 0 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 15:38:21,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 132.0) internal successors, (3696), 28 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 15:38:21,697 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 132.0) internal successors, (3696), 28 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 15:38:21,697 INFO L175 Difference]: Start difference. First operand has 184 places, 192 transitions, 3207 flow. Second operand 27 states and 1675 transitions. [2022-12-13 15:38:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 288 transitions, 5213 flow [2022-12-13 15:38:21,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 288 transitions, 4876 flow, removed 46 selfloop flow, removed 16 redundant places. [2022-12-13 15:38:21,829 INFO L231 Difference]: Finished difference. Result has 200 places, 201 transitions, 3629 flow [2022-12-13 15:38:21,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3629, PETRI_PLACES=200, PETRI_TRANSITIONS=201} [2022-12-13 15:38:21,829 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 182 predicate places. [2022-12-13 15:38:21,829 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 201 transitions, 3629 flow [2022-12-13 15:38:21,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 0 states have call successors, (0), 0 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 15:38:21,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:38:21,830 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:38:21,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:38:22,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 15:38:22,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 15:38:22,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:38:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1998813712, now seen corresponding path program 10 times [2022-12-13 15:38:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:38:22,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083846309] [2022-12-13 15:38:22,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:38:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:38:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:38:22,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:38:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:38:22,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:38:22,068 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:38:22,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-13 15:38:22,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-13 15:38:22,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 15:38:22,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:38:22,070 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1] [2022-12-13 15:38:22,074 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:38:22,074 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:38:22,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:38:22 BasicIcfg [2022-12-13 15:38:22,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:38:22,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:38:22,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:38:22,097 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:38:22,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:38:10" (3/4) ... [2022-12-13 15:38:22,098 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 15:38:22,129 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:38:22,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:38:22,130 INFO L158 Benchmark]: Toolchain (without parser) took 11950.71ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 107.5MB in the beginning and 146.8MB in the end (delta: -39.3MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-12-13 15:38:22,130 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:38:22,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.52ms. Allocated memory is still 148.9MB. Free memory was 107.4MB in the beginning and 87.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 15:38:22,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.92ms. Allocated memory is still 148.9MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:38:22,131 INFO L158 Benchmark]: Boogie Preprocessor took 22.08ms. Allocated memory is still 148.9MB. Free memory was 85.4MB in the beginning and 83.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:38:22,131 INFO L158 Benchmark]: RCFGBuilder took 270.87ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 71.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 15:38:22,131 INFO L158 Benchmark]: TraceAbstraction took 11204.44ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 70.8MB in the beginning and 152.1MB in the end (delta: -81.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:38:22,131 INFO L158 Benchmark]: Witness Printer took 32.37ms. Allocated memory is still 218.1MB. Free memory was 152.1MB in the beginning and 146.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 15:38:22,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 148.9MB. Free memory is still 119.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.52ms. Allocated memory is still 148.9MB. Free memory was 107.4MB in the beginning and 87.0MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.92ms. Allocated memory is still 148.9MB. Free memory was 87.0MB in the beginning and 85.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.08ms. Allocated memory is still 148.9MB. Free memory was 85.4MB in the beginning and 83.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.87ms. Allocated memory is still 148.9MB. Free memory was 83.8MB in the beginning and 71.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11204.44ms. Allocated memory was 148.9MB in the beginning and 218.1MB in the end (delta: 69.2MB). Free memory was 70.8MB in the beginning and 152.1MB in the end (delta: -81.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.37ms. Allocated memory is still 218.1MB. Free memory was 152.1MB in the beginning and 146.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 70 PlacesBefore, 18 PlacesAfterwards, 68 TransitionsBefore, 14 TransitionsAfterwards, 1122 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1071 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 912, independent: 879, independent conditional: 0, independent unconditional: 879, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 601, independent: 588, independent conditional: 0, independent unconditional: 588, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 912, independent: 291, independent conditional: 0, independent unconditional: 291, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 601, unknown conditional: 0, unknown unconditional: 601] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L719] 0 int condJ = j >= (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, condJ=1, i=15, id1={5:0}, id2={3:0}, j=16, k=5, k=5] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.1s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2061 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1965 mSDsluCounter, 476 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 431 mSDsCounter, 268 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2377 IncrementalHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 268 mSolverCounterUnsat, 45 mSDtfsCounter, 2377 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 124 SyntacticMatches, 16 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3629occurred in iteration=12, InterpolantAutomatonStates: 182, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 1321 SizeOfPredicates, 42 NumberOfNonLiveVariables, 1000 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 12/189 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 15:38:22,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10f4bfbd-5d73-49db-a888-cfac7ab8c1eb/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE