./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/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_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- 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 15:39:15,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:39:15,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:39:15,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:39:15,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:39:15,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:39:15,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:39:15,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:39:15,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:39:15,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:39:15,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:39:15,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:39:15,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:39:15,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:39:15,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:39:15,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:39:15,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:39:15,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:39:15,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:39:15,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:39:15,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:39:15,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:39:15,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:39:15,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:39:15,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:39:15,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:39:15,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:39:15,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:39:15,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:39:15,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:39:15,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:39:15,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:39:15,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:39:15,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:39:15,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:39:15,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:39:15,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:39:15,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:39:15,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:39:15,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:39:15,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:39:15,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:39:15,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:39:15,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:39:15,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:39:15,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:39:15,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:39:15,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:39:15,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:39:15,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:39:15,672 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:39:15,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:39:15,672 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:39:15,672 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:39:15,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:39:15,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:39:15,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:39:15,673 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:39:15,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:39:15,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:39:15,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:39:15,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:39:15,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:39:15,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:39:15,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:39:15,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:39:15,675 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:39:15,675 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_f886a3f1-6dc9-4154-a31b-ce04537e2196/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-12-13 15:39:15,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:39:15,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:39:15,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:39:15,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:39:15,895 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:39:15,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-12-13 15:39:18,515 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:39:18,737 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:39:18,738 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-12-13 15:39:18,751 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/data/92ac3fa30/29ef8c14c2934d6db45e332ec7198a59/FLAG441d010ed [2022-12-13 15:39:18,763 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/data/92ac3fa30/29ef8c14c2934d6db45e332ec7198a59 [2022-12-13 15:39:18,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:39:18,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:39:18,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:39:18,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:39:18,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:39:18,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:39:18" (1/1) ... [2022-12-13 15:39:18,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403a9c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:18, skipping insertion in model container [2022-12-13 15:39:18,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:39:18" (1/1) ... [2022-12-13 15:39:18,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:39:18,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:39:18,954 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_f886a3f1-6dc9-4154-a31b-ce04537e2196/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-12-13 15:39:19,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:39:19,309 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:39:19,317 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_f886a3f1-6dc9-4154-a31b-ce04537e2196/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-12-13 15:39:19,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:39:19,411 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:39:19,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19 WrapperNode [2022-12-13 15:39:19,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:39:19,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:39:19,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:39:19,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:39:19,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,452 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-12-13 15:39:19,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:39:19,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:39:19,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:39:19,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:39:19,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:39:19,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:39:19,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:39:19,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:39:19,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (1/1) ... [2022-12-13 15:39:19,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:39:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:19,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:39:19,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-12-13 15:39:19,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:39:19,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:39:19,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:39:19,543 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 15:39:19,647 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:39:19,648 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:39:19,788 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:39:19,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:39:19,794 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:39:19,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:39:19 BoogieIcfgContainer [2022-12-13 15:39:19,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:39:19,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:39:19,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:39:19,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:39:19,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:39:18" (1/3) ... [2022-12-13 15:39:19,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169535e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:39:19, skipping insertion in model container [2022-12-13 15:39:19,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:39:19" (2/3) ... [2022-12-13 15:39:19,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@169535e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:39:19, skipping insertion in model container [2022-12-13 15:39:19,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:39:19" (3/3) ... [2022-12-13 15:39:19,802 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-12-13 15:39:19,810 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:39:19,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:39:19,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 15:39:19,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:39:19,868 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 15:39:19,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 107 transitions, 222 flow [2022-12-13 15:39:19,934 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2022-12-13 15:39:19,934 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:39:19,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 7/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 15:39:19,940 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 107 transitions, 222 flow [2022-12-13 15:39:19,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 85 transitions, 173 flow [2022-12-13 15:39:19,948 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:39:19,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 85 transitions, 173 flow [2022-12-13 15:39:19,962 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 85 transitions, 173 flow [2022-12-13 15:39:19,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 85 transitions, 173 flow [2022-12-13 15:39:19,986 INFO L130 PetriNetUnfolder]: 5/85 cut-off events. [2022-12-13 15:39:19,986 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:39:19,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 5/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 15:39:19,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2022-12-13 15:39:21,492 INFO L134 LiptonReduction]: Checked pairs total: 3174 [2022-12-13 15:39:21,493 INFO L136 LiptonReduction]: Total number of compositions: 75 [2022-12-13 15:39:21,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:39:21,513 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;@492aa0f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:39:21,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-12-13 15:39:21,517 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 15:39:21,517 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:39:21,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:21,517 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:39:21,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 360340923, now seen corresponding path program 1 times [2022-12-13 15:39:21,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:21,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691901766] [2022-12-13 15:39:21,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:21,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:21,717 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 15:39:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:21,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691901766] [2022-12-13 15:39:21,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691901766] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:21,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:21,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:39:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330436607] [2022-12-13 15:39:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:21,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:21,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:21,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 182 [2022-12-13 15:39:21,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:21,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:21,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 182 [2022-12-13 15:39:21,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:21,831 INFO L130 PetriNetUnfolder]: 135/284 cut-off events. [2022-12-13 15:39:21,831 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:39:21,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 284 events. 135/284 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1188 event pairs, 40 based on Foata normal form. 6/172 useless extension candidates. Maximal degree in co-relation 556. Up to 189 conditions per place. [2022-12-13 15:39:21,833 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 35 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-12-13 15:39:21,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 41 transitions, 165 flow [2022-12-13 15:39:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2022-12-13 15:39:21,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-13 15:39:21,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2022-12-13 15:39:21,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2022-12-13 15:39:21,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:21,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2022-12-13 15:39:21,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:21,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:21,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:21,853 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 49 flow. Second operand 3 states and 315 transitions. [2022-12-13 15:39:21,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 41 transitions, 165 flow [2022-12-13 15:39:21,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:21,856 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 88 flow [2022-12-13 15:39:21,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2022-12-13 15:39:21,860 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2022-12-13 15:39:21,861 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 88 flow [2022-12-13 15:39:21,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:21,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:21,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:39:21,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:39:21,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 360340922, now seen corresponding path program 1 times [2022-12-13 15:39:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852167071] [2022-12-13 15:39:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:21,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:21,912 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 15:39:21,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:21,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852167071] [2022-12-13 15:39:21,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852167071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:21,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:21,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:39:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521426164] [2022-12-13 15:39:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:21,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:21,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:21,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-12-13 15:39:21,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:21,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:21,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-12-13 15:39:21,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:21,998 INFO L130 PetriNetUnfolder]: 154/333 cut-off events. [2022-12-13 15:39:21,998 INFO L131 PetriNetUnfolder]: For 92/95 co-relation queries the response was YES. [2022-12-13 15:39:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 333 events. 154/333 cut-off events. For 92/95 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1465 event pairs, 66 based on Foata normal form. 24/257 useless extension candidates. Maximal degree in co-relation 757. Up to 167 conditions per place. [2022-12-13 15:39:22,000 INFO L137 encePairwiseOnDemand]: 176/182 looper letters, 36 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2022-12-13 15:39:22,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 214 flow [2022-12-13 15:39:22,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2022-12-13 15:39:22,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-13 15:39:22,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2022-12-13 15:39:22,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2022-12-13 15:39:22,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:22,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2022-12-13 15:39:22,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,007 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 88 flow. Second operand 3 states and 315 transitions. [2022-12-13 15:39:22,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 214 flow [2022-12-13 15:39:22,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:39:22,009 INFO L231 Difference]: Finished difference. Result has 30 places, 31 transitions, 130 flow [2022-12-13 15:39:22,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=30, PETRI_TRANSITIONS=31} [2022-12-13 15:39:22,010 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2022-12-13 15:39:22,010 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 31 transitions, 130 flow [2022-12-13 15:39:22,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:22,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:39:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:39:22,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1604712508, now seen corresponding path program 1 times [2022-12-13 15:39:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756747636] [2022-12-13 15:39:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:22,076 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 15:39:22,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:22,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756747636] [2022-12-13 15:39:22,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756747636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:22,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:22,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:39:22,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885863516] [2022-12-13 15:39:22,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:22,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:22,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:22,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:22,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:22,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2022-12-13 15:39:22,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 31 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:22,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2022-12-13 15:39:22,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:22,152 INFO L130 PetriNetUnfolder]: 139/311 cut-off events. [2022-12-13 15:39:22,152 INFO L131 PetriNetUnfolder]: For 135/150 co-relation queries the response was YES. [2022-12-13 15:39:22,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 311 events. 139/311 cut-off events. For 135/150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1463 event pairs, 50 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 779. Up to 194 conditions per place. [2022-12-13 15:39:22,155 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 37 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2022-12-13 15:39:22,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 248 flow [2022-12-13 15:39:22,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2022-12-13 15:39:22,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-13 15:39:22,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2022-12-13 15:39:22,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2022-12-13 15:39:22,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:22,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2022-12-13 15:39:22,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,160 INFO L175 Difference]: Start difference. First operand has 30 places, 31 transitions, 130 flow. Second operand 3 states and 315 transitions. [2022-12-13 15:39:22,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 248 flow [2022-12-13 15:39:22,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:39:22,163 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 136 flow [2022-12-13 15:39:22,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2022-12-13 15:39:22,164 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2022-12-13 15:39:22,164 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 136 flow [2022-12-13 15:39:22,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:22,165 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:39:22,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:39:22,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1763800209, now seen corresponding path program 1 times [2022-12-13 15:39:22,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:22,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073580723] [2022-12-13 15:39:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:22,213 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 15:39:22,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:22,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073580723] [2022-12-13 15:39:22,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073580723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:22,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:22,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:39:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419026901] [2022-12-13 15:39:22,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:22,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:22,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:22,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:22,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-12-13 15:39:22,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:22,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-12-13 15:39:22,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:22,313 INFO L130 PetriNetUnfolder]: 186/470 cut-off events. [2022-12-13 15:39:22,313 INFO L131 PetriNetUnfolder]: For 233/233 co-relation queries the response was YES. [2022-12-13 15:39:22,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 470 events. 186/470 cut-off events. For 233/233 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2435 event pairs, 80 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 1224. Up to 266 conditions per place. [2022-12-13 15:39:22,316 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 46 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-12-13 15:39:22,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 53 transitions, 328 flow [2022-12-13 15:39:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:22,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2022-12-13 15:39:22,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5732600732600732 [2022-12-13 15:39:22,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2022-12-13 15:39:22,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2022-12-13 15:39:22,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:22,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2022-12-13 15:39:22,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,322 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 136 flow. Second operand 3 states and 313 transitions. [2022-12-13 15:39:22,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 53 transitions, 328 flow [2022-12-13 15:39:22,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 53 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:22,325 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 150 flow [2022-12-13 15:39:22,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2022-12-13 15:39:22,325 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 8 predicate places. [2022-12-13 15:39:22,326 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 150 flow [2022-12-13 15:39:22,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:22,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:39:22,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:39:22,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:22,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash -235442367, now seen corresponding path program 1 times [2022-12-13 15:39:22,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:22,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783588520] [2022-12-13 15:39:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:22,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:22,402 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 15:39:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:22,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783588520] [2022-12-13 15:39:22,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783588520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:22,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:22,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:39:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39552404] [2022-12-13 15:39:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:22,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:22,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:22,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-12-13 15:39:22,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:22,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-12-13 15:39:22,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:22,469 INFO L130 PetriNetUnfolder]: 64/219 cut-off events. [2022-12-13 15:39:22,469 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-12-13 15:39:22,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 219 events. 64/219 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 930 event pairs, 21 based on Foata normal form. 27/216 useless extension candidates. Maximal degree in co-relation 609. Up to 111 conditions per place. [2022-12-13 15:39:22,471 INFO L137 encePairwiseOnDemand]: 174/182 looper letters, 19 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2022-12-13 15:39:22,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 207 flow [2022-12-13 15:39:22,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:22,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2022-12-13 15:39:22,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2022-12-13 15:39:22,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2022-12-13 15:39:22,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2022-12-13 15:39:22,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:22,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2022-12-13 15:39:22,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,476 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 150 flow. Second operand 3 states and 302 transitions. [2022-12-13 15:39:22,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 207 flow [2022-12-13 15:39:22,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:22,478 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 150 flow [2022-12-13 15:39:22,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2022-12-13 15:39:22,478 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 9 predicate places. [2022-12-13 15:39:22,478 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 150 flow [2022-12-13 