./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 e04fb08f 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_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/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_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8 --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-e04fb08 [2022-11-16 12:07:35,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:35,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:35,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:35,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:35,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:35,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:35,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:35,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:35,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:35,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:35,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:35,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:35,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:35,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:35,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:35,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:35,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:35,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:35,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:35,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:35,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:35,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:35,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:35,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:35,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:35,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:35,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:35,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:35,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:35,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:35,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:35,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:35,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:35,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:35,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:35,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:35,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:35,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:35,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:35,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:35,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:07:35,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:35,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:35,544 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:35,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:35,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:07:35,545 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:07:35,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:35,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:35,546 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:35,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:35,547 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:35,547 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:07:35,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:35,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:35,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:35,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:07:35,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:07:35,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:07:35,549 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:07:35,549 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:35,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:35,550 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:35,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:07:35,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:35,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:35,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:07:35,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:35,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:35,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:07:35,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:07:35,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:35,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:07:35,558 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:07:35,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:07:35,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:07:35,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2022-11-16 12:07:35,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:35,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:35,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:35,856 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:35,857 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:35,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-16 12:07:35,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/data/27d62d430/805083962bf047839838b77a76e354c6/FLAGf2d088243 [2022-11-16 12:07:36,461 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:36,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2022-11-16 12:07:36,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/data/27d62d430/805083962bf047839838b77a76e354c6/FLAGf2d088243 [2022-11-16 12:07:36,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/data/27d62d430/805083962bf047839838b77a76e354c6 [2022-11-16 12:07:36,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:36,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:36,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:36,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:36,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:36,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:36" (1/1) ... [2022-11-16 12:07:36,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2344d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:36, skipping insertion in model container [2022-11-16 12:07:36,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:36" (1/1) ... [2022-11-16 12:07:36,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:36,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:36,994 WARN L229 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_a4a11f2d-029a-49ba-8da1-9fe3a0121220/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-16 12:07:37,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:37,417 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:37,431 WARN L229 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_a4a11f2d-029a-49ba-8da1-9fe3a0121220/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-11-16 12:07:37,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:37,542 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:37,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37 WrapperNode [2022-11-16 12:07:37,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:37,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:37,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:37,544 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:37,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,590 INFO L138 Inliner]: procedures = 364, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-16 12:07:37,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:37,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:37,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:37,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:37,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:37,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:37,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:37,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:37,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (1/1) ... [2022-11-16 12:07:37,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:37,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:37,661 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:37,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:07:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:07:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:07:37,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:07:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:07:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-11-16 12:07:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-11-16 12:07:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:37,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:37,708 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:07:37,848 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:37,859 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:38,123 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:38,133 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:38,133 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:07:38,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:38 BoogieIcfgContainer [2022-11-16 12:07:38,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:38,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:07:38,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:07:38,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:07:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:36" (1/3) ... [2022-11-16 12:07:38,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eb28a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:38, skipping insertion in model container [2022-11-16 12:07:38,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:37" (2/3) ... [2022-11-16 12:07:38,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eb28a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:38, skipping insertion in model container [2022-11-16 12:07:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:38" (3/3) ... [2022-11-16 12:07:38,150 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-11-16 12:07:38,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:07:38,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:07:38,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:07:38,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:07:38,229 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-16 12:07:38,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 112 transitions, 232 flow [2022-11-16 12:07:38,322 INFO L130 PetriNetUnfolder]: 7/111 cut-off events. [2022-11-16 12:07:38,323 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:07:38,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 111 events. 7/111 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-11-16 12:07:38,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 112 transitions, 232 flow [2022-11-16 12:07:38,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 90 transitions, 183 flow [2022-11-16 12:07:38,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:07:38,350 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;@5815581c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:07:38,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 12:07:38,377 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 12:07:38,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:07:38,378 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:38,379 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:38,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:38,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1558629991, now seen corresponding path program 1 times [2022-11-16 12:07:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:38,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283920588] [2022-11-16 12:07:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:38,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:38,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:38,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283920588] [2022-11-16 12:07:38,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283920588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:38,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:38,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:07:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350129585] [2022-11-16 12:07:38,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:38,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:38,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:38,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2022-11-16 12:07:38,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:38,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:38,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2022-11-16 12:07:38,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,062 INFO L130 PetriNetUnfolder]: 26/200 cut-off events. [2022-11-16 12:07:39,062 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:07:39,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 200 events. 26/200 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 701 event pairs, 2 based on Foata normal form. 23/187 useless extension candidates. Maximal degree in co-relation 212. Up to 42 conditions per place. [2022-11-16 12:07:39,068 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 12 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2022-11-16 12:07:39,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 217 flow [2022-11-16 12:07:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:39,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2022-11-16 12:07:39,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8898809523809523 [2022-11-16 12:07:39,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2022-11-16 12:07:39,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2022-11-16 12:07:39,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2022-11-16 12:07:39,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,121 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 183 flow. Second operand 3 states and 299 transitions. [2022-11-16 12:07:39,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 217 flow [2022-11-16 12:07:39,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 92 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:39,133 INFO L231 Difference]: Finished difference. Result has 91 places, 89 transitions, 197 flow [2022-11-16 12:07:39,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=91, PETRI_TRANSITIONS=89} [2022-11-16 12:07:39,139 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2022-11-16 12:07:39,139 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 89 transitions, 197 flow [2022-11-16 12:07:39,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:39,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:07:39,140 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)] === [2022-11-16 12:07:39,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2071317093, now seen corresponding path program 1 times [2022-11-16 12:07:39,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141932728] [2022-11-16 12:07:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:39,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141932728] [2022-11-16 12:07:39,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141932728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:39,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:39,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:39,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061739240] [2022-11-16 12:07:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:39,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:39,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:39,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 89 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:39,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:39,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,405 INFO L130 PetriNetUnfolder]: 93/378 cut-off events. [2022-11-16 12:07:39,405 INFO L131 PetriNetUnfolder]: For 35/37 co-relation queries the response was YES. [2022-11-16 12:07:39,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 378 events. 93/378 cut-off events. For 35/37 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1857 event pairs, 24 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 586. Up to 123 conditions per place. [2022-11-16 12:07:39,409 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 29 selfloop transitions, 7 changer transitions 0/107 dead transitions. [2022-11-16 12:07:39,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 107 transitions, 314 flow [2022-11-16 12:07:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2022-11-16 12:07:39,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-16 12:07:39,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2022-11-16 12:07:39,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2022-11-16 12:07:39,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2022-11-16 12:07:39,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,417 INFO L175 Difference]: Start difference. First operand has 91 places, 89 transitions, 197 flow. Second operand 5 states and 470 transitions. [2022-11-16 12:07:39,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 107 transitions, 314 flow [2022-11-16 12:07:39,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 107 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:39,421 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 240 flow [2022-11-16 12:07:39,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=240, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2022-11-16 12:07:39,422 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2022-11-16 12:07:39,422 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 240 flow [2022-11-16 12:07:39,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,422 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,423 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:07:39,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash 110309074, now seen corresponding path program 1 times [2022-11-16 12:07:39,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140527131] [2022-11-16 12:07:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:39,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:39,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140527131] [2022-11-16 12:07:39,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140527131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:39,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:39,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:39,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219645493] [2022-11-16 12:07:39,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:39,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:39,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-11-16 12:07:39,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:39,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-11-16 12:07:39,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,733 INFO L130 PetriNetUnfolder]: 16/255 cut-off events. [2022-11-16 12:07:39,733 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 12:07:39,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 255 events. 16/255 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 863 event pairs, 3 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 334. Up to 34 conditions per place. [2022-11-16 12:07:39,738 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 15 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2022-11-16 12:07:39,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 99 transitions, 290 flow [2022-11-16 12:07:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2022-11-16 12:07:39,742 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8428571428571429 [2022-11-16 12:07:39,742 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2022-11-16 12:07:39,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2022-11-16 12:07:39,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2022-11-16 12:07:39,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,748 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,748 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 240 flow. Second operand 5 states and 472 transitions. [2022-11-16 12:07:39,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 99 transitions, 290 flow [2022-11-16 12:07:39,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:39,756 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 268 flow [2022-11-16 12:07:39,757 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2022-11-16 12:07:39,759 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 14 predicate places. [2022-11-16 12:07:39,759 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 268 flow [2022-11-16 12:07:39,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:07:39,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1754168660, now seen corresponding path program 1 times [2022-11-16 12:07:39,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063758060] [2022-11-16 12:07:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:39,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063758060] [2022-11-16 12:07:39,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063758060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:39,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:39,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273142348] [2022-11-16 12:07:39,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:39,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:39,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:39,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:39,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2022-11-16 12:07:39,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:39,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2022-11-16 12:07:39,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:39,952 INFO L130 PetriNetUnfolder]: 20/301 cut-off events. [2022-11-16 12:07:39,952 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-16 12:07:39,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 301 events. 20/301 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1219 event pairs, 8 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 461. Up to 53 conditions per place. [2022-11-16 12:07:39,955 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 14 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-11-16 12:07:39,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 316 flow [2022-11-16 12:07:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:39,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2022-11-16 12:07:39,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-16 12:07:39,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2022-11-16 12:07:39,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2022-11-16 12:07:39,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:39,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2022-11-16 12:07:39,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,962 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 268 flow. Second operand 5 states and 476 transitions. [2022-11-16 12:07:39,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 316 flow [2022-11-16 12:07:39,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:39,967 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 298 flow [2022-11-16 12:07:39,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2022-11-16 12:07:39,968 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 20 predicate places. [2022-11-16 12:07:39,968 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 298 flow [2022-11-16 12:07:39,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:39,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:39,969 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:39,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:07:39,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:39,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash -120253569, now seen corresponding path program 1 times [2022-11-16 12:07:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938180291] [2022-11-16 12:07:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:40,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938180291] [2022-11-16 12:07:40,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938180291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:40,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:40,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429322361] [2022-11-16 12:07:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:40,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:40,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 112 [2022-11-16 12:07:40,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 298 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) [2022-11-16 12:07:40,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:40,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 112 [2022-11-16 12:07:40,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:40,180 INFO L130 PetriNetUnfolder]: 8/220 cut-off events. [2022-11-16 12:07:40,181 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-16 12:07:40,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 220 events. 8/220 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 574 event pairs, 2 based on Foata normal form. 8/227 useless extension candidates. Maximal degree in co-relation 331. Up to 23 conditions per place. [2022-11-16 12:07:40,183 INFO L137 encePairwiseOnDemand]: 108/112 looper letters, 7 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2022-11-16 12:07:40,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 97 transitions, 308 flow [2022-11-16 12:07:40,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:07:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2022-11-16 12:07:40,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601190476190477 [2022-11-16 12:07:40,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2022-11-16 12:07:40,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2022-11-16 12:07:40,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:40,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2022-11-16 12:07:40,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,190 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 298 flow. Second operand 3 states and 289 transitions. [2022-11-16 12:07:40,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 97 transitions, 308 flow [2022-11-16 12:07:40,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 97 transitions, 302 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 12:07:40,200 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 288 flow [2022-11-16 12:07:40,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2022-11-16 12:07:40,203 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 19 predicate places. [2022-11-16 12:07:40,203 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 288 flow [2022-11-16 12:07:40,204 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) [2022-11-16 12:07:40,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:40,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:40,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:07:40,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:40,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:40,208 INFO L85 PathProgramCache]: Analyzing trace with hash 555825579, now seen corresponding path program 1 times [2022-11-16 12:07:40,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:40,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265233216] [2022-11-16 12:07:40,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:40,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:40,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265233216] [2022-11-16 12:07:40,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265233216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:40,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:40,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:07:40,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309851560] [2022-11-16 12:07:40,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:40,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:40,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:40,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:40,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:40,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:40,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:40,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:40,471 INFO L130 PetriNetUnfolder]: 21/276 cut-off events. [2022-11-16 12:07:40,471 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-16 12:07:40,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 276 events. 21/276 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 902 event pairs, 4 based on Foata normal form. 3/277 useless extension candidates. Maximal degree in co-relation 482. Up to 57 conditions per place. [2022-11-16 12:07:40,474 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 25 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2022-11-16 12:07:40,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 404 flow [2022-11-16 12:07:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:40,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 640 transitions. [2022-11-16 12:07:40,476 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2022-11-16 12:07:40,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 640 transitions. [2022-11-16 12:07:40,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 640 transitions. [2022-11-16 12:07:40,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:40,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 640 transitions. [2022-11-16 12:07:40,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,481 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,481 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 288 flow. Second operand 7 states and 640 transitions. [2022-11-16 12:07:40,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 404 flow [2022-11-16 12:07:40,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:40,485 INFO L231 Difference]: Finished difference. Result has 116 places, 103 transitions, 360 flow [2022-11-16 12:07:40,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=116, PETRI_TRANSITIONS=103} [2022-11-16 12:07:40,486 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 27 predicate places. [2022-11-16 12:07:40,486 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 103 transitions, 360 flow [2022-11-16 12:07:40,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:40,487 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:40,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:07:40,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_function_mutexErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:40,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:40,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1313408836, now seen corresponding path program 1 times [2022-11-16 12:07:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:40,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405790889] [2022-11-16 12:07:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:40,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:40,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405790889] [2022-11-16 12:07:40,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405790889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:40,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:40,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:07:40,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166786860] [2022-11-16 12:07:40,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:40,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:40,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:40,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:40,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:40,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 103 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:40,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:40,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:40,732 INFO L130 PetriNetUnfolder]: 21/341 cut-off events. [2022-11-16 12:07:40,733 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2022-11-16 12:07:40,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 341 events. 21/341 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1341 event pairs, 5 based on Foata normal form. 10/349 useless extension candidates. Maximal degree in co-relation 647. Up to 36 conditions per place. [2022-11-16 12:07:40,737 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 37 selfloop transitions, 7 changer transitions 0/121 dead transitions. [2022-11-16 12:07:40,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 512 flow [2022-11-16 12:07:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:07:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:07:40,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 559 transitions. [2022-11-16 12:07:40,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8318452380952381 [2022-11-16 12:07:40,740 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 559 transitions. [2022-11-16 12:07:40,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 559 transitions. [2022-11-16 12:07:40,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:40,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 559 transitions. [2022-11-16 12:07:40,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,746 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,746 INFO L175 Difference]: Start difference. First operand has 116 places, 103 transitions, 360 flow. Second operand 6 states and 559 transitions. [2022-11-16 12:07:40,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 512 flow [2022-11-16 12:07:40,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 121 transitions, 491 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:40,751 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 381 flow [2022-11-16 12:07:40,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=381, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2022-11-16 12:07:40,752 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 32 predicate places. [2022-11-16 12:07:40,752 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 381 flow [2022-11-16 12:07:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:40,753 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:07:40,754 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash 89818960, now seen corresponding path program 1 times [2022-11-16 12:07:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:40,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482949048] [2022-11-16 12:07:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:40,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:40,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:40,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482949048] [2022-11-16 12:07:40,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482949048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:40,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:40,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:40,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550088944] [2022-11-16 12:07:40,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:40,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:40,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:40,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:40,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:40,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:40,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:40,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:40,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:40,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:41,016 INFO L130 PetriNetUnfolder]: 23/359 cut-off events. [2022-11-16 12:07:41,017 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-11-16 12:07:41,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 359 events. 23/359 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1492 event pairs, 3 based on Foata normal form. 2/359 useless extension candidates. Maximal degree in co-relation 715. Up to 71 conditions per place. [2022-11-16 12:07:41,020 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 35 selfloop transitions, 16 changer transitions 0/128 dead transitions. [2022-11-16 12:07:41,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 591 flow [2022-11-16 12:07:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:07:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:07:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 736 transitions. [2022-11-16 12:07:41,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8214285714285714 [2022-11-16 12:07:41,023 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 736 transitions. [2022-11-16 12:07:41,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 736 transitions. [2022-11-16 12:07:41,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:41,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 736 transitions. [2022-11-16 12:07:41,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,028 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,028 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 381 flow. Second operand 8 states and 736 transitions. [2022-11-16 12:07:41,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 591 flow [2022-11-16 12:07:41,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 128 transitions, 586 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:07:41,034 INFO L231 Difference]: Finished difference. Result has 131 places, 111 transitions, 505 flow [2022-11-16 12:07:41,034 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=131, PETRI_TRANSITIONS=111} [2022-11-16 12:07:41,036 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 42 predicate places. [2022-11-16 12:07:41,036 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 111 transitions, 505 flow [2022-11-16 12:07:41,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:41,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:41,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:07:41,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:41,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1510579295, now seen corresponding path program 1 times [2022-11-16 12:07:41,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:41,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836869254] [2022-11-16 12:07:41,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:41,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:41,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:41,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836869254] [2022-11-16 12:07:41,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836869254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:41,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:41,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:07:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200661284] [2022-11-16 12:07:41,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:41,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:07:41,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:41,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 111 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:41,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:41,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:41,320 INFO L130 PetriNetUnfolder]: 23/351 cut-off events. [2022-11-16 12:07:41,320 INFO L131 PetriNetUnfolder]: For 514/514 co-relation queries the response was YES. [2022-11-16 12:07:41,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 351 events. 23/351 cut-off events. For 514/514 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1428 event pairs, 3 based on Foata normal form. 8/357 useless extension candidates. Maximal degree in co-relation 726. Up to 72 conditions per place. [2022-11-16 12:07:41,323 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 31 selfloop transitions, 7 changer transitions 0/115 dead transitions. [2022-11-16 12:07:41,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 115 transitions, 546 flow [2022-11-16 12:07:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 632 transitions. [2022-11-16 12:07:41,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8061224489795918 [2022-11-16 12:07:41,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 632 transitions. [2022-11-16 12:07:41,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 632 transitions. [2022-11-16 12:07:41,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:41,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 632 transitions. [2022-11-16 12:07:41,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.28571428571429) internal successors, (632), 7 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,330 INFO L175 Difference]: Start difference. First operand has 131 places, 111 transitions, 505 flow. Second operand 7 states and 632 transitions. [2022-11-16 12:07:41,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 115 transitions, 546 flow [2022-11-16 12:07:41,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 115 transitions, 513 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-16 12:07:41,336 INFO L231 Difference]: Finished difference. Result has 128 places, 106 transitions, 421 flow [2022-11-16 12:07:41,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=421, PETRI_PLACES=128, PETRI_TRANSITIONS=106} [2022-11-16 12:07:41,337 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2022-11-16 12:07:41,338 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 106 transitions, 421 flow [2022-11-16 12:07:41,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:41,338 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:41,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:07:41,339 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:41,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1925655563, now seen corresponding path program 1 times [2022-11-16 12:07:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:41,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318549265] [2022-11-16 12:07:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:41,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:07:41,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:41,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318549265] [2022-11-16 12:07:41,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318549265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:41,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:41,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:41,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942596336] [2022-11-16 12:07:41,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:41,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:41,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-11-16 12:07:41,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 106 transitions, 421 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:41,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-11-16 12:07:41,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:41,474 INFO L130 PetriNetUnfolder]: 13/301 cut-off events. [2022-11-16 12:07:41,475 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-16 12:07:41,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 301 events. 13/301 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1100 event pairs, 1 based on Foata normal form. 5/305 useless extension candidates. Maximal degree in co-relation 581. Up to 33 conditions per place. [2022-11-16 12:07:41,477 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 8 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2022-11-16 12:07:41,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 106 transitions, 451 flow [2022-11-16 12:07:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2022-11-16 12:07:41,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-16 12:07:41,480 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2022-11-16 12:07:41,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2022-11-16 12:07:41,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:41,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2022-11-16 12:07:41,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,483 INFO L175 Difference]: Start difference. First operand has 128 places, 106 transitions, 421 flow. Second operand 5 states and 464 transitions. [2022-11-16 12:07:41,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 106 transitions, 451 flow [2022-11-16 12:07:41,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 106 transitions, 439 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:07:41,488 INFO L231 Difference]: Finished difference. Result has 127 places, 106 transitions, 429 flow [2022-11-16 12:07:41,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=429, PETRI_PLACES=127, PETRI_TRANSITIONS=106} [2022-11-16 12:07:41,489 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 38 predicate places. [2022-11-16 12:07:41,490 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 106 transitions, 429 flow [2022-11-16 12:07:41,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:41,490 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:41,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:07:41,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash -434219504, now seen corresponding path program 1 times [2022-11-16 12:07:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:41,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851813561] [2022-11-16 12:07:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:41,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851813561] [2022-11-16 12:07:41,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851813561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27068073] [2022-11-16 12:07:41,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:41,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:41,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:41,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:07:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:41,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:41,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:41,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27068073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:41,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:41,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:07:41,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381908439] [2022-11-16 12:07:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:41,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:07:41,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:07:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:41,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-11-16 12:07:41,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 106 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:41,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-11-16 12:07:41,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:41,942 INFO L130 PetriNetUnfolder]: 13/296 cut-off events. [2022-11-16 12:07:41,942 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-11-16 12:07:41,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 296 events. 13/296 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1053 event pairs, 1 based on Foata normal form. 5/300 useless extension candidates. Maximal degree in co-relation 599. Up to 33 conditions per place. [2022-11-16 12:07:41,945 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 11 selfloop transitions, 6 changer transitions 0/107 dead transitions. [2022-11-16 12:07:41,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 107 transitions, 463 flow [2022-11-16 12:07:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:41,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:07:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 648 transitions. [2022-11-16 12:07:41,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.826530612244898 [2022-11-16 12:07:41,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 648 transitions. [2022-11-16 12:07:41,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 648 transitions. [2022-11-16 12:07:41,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:41,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 648 transitions. [2022-11-16 12:07:41,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 92.57142857142857) internal successors, (648), 7 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,952 INFO L175 Difference]: Start difference. First operand has 127 places, 106 transitions, 429 flow. Second operand 7 states and 648 transitions. [2022-11-16 12:07:41,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 107 transitions, 463 flow [2022-11-16 12:07:41,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 107 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:41,957 INFO L231 Difference]: Finished difference. Result has 129 places, 105 transitions, 425 flow [2022-11-16 12:07:41,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=425, PETRI_PLACES=129, PETRI_TRANSITIONS=105} [2022-11-16 12:07:41,958 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 40 predicate places. [2022-11-16 12:07:41,958 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 105 transitions, 425 flow [2022-11-16 12:07:41,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:41,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:41,959 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:41,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:42,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:07:42,164 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_function_mutexErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash -708143340, now seen corresponding path program 1 times [2022-11-16 12:07:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:42,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204658375] [2022-11-16 12:07:42,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:07:42,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204658375] [2022-11-16 12:07:42,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204658375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:42,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:42,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821305190] [2022-11-16 12:07:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:42,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:42,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2022-11-16 12:07:42,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 105 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:42,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2022-11-16 12:07:42,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:42,296 INFO L130 PetriNetUnfolder]: 13/294 cut-off events. [2022-11-16 12:07:42,296 INFO L131 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2022-11-16 12:07:42,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 294 events. 13/294 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1033 event pairs, 1 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 569. Up to 33 conditions per place. [2022-11-16 12:07:42,299 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 7 selfloop transitions, 8 changer transitions 0/105 dead transitions. [2022-11-16 12:07:42,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 105 transitions, 453 flow [2022-11-16 12:07:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:07:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2022-11-16 12:07:42,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8357142857142857 [2022-11-16 12:07:42,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2022-11-16 12:07:42,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2022-11-16 12:07:42,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:42,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2022-11-16 12:07:42,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,304 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,304 INFO L175 Difference]: Start difference. First operand has 129 places, 105 transitions, 425 flow. Second operand 5 states and 468 transitions. [2022-11-16 12:07:42,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 105 transitions, 453 flow [2022-11-16 12:07:42,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 105 transitions, 442 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:07:42,309 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 434 flow [2022-11-16 12:07:42,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2022-11-16 12:07:42,310 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 39 predicate places. [2022-11-16 12:07:42,310 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 434 flow [2022-11-16 12:07:42,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:42,311 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:42,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:07:42,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1063076184, now seen corresponding path program 1 times [2022-11-16 12:07:42,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:42,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97453760] [2022-11-16 12:07:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:42,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:42,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:42,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97453760] [2022-11-16 12:07:42,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97453760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:42,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119704150] [2022-11-16 12:07:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:42,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:42,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:42,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:42,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:07:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:42,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:42,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:42,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:42,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119704150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:42,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:42,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 12:07:42,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102220795] [2022-11-16 12:07:42,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:42,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:07:42,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:42,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:07:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:07:42,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:42,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 434 flow. Second operand has 11 states, 11 states have (on average 88.63636363636364) internal successors, (975), 11 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:42,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:42,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:42,998 INFO L130 PetriNetUnfolder]: 39/544 cut-off events. [2022-11-16 12:07:42,999 INFO L131 PetriNetUnfolder]: For 568/568 co-relation queries the response was YES. [2022-11-16 12:07:43,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 544 events. 39/544 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2453 event pairs, 2 based on Foata normal form. 15/557 useless extension candidates. Maximal degree in co-relation 1187. Up to 57 conditions per place. [2022-11-16 12:07:43,003 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 46 selfloop transitions, 35 changer transitions 0/157 dead transitions. [2022-11-16 12:07:43,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 157 transitions, 827 flow [2022-11-16 12:07:43,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:07:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:07:43,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1630 transitions. [2022-11-16 12:07:43,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.808531746031746 [2022-11-16 12:07:43,009 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1630 transitions. [2022-11-16 12:07:43,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1630 transitions. [2022-11-16 12:07:43,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:43,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1630 transitions. [2022-11-16 12:07:43,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 90.55555555555556) internal successors, (1630), 18 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,021 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,021 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 434 flow. Second operand 18 states and 1630 transitions. [2022-11-16 12:07:43,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 157 transitions, 827 flow [2022-11-16 12:07:43,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 157 transitions, 815 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:43,030 INFO L231 Difference]: Finished difference. Result has 152 places, 125 transitions, 720 flow [2022-11-16 12:07:43,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=720, PETRI_PLACES=152, PETRI_TRANSITIONS=125} [2022-11-16 12:07:43,032 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 63 predicate places. [2022-11-16 12:07:43,032 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 125 transitions, 720 flow [2022-11-16 12:07:43,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 88.63636363636364) internal successors, (975), 11 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,033 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:43,033 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:43,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:43,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:43,239 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread_function_mutexErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:43,239 INFO L85 PathProgramCache]: Analyzing trace with hash -477606750, now seen corresponding path program 1 times [2022-11-16 12:07:43,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:43,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954358236] [2022-11-16 12:07:43,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:43,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:43,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954358236] [2022-11-16 12:07:43,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954358236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:43,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122581050] [2022-11-16 12:07:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:43,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:43,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:43,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:07:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:43,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:07:43,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:43,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:43,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122581050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:43,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:07:43,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:07:43,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210862048] [2022-11-16 12:07:43,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:43,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:07:43,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:07:43,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:07:43,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2022-11-16 12:07:43,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 125 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:43,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2022-11-16 12:07:43,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:43,606 INFO L130 PetriNetUnfolder]: 19/432 cut-off events. [2022-11-16 12:07:43,606 INFO L131 PetriNetUnfolder]: For 828/828 co-relation queries the response was YES. [2022-11-16 12:07:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1114 conditions, 432 events. 19/432 cut-off events. For 828/828 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1762 event pairs, 0 based on Foata normal form. 5/436 useless extension candidates. Maximal degree in co-relation 1040. Up to 51 conditions per place. [2022-11-16 12:07:43,609 INFO L137 encePairwiseOnDemand]: 108/112 looper letters, 9 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-16 12:07:43,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 124 transitions, 744 flow [2022-11-16 12:07:43,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:07:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:07:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-16 12:07:43,611 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8370535714285714 [2022-11-16 12:07:43,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-16 12:07:43,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-16 12:07:43,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:43,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-16 12:07:43,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,615 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,615 INFO L175 Difference]: Start difference. First operand has 152 places, 125 transitions, 720 flow. Second operand 4 states and 375 transitions. [2022-11-16 12:07:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 124 transitions, 744 flow [2022-11-16 12:07:43,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 124 transitions, 637 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-11-16 12:07:43,629 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 619 flow [2022-11-16 12:07:43,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=619, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2022-11-16 12:07:43,630 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 59 predicate places. [2022-11-16 12:07:43,630 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 619 flow [2022-11-16 12:07:43,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:43,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:43,631 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:43,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:07:43,837 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1309256457, now seen corresponding path program 1 times [2022-11-16 12:07:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:43,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234515328] [2022-11-16 12:07:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:43,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:43,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:43,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234515328] [2022-11-16 12:07:43,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234515328] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:43,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639253589] [2022-11-16 12:07:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:43,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:43,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:43,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:44,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:07:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:44,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:07:44,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:44,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:44,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639253589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:44,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:44,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-16 12:07:44,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205969293] [2022-11-16 12:07:44,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:44,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:07:44,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:44,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:07:44,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:07:44,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:44,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 619 flow. Second operand has 14 states, 14 states have (on average 88.28571428571429) internal successors, (1236), 14 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:44,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:44,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:44,806 INFO L130 PetriNetUnfolder]: 63/984 cut-off events. [2022-11-16 12:07:44,806 INFO L131 PetriNetUnfolder]: For 2058/2058 co-relation queries the response was YES. [2022-11-16 12:07:44,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 984 events. 63/984 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 6487 event pairs, 2 based on Foata normal form. 25/1007 useless extension candidates. Maximal degree in co-relation 2380. Up to 78 conditions per place. [2022-11-16 12:07:44,813 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 85 selfloop transitions, 72 changer transitions 0/232 dead transitions. [2022-11-16 12:07:44,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 232 transitions, 1667 flow [2022-11-16 12:07:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 12:07:44,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-16 12:07:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2450 transitions. [2022-11-16 12:07:44,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8101851851851852 [2022-11-16 12:07:44,818 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2450 transitions. [2022-11-16 12:07:44,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2450 transitions. [2022-11-16 12:07:44,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:44,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2450 transitions. [2022-11-16 12:07:44,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 90.74074074074075) internal successors, (2450), 27 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 112.0) internal successors, (3136), 28 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,831 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 112.0) internal successors, (3136), 28 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,831 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 619 flow. Second operand 27 states and 2450 transitions. [2022-11-16 12:07:44,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 232 transitions, 1667 flow [2022-11-16 12:07:44,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 232 transitions, 1653 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 12:07:44,846 INFO L231 Difference]: Finished difference. Result has 185 places, 171 transitions, 1337 flow [2022-11-16 12:07:44,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1337, PETRI_PLACES=185, PETRI_TRANSITIONS=171} [2022-11-16 12:07:44,847 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 96 predicate places. [2022-11-16 12:07:44,847 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 171 transitions, 1337 flow [2022-11-16 12:07:44,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.28571428571429) internal successors, (1236), 14 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:44,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:44,848 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:44,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:07:45,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:45,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:45,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -949222377, now seen corresponding path program 1 times [2022-11-16 12:07:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:45,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867605234] [2022-11-16 12:07:45,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:45,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:45,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:45,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867605234] [2022-11-16 12:07:45,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867605234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:45,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409484871] [2022-11-16 12:07:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:45,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:45,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:45,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:45,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:07:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:45,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:07:45,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:45,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:45,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409484871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:45,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:45,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-11-16 12:07:45,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189412112] [2022-11-16 12:07:45,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:07:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:45,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:07:45,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:07:45,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:45,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 171 transitions, 1337 flow. Second operand has 19 states, 19 states have (on average 88.36842105263158) internal successors, (1679), 19 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:45,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:45,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:45,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:47,046 INFO L130 PetriNetUnfolder]: 131/2197 cut-off events. [2022-11-16 12:07:47,046 INFO L131 PetriNetUnfolder]: For 11831/11831 co-relation queries the response was YES. [2022-11-16 12:07:47,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6006 conditions, 2197 events. 131/2197 cut-off events. For 11831/11831 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 17142 event pairs, 2 based on Foata normal form. 79/2274 useless extension candidates. Maximal degree in co-relation 5916. Up to 179 conditions per place. [2022-11-16 12:07:47,064 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 145 selfloop transitions, 173 changer transitions 0/393 dead transitions. [2022-11-16 12:07:47,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 393 transitions, 4109 flow [2022-11-16 12:07:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 12:07:47,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-16 12:07:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4704 transitions. [2022-11-16 12:07:47,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2022-11-16 12:07:47,075 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4704 transitions. [2022-11-16 12:07:47,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4704 transitions. [2022-11-16 12:07:47,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:47,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4704 transitions. [2022-11-16 12:07:47,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 90.46153846153847) internal successors, (4704), 52 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:47,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 112.0) internal successors, (5936), 53 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:47,100 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 112.0) internal successors, (5936), 53 states have internal predecessors, (5936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:47,101 INFO L175 Difference]: Start difference. First operand has 185 places, 171 transitions, 1337 flow. Second operand 52 states and 4704 transitions. [2022-11-16 12:07:47,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 393 transitions, 4109 flow [2022-11-16 12:07:47,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 393 transitions, 3668 flow, removed 192 selfloop flow, removed 12 redundant places. [2022-11-16 12:07:47,158 INFO L231 Difference]: Finished difference. Result has 254 places, 277 transitions, 2901 flow [2022-11-16 12:07:47,158 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2901, PETRI_PLACES=254, PETRI_TRANSITIONS=277} [2022-11-16 12:07:47,159 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 165 predicate places. [2022-11-16 12:07:47,159 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 277 transitions, 2901 flow [2022-11-16 12:07:47,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 88.36842105263158) internal successors, (1679), 19 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:47,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:47,161 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:47,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:47,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:07:47,366 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:47,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:47,367 INFO L85 PathProgramCache]: Analyzing trace with hash -810755545, now seen corresponding path program 1 times [2022-11-16 12:07:47,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:47,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965306857] [2022-11-16 12:07:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:47,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:47,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965306857] [2022-11-16 12:07:47,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965306857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:47,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467881994] [2022-11-16 12:07:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:47,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:47,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:47,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:47,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:07:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:47,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:07:47,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:48,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:48,381 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:48,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467881994] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:48,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:48,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 29 [2022-11-16 12:07:48,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621574098] [2022-11-16 12:07:48,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:48,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 12:07:48,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:48,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 12:07:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:07:48,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:48,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 277 transitions, 2901 flow. Second operand has 30 states, 30 states have (on average 88.13333333333334) internal successors, (2644), 30 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:48,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:48,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:48,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:07:53,682 INFO L130 PetriNetUnfolder]: 376/7025 cut-off events. [2022-11-16 12:07:53,683 INFO L131 PetriNetUnfolder]: For 145704/145704 co-relation queries the response was YES. [2022-11-16 12:07:53,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21029 conditions, 7025 events. 376/7025 cut-off events. For 145704/145704 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 71927 event pairs, 2 based on Foata normal form. 244/7267 useless extension candidates. Maximal degree in co-relation 20912. Up to 704 conditions per place. [2022-11-16 12:07:53,773 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 391 selfloop transitions, 525 changer transitions 0/991 dead transitions. [2022-11-16 12:07:53,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 991 transitions, 13809 flow [2022-11-16 12:07:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-16 12:07:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2022-11-16 12:07:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 11149 transitions. [2022-11-16 12:07:53,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8093060394889663 [2022-11-16 12:07:53,791 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 11149 transitions. [2022-11-16 12:07:53,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 11149 transitions. [2022-11-16 12:07:53,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:07:53,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 11149 transitions. [2022-11-16 12:07:53,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 90.64227642276423) internal successors, (11149), 123 states have internal predecessors, (11149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:53,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 112.0) internal successors, (13888), 124 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:53,951 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 112.0) internal successors, (13888), 124 states have internal predecessors, (13888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:53,951 INFO L175 Difference]: Start difference. First operand has 254 places, 277 transitions, 2901 flow. Second operand 123 states and 11149 transitions. [2022-11-16 12:07:53,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 991 transitions, 13809 flow [2022-11-16 12:07:54,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 991 transitions, 12989 flow, removed 400 selfloop flow, removed 8 redundant places. [2022-11-16 12:07:54,370 INFO L231 Difference]: Finished difference. Result has 445 places, 649 transitions, 9273 flow [2022-11-16 12:07:54,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=9273, PETRI_PLACES=445, PETRI_TRANSITIONS=649} [2022-11-16 12:07:54,372 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 356 predicate places. [2022-11-16 12:07:54,373 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 649 transitions, 9273 flow [2022-11-16 12:07:54,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 88.13333333333334) internal successors, (2644), 30 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:54,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:07:54,375 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:54,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:07:54,581 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:07:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1374812355, now seen corresponding path program 2 times [2022-11-16 12:07:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799929646] [2022-11-16 12:07:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:55,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799929646] [2022-11-16 12:07:55,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799929646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:07:55,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080321156] [2022-11-16 12:07:55,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:55,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:55,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:55,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:07:55,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:55,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:55,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:07:55,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:55,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:56,252 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:56,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080321156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:56,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:07:56,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-11-16 12:07:56,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371143131] [2022-11-16 12:07:56,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:56,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 12:07:56,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:56,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 12:07:56,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=757, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 12:07:56,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:07:56,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 649 transitions, 9273 flow. Second operand has 35 states, 35 states have (on average 88.65714285714286) internal successors, (3103), 35 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:56,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:07:56,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:07:56,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:06,292 INFO L130 PetriNetUnfolder]: 896/16604 cut-off events. [2022-11-16 12:08:06,293 INFO L131 PetriNetUnfolder]: For 1328251/1328251 co-relation queries the response was YES. [2022-11-16 12:08:06,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59581 conditions, 16604 events. 