15:39:22,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:22,479 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:39:22,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:39:22,479 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash -235447912, now seen corresponding path program 1 times [2022-12-13 15:39:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:22,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134858238] [2022-12-13 15:39:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:22,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:22,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134858238] [2022-12-13 15:39:22,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134858238] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:22,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704466526] [2022-12-13 15:39:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:22,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:22,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:22,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:22,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:39:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:22,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:39:22,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:22,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:39:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:22,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704466526] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:39:22,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:39:22,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 15:39:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920550655] [2022-12-13 15:39:22,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:39:22,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:39:22,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:39:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:39:22,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-12-13 15:39:22,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 150 flow. Second operand has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:22,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-12-13 15:39:22,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:22,966 INFO L130 PetriNetUnfolder]: 216/551 cut-off events. [2022-12-13 15:39:22,967 INFO L131 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2022-12-13 15:39:22,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 551 events. 216/551 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2622 event pairs, 31 based on Foata normal form. 30/523 useless extension candidates. Maximal degree in co-relation 1725. Up to 160 conditions per place. [2022-12-13 15:39:22,972 INFO L137 encePairwiseOnDemand]: 173/182 looper letters, 97 selfloop transitions, 36 changer transitions 0/133 dead transitions. [2022-12-13 15:39:22,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 133 transitions, 850 flow [2022-12-13 15:39:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:39:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:39:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1157 transitions. [2022-12-13 15:39:22,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2022-12-13 15:39:22,978 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1157 transitions. [2022-12-13 15:39:22,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1157 transitions. [2022-12-13 15:39:22,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:22,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1157 transitions. [2022-12-13 15:39:22,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.41666666666667) internal successors, (1157), 12 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 182.0) internal successors, (2366), 13 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,998 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 182.0) internal successors, (2366), 13 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:22,999 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 150 flow. Second operand 12 states and 1157 transitions. [2022-12-13 15:39:22,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 133 transitions, 850 flow [2022-12-13 15:39:23,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 133 transitions, 805 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:23,004 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 437 flow [2022-12-13 15:39:23,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=437, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2022-12-13 15:39:23,005 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2022-12-13 15:39:23,005 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 437 flow [2022-12-13 15:39:23,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,006 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:23,006 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:39:23,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:39:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:23,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:23,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash -235447913, now seen corresponding path program 1 times [2022-12-13 15:39:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:23,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911764294] [2022-12-13 15:39:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:23,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:23,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911764294] [2022-12-13 15:39:23,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911764294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:23,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:23,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:39:23,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830496028] [2022-12-13 15:39:23,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:23,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:39:23,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:39:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:39:23,385 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 182 [2022-12-13 15:39:23,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:23,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 182 [2022-12-13 15:39:23,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:23,484 INFO L130 PetriNetUnfolder]: 162/479 cut-off events. [2022-12-13 15:39:23,484 INFO L131 PetriNetUnfolder]: For 840/840 co-relation queries the response was YES. [2022-12-13 15:39:23,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 479 events. 162/479 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2392 event pairs, 69 based on Foata normal form. 48/479 useless extension candidates. Maximal degree in co-relation 1643. Up to 321 conditions per place. [2022-12-13 15:39:23,489 INFO L137 encePairwiseOnDemand]: 177/182 looper letters, 42 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2022-12-13 15:39:23,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 473 flow [2022-12-13 15:39:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:39:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:39:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2022-12-13 15:39:23,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.521978021978022 [2022-12-13 15:39:23,490 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2022-12-13 15:39:23,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2022-12-13 15:39:23,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:23,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2022-12-13 15:39:23,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 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 15:39:23,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,492 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 437 flow. Second operand 4 states and 380 transitions. [2022-12-13 15:39:23,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 473 flow [2022-12-13 15:39:23,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 446 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:23,496 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 337 flow [2022-12-13 15:39:23,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=337, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2022-12-13 15:39:23,496 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2022-12-13 15:39:23,496 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 337 flow [2022-12-13 15:39:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:23,497 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:39:23,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:39:23,497 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:23,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1367834721, now seen corresponding path program 1 times [2022-12-13 15:39:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:23,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047975142] [2022-12-13 15:39:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:23,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:23,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047975142] [2022-12-13 15:39:23,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047975142] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:23,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795142617] [2022-12-13 15:39:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:23,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:23,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:23,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:23,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:39:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:23,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:39:23,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:23,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:39:23,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795142617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:23,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:39:23,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 15:39:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555849375] [2022-12-13 15:39:23,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:23,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:39:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:39:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:39:23,616 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2022-12-13 15:39:23,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:23,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2022-12-13 15:39:23,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:23,701 INFO L130 PetriNetUnfolder]: 147/431 cut-off events. [2022-12-13 15:39:23,701 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2022-12-13 15:39:23,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1509 conditions, 431 events. 147/431 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2107 event pairs, 37 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 1482. Up to 242 conditions per place. [2022-12-13 15:39:23,703 INFO L137 encePairwiseOnDemand]: 179/182 looper letters, 52 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-12-13 15:39:23,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 509 flow [2022-12-13 15:39:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:39:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:39:23,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 409 transitions. [2022-12-13 15:39:23,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5618131868131868 [2022-12-13 15:39:23,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 409 transitions. [2022-12-13 15:39:23,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 409 transitions. [2022-12-13 15:39:23,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:23,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 409 transitions. [2022-12-13 15:39:23,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,706 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,706 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 337 flow. Second operand 4 states and 409 transitions. [2022-12-13 15:39:23,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 509 flow [2022-12-13 15:39:23,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 502 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:23,710 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 329 flow [2022-12-13 15:39:23,710 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-12-13 15:39:23,711 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2022-12-13 15:39:23,711 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 329 flow [2022-12-13 15:39:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,711 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:23,711 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:39:23,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:39:23,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 15:39:23,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1367834720, now seen corresponding path program 1 times [2022-12-13 15:39:23,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:23,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678095333] [2022-12-13 15:39:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:23,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:39:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678095333] [2022-12-13 15:39:23,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678095333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:23,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:23,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:39:23,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736533173] [2022-12-13 15:39:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:23,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:23,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-12-13 15:39:23,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:23,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:23,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-12-13 15:39:23,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:24,009 INFO L130 PetriNetUnfolder]: 134/381 cut-off events. [2022-12-13 15:39:24,009 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2022-12-13 15:39:24,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 381 events. 134/381 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1829 event pairs, 38 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1329. Up to 198 conditions per place. [2022-12-13 15:39:24,011 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 41 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2022-12-13 15:39:24,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 450 flow [2022-12-13 15:39:24,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2022-12-13 15:39:24,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2022-12-13 15:39:24,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2022-12-13 15:39:24,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2022-12-13 15:39:24,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:24,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2022-12-13 15:39:24,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,014 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 329 flow. Second operand 3 states and 301 transitions. [2022-12-13 15:39:24,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 450 flow [2022-12-13 15:39:24,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:39:24,017 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 338 flow [2022-12-13 15:39:24,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2022-12-13 15:39:24,018 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 28 predicate places. [2022-12-13 15:39:24,018 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 338 flow [2022-12-13 15:39:24,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:24,018 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:39:24,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:39:24,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:24,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:24,019 INFO L85 PathProgramCache]: Analyzing trace with hash 591193809, now seen corresponding path program 1 times [2022-12-13 15:39:24,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:24,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831368203] [2022-12-13 15:39:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:39:24,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:24,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831368203] [2022-12-13 15:39:24,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831368203] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:24,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:39:24,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:39:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317536867] [2022-12-13 15:39:24,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:24,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:39:24,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:24,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:39:24,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:39:24,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 182 [2022-12-13 15:39:24,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:24,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 182 [2022-12-13 15:39:24,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:24,127 INFO L130 PetriNetUnfolder]: 125/365 cut-off events. [2022-12-13 15:39:24,127 INFO L131 PetriNetUnfolder]: For 653/653 co-relation queries the response was YES. [2022-12-13 15:39:24,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 365 events. 125/365 cut-off events. For 653/653 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1645 event pairs, 38 based on Foata normal form. 0/353 useless extension candidates. Maximal degree in co-relation 1341. Up to 158 conditions per place. [2022-12-13 15:39:24,131 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 56 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2022-12-13 15:39:24,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 634 flow [2022-12-13 15:39:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:39:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:39:24,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2022-12-13 15:39:24,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5439560439560439 [2022-12-13 15:39:24,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2022-12-13 15:39:24,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2022-12-13 15:39:24,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:24,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2022-12-13 15:39:24,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,137 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 338 flow. Second operand 3 states and 297 transitions. [2022-12-13 15:39:24,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 634 flow [2022-12-13 15:39:24,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 72 transitions, 626 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:24,143 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 346 flow [2022-12-13 15:39:24,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2022-12-13 15:39:24,144 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 29 predicate places. [2022-12-13 15:39:24,144 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 346 flow [2022-12-13 15:39:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:24,144 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:39:24,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:39:24,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 591193810, now seen corresponding path program 1 times [2022-12-13 15:39:24,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:24,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479776591] [2022-12-13 15:39:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:24,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:24,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:24,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:24,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479776591] [2022-12-13 15:39:24,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479776591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:24,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990376657] [2022-12-13 15:39:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:24,182 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:24,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:39:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:24,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:39:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:24,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:39:24,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990376657] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:39:24,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:39:24,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 15:39:24,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956743959] [2022-12-13 15:39:24,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:39:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:39:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:39:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:39:24,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-12-13 15:39:24,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:24,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-12-13 15:39:24,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:24,318 INFO L130 PetriNetUnfolder]: 112/323 cut-off events. [2022-12-13 15:39:24,318 INFO L131 PetriNetUnfolder]: For 655/655 co-relation queries the response was YES. [2022-12-13 15:39:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1247 conditions, 323 events. 112/323 cut-off events. For 655/655 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1329 event pairs, 24 based on Foata normal form. 12/334 useless extension candidates. Maximal degree in co-relation 1219. Up to 189 conditions per place. [2022-12-13 15:39:24,326 INFO L137 encePairwiseOnDemand]: 179/182 looper letters, 59 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 15:39:24,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 634 flow [2022-12-13 15:39:24,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:39:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:39:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 400 transitions. [2022-12-13 15:39:24,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5494505494505495 [2022-12-13 15:39:24,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 400 transitions. [2022-12-13 15:39:24,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 400 transitions. [2022-12-13 15:39:24,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:24,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 400 transitions. [2022-12-13 15:39:24,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,329 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,329 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 346 flow. Second operand 4 states and 400 transitions. [2022-12-13 15:39:24,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 634 flow [2022-12-13 15:39:24,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:39:24,332 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 341 flow [2022-12-13 15:39:24,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2022-12-13 15:39:24,333 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 30 predicate places. [2022-12-13 15:39:24,333 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 341 flow [2022-12-13 15:39:24,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:24,333 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1] [2022-12-13 15:39:24,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:39:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:24,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -972100142, now seen corresponding path program 2 times [2022-12-13 15:39:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:24,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662284342] [2022-12-13 15:39:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:24,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:24,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662284342] [2022-12-13 15:39:24,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662284342] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938936611] [2022-12-13 15:39:24,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:39:24,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:24,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:24,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:39:24,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:39:24,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:39:24,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:39:24,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:24,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:39:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:24,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938936611] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:39:24,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:39:24,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 15:39:24,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267043912] [2022-12-13 15:39:24,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:39:24,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:39:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:24,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:39:24,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:39:24,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-12-13 15:39:24,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 341 flow. Second operand has 16 states, 16 states have (on average 87.125) internal successors, (1394), 16 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:24,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:24,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-12-13 15:39:24,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:25,617 INFO L130 PetriNetUnfolder]: 458/1169 cut-off events. [2022-12-13 15:39:25,617 INFO L131 PetriNetUnfolder]: For 3199/3199 co-relation queries the response was YES. [2022-12-13 15:39:25,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1169 events. 458/1169 cut-off events. For 3199/3199 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5758 event pairs, 80 based on Foata normal form. 112/1281 useless extension candidates. Maximal degree in co-relation 4354. Up to 252 conditions per place. [2022-12-13 15:39:25,625 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 303 selfloop transitions, 90 changer transitions 0/393 dead transitions. [2022-12-13 15:39:25,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 393 transitions, 3058 flow [2022-12-13 15:39:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 15:39:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-12-13 15:39:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3721 transitions. [2022-12-13 15:39:25,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5242321780783319 [2022-12-13 15:39:25,631 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3721 transitions. [2022-12-13 15:39:25,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3721 transitions. [2022-12-13 15:39:25,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:25,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3721 transitions. [2022-12-13 15:39:25,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 95.41025641025641) internal successors, (3721), 39 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:25,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 182.0) internal successors, (7280), 40 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:25,646 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 182.0) internal successors, (7280), 40 states have internal predecessors, (7280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:25,646 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 341 flow. Second operand 39 states and 3721 transitions. [2022-12-13 15:39:25,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 393 transitions, 3058 flow [2022-12-13 15:39:25,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 393 transitions, 3033 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:39:25,655 INFO L231 Difference]: Finished difference. Result has 120 places, 119 transitions, 1275 flow [2022-12-13 15:39:25,655 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1275, PETRI_PLACES=120, PETRI_TRANSITIONS=119} [2022-12-13 15:39:25,656 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 95 predicate places. [2022-12-13 15:39:25,656 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 119 transitions, 1275 flow [2022-12-13 15:39:25,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.125) internal successors, (1394), 16 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:25,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:25,656 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1] [2022-12-13 15:39:25,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:39:25,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:25,858 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:25,859 INFO L85 PathProgramCache]: Analyzing trace with hash -71333818, now seen corresponding path program 3 times [2022-12-13 15:39:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:25,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537866817] [2022-12-13 15:39:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:25,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:26,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537866817] [2022-12-13 15:39:26,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537866817] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:26,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23577110] [2022-12-13 15:39:26,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:39:26,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:26,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:26,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:39:26,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-13 15:39:26,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:39:26,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 15:39:26,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:26,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:39:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:26,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23577110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:39:26,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:39:26,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2022-12-13 15:39:26,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780514095] [2022-12-13 15:39:26,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:39:26,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 15:39:26,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:26,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 15:39:26,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-12-13 15:39:26,815 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-12-13 15:39:26,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 119 transitions, 1275 flow. Second operand has 32 states, 32 states have (on average 87.0625) internal successors, (2786), 32 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:26,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:26,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-12-13 15:39:26,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:39:30,240 INFO L130 PetriNetUnfolder]: 1744/4443 cut-off events. [2022-12-13 15:39:30,241 INFO L131 PetriNetUnfolder]: For 95816/95816 co-relation queries the response was YES. [2022-12-13 15:39:30,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19092 conditions, 4443 events. 1744/4443 cut-off events. For 95816/95816 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 27356 event pairs, 253 based on Foata normal form. 480/4923 useless extension candidates. Maximal degree in co-relation 19033. Up to 1062 conditions per place. [2022-12-13 15:39:30,264 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 1093 selfloop transitions, 363 changer transitions 0/1456 dead transitions. [2022-12-13 15:39:30,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1456 transitions, 13768 flow [2022-12-13 15:39:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-12-13 15:39:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2022-12-13 15:39:30,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 13665 transitions. [2022-12-13 15:39:30,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5250518712057174 [2022-12-13 15:39:30,276 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 13665 transitions. [2022-12-13 15:39:30,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 13665 transitions. [2022-12-13 15:39:30,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:39:30,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 13665 transitions. [2022-12-13 15:39:30,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 95.55944055944056) internal successors, (13665), 143 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:30,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 182.0) internal successors, (26208), 144 states have internal predecessors, (26208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:30,353 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 182.0) internal successors, (26208), 144 states have internal predecessors, (26208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:30,353 INFO L175 Difference]: Start difference. First operand has 120 places, 119 transitions, 1275 flow. Second operand 143 states and 13665 transitions. [2022-12-13 15:39:30,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 1456 transitions, 13768 flow [2022-12-13 15:39:30,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 1456 transitions, 13568 flow, removed 92 selfloop flow, removed 5 redundant places. [2022-12-13 15:39:30,525 INFO L231 Difference]: Finished difference. Result has 366 places, 406 transitions, 5864 flow [2022-12-13 15:39:30,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=5864, PETRI_PLACES=366, PETRI_TRANSITIONS=406} [2022-12-13 15:39:30,526 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 341 predicate places. [2022-12-13 15:39:30,526 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 406 transitions, 5864 flow [2022-12-13 15:39:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 87.0625) internal successors, (2786), 32 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:30,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:39:30,527 INFO L209 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1] [2022-12-13 15:39:30,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:39:30,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 15:39:30,729 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:39:30,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:39:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash -797014738, now seen corresponding path program 4 times [2022-12-13 15:39:30,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:39:30,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615870747] [2022-12-13 15:39:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:39:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:39:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:39:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:31,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:39:31,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615870747] [2022-12-13 15:39:31,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615870747] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:39:31,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757384152] [2022-12-13 15:39:31,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 15:39:31,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:39:31,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:39:31,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:39:31,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:39:31,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 15:39:31,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:39:31,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 15:39:31,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:39:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:32,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:39:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:39:32,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757384152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:39:32,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:39:32,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2022-12-13 15:39:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951831404] [2022-12-13 15:39:32,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:39:32,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-13 15:39:32,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:39:32,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-13 15:39:32,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1056, Invalid=2976, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 15:39:32,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 182 [2022-12-13 15:39:32,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 406 transitions, 5864 flow. Second operand has 64 states, 64 states have (on average 87.03125) internal successors, (5570), 64 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:39:32,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:39:32,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 182 [2022-12-13 15:39:32,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:40:04,790 INFO L130 PetriNetUnfolder]: 7076/18039 cut-off events. [2022-12-13 15:40:04,791 INFO L131 PetriNetUnfolder]: For 7096038/7096038 co-relation queries the response was YES. [2022-12-13 15:40:04,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91384 conditions, 18039 events. 7076/18039 cut-off events. For 7096038/7096038 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 135075 event pairs, 908 based on Foata normal form. 2112/20151 useless extension candidates. Maximal degree in co-relation 91215. Up to 4520 conditions per place. [2022-12-13 15:40:05,053 INFO L137 encePairwiseOnDemand]: 175/182 looper letters, 4115 selfloop transitions, 1524 changer transitions 0/5639 dead transitions. [2022-12-13 15:40:05,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 908 places, 5639 transitions, 66801 flow [2022-12-13 15:40:05,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2022-12-13 15:40:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2022-12-13 15:40:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 51889 transitions. [2022-12-13 15:40:05,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5250541355513731 [2022-12-13 15:40:05,119 INFO L72 ComplementDD]: Start complementDD. Operand 543 states and 51889 transitions. [2022-12-13 15:40:05,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 543 states and 51889 transitions. [2022-12-13 15:40:05,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:40:05,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 543 states and 51889 transitions. [2022-12-13 15:40:05,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 544 states, 543 states have (on average 95.55985267034991) internal successors, (51889), 543 states have internal predecessors, (51889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:05,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 544 states, 544 states have (on average 182.0) internal successors, (99008), 544 states have internal predecessors, (99008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:05,254 INFO L81 ComplementDD]: Finished complementDD. Result has 544 states, 544 states have (on average 182.0) internal successors, (99008), 544 states have internal predecessors, (99008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:05,254 INFO L175 Difference]: Start difference. First operand has 366 places, 406 transitions, 5864 flow. Second operand 543 states and 51889 transitions. [2022-12-13 15:40:05,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 908 places, 5639 transitions, 66801 flow [2022-12-13 15:40:16,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 886 places, 5639 transitions, 66029 flow, removed 347 selfloop flow, removed 22 redundant places. [2022-12-13 15:40:16,268 INFO L231 Difference]: Finished difference. Result has 1299 places, 1599 transitions, 29171 flow [2022-12-13 15:40:16,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=5662, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=543, PETRI_FLOW=29171, PETRI_PLACES=1299, PETRI_TRANSITIONS=1599} [2022-12-13 15:40:16,269 INFO L288 CegarLoopForPetriNet]: 25 programPoint places, 1274 predicate places. [2022-12-13 15:40:16,269 INFO L495 AbstractCegarLoop]: Abstraction has has 1299 places, 1599 transitions, 29171 flow [2022-12-13 15:40:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 87.03125) internal successors, (5570), 64 states have internal predecessors, (5570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:16,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:40:16,270 INFO L209 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1] [2022-12-13 15:40:16,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:40:16,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 15:40:16,471 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-12-13 15:40:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:40:16,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1781767934, now seen corresponding path program 5 times [2022-12-13 15:40:16,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:40:16,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825452206] [2022-12-13 15:40:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:40:16,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:40:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:40:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:40:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:40:18,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825452206] [2022-12-13 15:40:18,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825452206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:40:18,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919407136] [2022-12-13 15:40:18,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 15:40:18,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:40:18,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:40:18,895 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:40:18,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f886a3f1-6dc9-4154-a31b-ce04537e2196/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:40:19,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2022-12-13 15:40:19,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:40:19,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-13 15:40:19,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:40:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 1921 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:40:20,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:40:20,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919407136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:40:20,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:40:20,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [63] total 96 [2022-12-13 15:40:20,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692898334] [2022-12-13 15:40:20,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:40:20,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 15:40:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:40:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 15:40:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1615, Invalid=7505, Unknown=0, NotChecked=0, Total=9120 [2022-12-13 15:40:20,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2022-12-13 15:40:20,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1299 places, 1599 transitions, 29171 flow. Second operand has 33 states, 33 states have (on average 95.9090909090909) internal successors, (3165), 33 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:40:20,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:40:20,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2022-12-13 15:40:20,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:41:52,846 INFO L130 PetriNetUnfolder]: 48802/108268 cut-off events. [2022-12-13 15:41:52,846 INFO L131 PetriNetUnfolder]: For 59171072/59171072 co-relation queries the response was YES. [2022-12-13 15:42:01,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813148 conditions, 108268 events. 48802/108268 cut-off events. For 59171072/59171072 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 1059338 event pairs, 6481 based on Foata normal form. 156/108358 useless extension candidates. Maximal degree in co-relation 812565. Up to 29926 conditions per place. [2022-12-13 15:42:01,882 INFO L137 encePairwiseOnDemand]: 178/182 looper letters, 7728 selfloop transitions, 40 changer transitions 1/8521 dead transitions. [2022-12-13 15:42:01,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1321 places, 8521 transitions, 170959 flow [2022-12-13 15:42:01,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 15:42:01,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 15:42:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2350 transitions. [2022-12-13 15:42:01,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5613951266125179 [2022-12-13 15:42:01,885 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2350 transitions. [2022-12-13 15:42:01,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2350 transitions. [2022-12-13 15:42:01,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:42:01,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2350 transitions. [2022-12-13 15:42:01,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.17391304347827) internal successors, (2350), 23 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:42:01,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 182.0) internal successors, (4368), 24 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:42:01,890 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 182.0) internal successors, (4368), 24 states have internal predecessors, (4368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:42:01,890 INFO L175 Difference]: Start difference. First operand has 1299 places, 1599 transitions, 29171 flow. Second operand 23 states and 2350 transitions. [2022-12-13 15:42:01,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1321 places, 8521 transitions, 170959 flow