896/16604 cut-off events. For 1328251/1328251 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 193563 event pairs, 2 based on Foata normal form. 300/16902 useless extension candidates. Maximal degree in co-relation 59386. Up to 1546 conditions per place. [2022-11-16 12:08:06,553 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 600 selfloop transitions, 1536 changer transitions 0/2211 dead transitions. [2022-11-16 12:08:06,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 2211 transitions, 37204 flow [2022-11-16 12:08:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-11-16 12:08:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2022-11-16 12:08:06,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 11188 transitions. [2022-11-16 12:08:06,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8055875576036866 [2022-11-16 12:08:06,575 INFO L72 ComplementDD]: Start complementDD. Operand 124 states and 11188 transitions. [2022-11-16 12:08:06,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 11188 transitions. [2022-11-16 12:08:06,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:06,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 124 states and 11188 transitions. [2022-11-16 12:08:06,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 125 states, 124 states have (on average 90.2258064516129) internal successors, (11188), 124 states have internal predecessors, (11188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:06,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 125 states, 125 states have (on average 112.0) internal successors, (14000), 125 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:06,637 INFO L81 ComplementDD]: Finished complementDD. Result has 125 states, 125 states have (on average 112.0) internal successors, (14000), 125 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:06,638 INFO L175 Difference]: Start difference. First operand has 445 places, 649 transitions, 9273 flow. Second operand 124 states and 11188 transitions. [2022-11-16 12:08:06,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 2211 transitions, 37204 flow [2022-11-16 12:08:11,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 2211 transitions, 35058 flow, removed 1047 selfloop flow, removed 16 redundant places. [2022-11-16 12:08:11,112 INFO L231 Difference]: Finished difference. Result has 618 places, 1717 transitions, 29074 flow [2022-11-16 12:08:11,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=8577, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=124, PETRI_FLOW=29074, PETRI_PLACES=618, PETRI_TRANSITIONS=1717} [2022-11-16 12:08:11,113 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 529 predicate places. [2022-11-16 12:08:11,113 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1717 transitions, 29074 flow [2022-11-16 12:08:11,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 88.65714285714286) internal successors, (3103), 35 states have internal predecessors, (3103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:11,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:08:11,114 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:11,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:11,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:08:11,319 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:08:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:11,320 INFO L85 PathProgramCache]: Analyzing trace with hash 104133925, now seen corresponding path program 2 times [2022-11-16 12:08:11,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:11,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668133624] [2022-11-16 12:08:11,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:11,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:11,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668133624] [2022-11-16 12:08:11,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668133624] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:11,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741026836] [2022-11-16 12:08:11,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:08:11,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:11,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:11,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:11,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:08:12,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:08:12,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:12,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:08:12,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:12,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 0 proven. 503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:08:13,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741026836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:13,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:08:13,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2022-11-16 12:08:13,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963056334] [2022-11-16 12:08:13,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:13,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 12:08:13,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 12:08:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=1212, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 12:08:13,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:08:13,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1717 transitions, 29074 flow. Second operand has 42 states, 42 states have (on average 88.38095238095238) internal successors, (3712), 42 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:13,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:08:13,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:08:13,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:08:47,774 INFO L130 PetriNetUnfolder]: 2360/43857 cut-off events. [2022-11-16 12:08:47,774 INFO L131 PetriNetUnfolder]: For 9036932/9036932 co-relation queries the response was YES. [2022-11-16 12:08:48,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169738 conditions, 43857 events. 2360/43857 cut-off events. For 9036932/9036932 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 616055 event pairs, 2 based on Foata normal form. 1048/44903 useless extension candidates. Maximal degree in co-relation 169476. Up to 4400 conditions per place. [2022-11-16 12:08:48,954 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 1656 selfloop transitions, 4562 changer transitions 0/6293 dead transitions. [2022-11-16 12:08:48,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 6293 transitions, 126849 flow [2022-11-16 12:08:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2022-11-16 12:08:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2022-11-16 12:08:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 19596 transitions. [2022-11-16 12:08:48,975 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8062870309414089 [2022-11-16 12:08:48,975 INFO L72 ComplementDD]: Start complementDD. Operand 217 states and 19596 transitions. [2022-11-16 12:08:48,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 19596 transitions. [2022-11-16 12:08:48,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:08:48,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 217 states and 19596 transitions. [2022-11-16 12:08:49,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 218 states, 217 states have (on average 90.3041474654378) internal successors, (19596), 217 states have internal predecessors, (19596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:49,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 218 states, 218 states have (on average 112.0) internal successors, (24416), 218 states have internal predecessors, (24416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:49,053 INFO L81 ComplementDD]: Finished complementDD. Result has 218 states, 218 states have (on average 112.0) internal successors, (24416), 218 states have internal predecessors, (24416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:08:49,053 INFO L175 Difference]: Start difference. First operand has 618 places, 1717 transitions, 29074 flow. Second operand 217 states and 19596 transitions. [2022-11-16 12:08:49,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 6293 transitions, 126849 flow [2022-11-16 12:09:11,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 6293 transitions, 125215 flow, removed 786 selfloop flow, removed 22 redundant places. [2022-11-16 12:09:11,243 INFO L231 Difference]: Finished difference. Result has 920 places, 4780 transitions, 97618 flow [2022-11-16 12:09:11,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=28142, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=217, PETRI_FLOW=97618, PETRI_PLACES=920, PETRI_TRANSITIONS=4780} [2022-11-16 12:09:11,245 INFO L288 CegarLoopForPetriNet]: 89 programPoint places, 831 predicate places. [2022-11-16 12:09:11,246 INFO L495 AbstractCegarLoop]: Abstraction has has 920 places, 4780 transitions, 97618 flow [2022-11-16 12:09:11,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 88.38095238095238) internal successors, (3712), 42 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:11,247 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:09:11,247 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:11,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:11,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:11,453 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_function_mutexErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 12:09:11,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:11,453 INFO L85 PathProgramCache]: Analyzing trace with hash -298902715, now seen corresponding path program 3 times [2022-11-16 12:09:11,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:11,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297848645] [2022-11-16 12:09:11,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:11,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:12,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297848645] [2022-11-16 12:09:12,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297848645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:09:12,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099196672] [2022-11-16 12:09:12,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:12,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:12,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:12,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:12,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4a11f2d-029a-49ba-8da1-9fe3a0121220/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:09:12,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-16 12:09:12,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:12,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:09:12,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:12,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:09:13,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099196672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:13,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:09:13,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-11-16 12:09:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393857098] [2022-11-16 12:09:13,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-16 12:09:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-16 12:09:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=1869, Unknown=0, NotChecked=0, Total=2550 [2022-11-16 12:09:13,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:09:13,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 4780 transitions, 97618 flow. Second operand has 51 states, 51 states have (on average 88.13725490196079) internal successors, (4495), 51 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:09:13,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:09:13,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:09:13,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand