./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c --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_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/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_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/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_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/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 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 --- 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 11:46:10,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:46:10,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:46:10,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:46:10,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:46:10,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:46:10,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:46:10,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:46:10,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:46:10,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:46:10,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:46:10,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:46:10,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:46:10,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:46:10,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:46:10,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:46:10,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:46:10,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:46:10,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:46:10,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:46:10,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:46:10,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:46:10,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:46:10,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:46:10,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:46:10,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:46:10,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:46:10,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:46:10,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:46:10,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:46:10,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:46:10,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:46:10,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:46:10,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:46:10,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:46:10,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:46:10,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:46:10,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:46:10,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:46:10,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:46:10,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:46:10,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:46:10,764 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:46:10,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:46:10,765 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:46:10,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:46:10,766 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:46:10,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:46:10,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:46:10,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:46:10,768 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:46:10,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:46:10,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:46:10,769 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:46:10,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:46:10,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:46:10,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:46:10,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:46:10,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:46:10,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:46:10,772 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:46:10,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:46:10,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:46:10,773 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:46:10,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:46:10,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:46:10,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:46:10,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:46:10,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:10,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:46:10,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:46:10,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:46:10,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:46:10,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:46:10,776 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:46:10,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:46:10,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:46:10,777 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_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73462fb8dbdc39f07edabdd79150cbad579fbba379eb033cd2e89802bbb8b9a6 [2022-11-16 11:46:11,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:46:11,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:46:11,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:46:11,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:46:11,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:46:11,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-16 11:46:11,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/data/fd9c51123/704ddf27f1414103b84a6f132887de13/FLAGd6c5a012b [2022-11-16 11:46:11,890 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:46:11,894 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/sv-benchmarks/c/weaver/chl-word-trans.wvr.c [2022-11-16 11:46:11,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/data/fd9c51123/704ddf27f1414103b84a6f132887de13/FLAGd6c5a012b [2022-11-16 11:46:12,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/data/fd9c51123/704ddf27f1414103b84a6f132887de13 [2022-11-16 11:46:12,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:46:12,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:46:12,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:12,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:46:12,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:46:12,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4779576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12, skipping insertion in model container [2022-11-16 11:46:12,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:46:12,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:46:12,580 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_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-16 11:46:12,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:12,596 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:46:12,637 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_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/sv-benchmarks/c/weaver/chl-word-trans.wvr.c[3292,3305] [2022-11-16 11:46:12,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:46:12,665 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:46:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12 WrapperNode [2022-11-16 11:46:12,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:46:12,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:12,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:46:12,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:46:12,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,741 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 178 [2022-11-16 11:46:12,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:46:12,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:46:12,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:46:12,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:46:12,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,807 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:46:12,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:46:12,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:46:12,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:46:12,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (1/1) ... [2022-11-16 11:46:12,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:46:12,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:12,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:46:12,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:46:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:46:12,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:46:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:46:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:46:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:46:12,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:46:12,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:46:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:46:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:46:12,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:46:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:46:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:46:12,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:46:12,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:46:12,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:46:12,906 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 11:46:13,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:46:13,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:46:13,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:46:13,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:46:13,701 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:46:13,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:13 BoogieIcfgContainer [2022-11-16 11:46:13,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:46:13,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:46:13,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:46:13,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:46:13,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:46:12" (1/3) ... [2022-11-16 11:46:13,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780b06bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:13, skipping insertion in model container [2022-11-16 11:46:13,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:46:12" (2/3) ... [2022-11-16 11:46:13,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780b06bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:46:13, skipping insertion in model container [2022-11-16 11:46:13,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:46:13" (3/3) ... [2022-11-16 11:46:13,728 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-11-16 11:46:13,738 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:46:13,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:46:13,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:46:13,752 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:46:13,891 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:46:13,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 337 transitions, 698 flow [2022-11-16 11:46:14,105 INFO L130 PetriNetUnfolder]: 28/334 cut-off events. [2022-11-16 11:46:14,105 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:46:14,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 28/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 539 event pairs, 0 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 269. Up to 3 conditions per place. [2022-11-16 11:46:14,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 337 transitions, 698 flow [2022-11-16 11:46:14,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 313 transitions, 641 flow [2022-11-16 11:46:14,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:46:14,149 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;@64ae0a5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:46:14,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-16 11:46:14,165 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2022-11-16 11:46:14,165 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:46:14,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:14,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:14,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:14,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:14,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1684154337, now seen corresponding path program 1 times [2022-11-16 11:46:14,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276177144] [2022-11-16 11:46:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:14,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:14,729 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 11:46:14,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276177144] [2022-11-16 11:46:14,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276177144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:14,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:14,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:46:14,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864188096] [2022-11-16 11:46:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:14,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:46:14,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:46:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:46:14,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-16 11:46:14,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 313 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 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 11:46:14,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:14,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-16 11:46:14,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:15,134 INFO L130 PetriNetUnfolder]: 29/490 cut-off events. [2022-11-16 11:46:15,135 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 11:46:15,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 490 events. 29/490 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1552 event pairs, 0 based on Foata normal form. 24/448 useless extension candidates. Maximal degree in co-relation 470. Up to 44 conditions per place. [2022-11-16 11:46:15,146 INFO L137 encePairwiseOnDemand]: 305/337 looper letters, 58 selfloop transitions, 14 changer transitions 6/332 dead transitions. [2022-11-16 11:46:15,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 332 transitions, 838 flow [2022-11-16 11:46:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:46:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:46:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1501 transitions. [2022-11-16 11:46:15,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8908011869436202 [2022-11-16 11:46:15,176 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1501 transitions. [2022-11-16 11:46:15,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1501 transitions. [2022-11-16 11:46:15,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:15,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1501 transitions. [2022-11-16 11:46:15,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.2) internal successors, (1501), 5 states have internal predecessors, (1501), 0 states have call successors, (0), 0 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 11:46:15,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 11:46:15,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 11:46:15,208 INFO L175 Difference]: Start difference. First operand has 296 places, 313 transitions, 641 flow. Second operand 5 states and 1501 transitions. [2022-11-16 11:46:15,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 332 transitions, 838 flow [2022-11-16 11:46:15,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 332 transitions, 820 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:46:15,228 INFO L231 Difference]: Finished difference. Result has 298 places, 306 transitions, 700 flow [2022-11-16 11:46:15,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=700, PETRI_PLACES=298, PETRI_TRANSITIONS=306} [2022-11-16 11:46:15,236 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 2 predicate places. [2022-11-16 11:46:15,237 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 306 transitions, 700 flow [2022-11-16 11:46:15,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 282.5) internal successors, (1130), 4 states have internal predecessors, (1130), 0 states have call successors, (0), 0 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 11:46:15,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:15,239 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:15,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:46:15,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 685451607, now seen corresponding path program 1 times [2022-11-16 11:46:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:15,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853349610] [2022-11-16 11:46:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:15,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853349610] [2022-11-16 11:46:15,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853349610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:15,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40963821] [2022-11-16 11:46:15,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:15,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:15,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:15,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:15,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:46:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:15,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:46:15,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:15,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:16,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40963821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:16,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:46:16,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:46:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830745099] [2022-11-16 11:46:16,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:16,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:46:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:46:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:46:16,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-16 11:46:16,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 306 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 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 11:46:16,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:16,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-16 11:46:16,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:16,877 INFO L130 PetriNetUnfolder]: 71/1057 cut-off events. [2022-11-16 11:46:16,877 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 11:46:16,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 1057 events. 71/1057 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5158 event pairs, 0 based on Foata normal form. 9/931 useless extension candidates. Maximal degree in co-relation 696. Up to 35 conditions per place. [2022-11-16 11:46:16,890 INFO L137 encePairwiseOnDemand]: 314/337 looper letters, 109 selfloop transitions, 62 changer transitions 0/425 dead transitions. [2022-11-16 11:46:16,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 425 transitions, 1382 flow [2022-11-16 11:46:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:46:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:46:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5238 transitions. [2022-11-16 11:46:16,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8635014836795252 [2022-11-16 11:46:16,902 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5238 transitions. [2022-11-16 11:46:16,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5238 transitions. [2022-11-16 11:46:16,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:16,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5238 transitions. [2022-11-16 11:46:16,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 291.0) internal successors, (5238), 18 states have internal predecessors, (5238), 0 states have call successors, (0), 0 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 11:46:16,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 337.0) internal successors, (6403), 19 states have internal predecessors, (6403), 0 states have call successors, (0), 0 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 11:46:16,935 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 337.0) internal successors, (6403), 19 states have internal predecessors, (6403), 0 states have call successors, (0), 0 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 11:46:16,936 INFO L175 Difference]: Start difference. First operand has 298 places, 306 transitions, 700 flow. Second operand 18 states and 5238 transitions. [2022-11-16 11:46:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 425 transitions, 1382 flow [2022-11-16 11:46:16,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 425 transitions, 1374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:46:16,952 INFO L231 Difference]: Finished difference. Result has 312 places, 348 transitions, 1062 flow [2022-11-16 11:46:16,953 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=312, PETRI_TRANSITIONS=348} [2022-11-16 11:46:16,954 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 16 predicate places. [2022-11-16 11:46:16,954 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 348 transitions, 1062 flow [2022-11-16 11:46:16,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 283.6666666666667) internal successors, (3404), 12 states have internal predecessors, (3404), 0 states have call successors, (0), 0 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 11:46:16,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:16,958 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:16,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:46:17,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:46:17,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash -225835979, now seen corresponding path program 1 times [2022-11-16 11:46:17,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:17,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665601991] [2022-11-16 11:46:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:17,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:17,358 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 11:46:17,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:17,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665601991] [2022-11-16 11:46:17,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665601991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:17,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197976961] [2022-11-16 11:46:17,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:17,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:17,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:17,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:17,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:46:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:17,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:46:17,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:17,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:17,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197976961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:17,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:17,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:46:17,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442601925] [2022-11-16 11:46:17,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:17,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:46:17,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:46:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:17,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 337 [2022-11-16 11:46:17,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 348 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 11:46:17,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:17,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 337 [2022-11-16 11:46:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:18,038 INFO L130 PetriNetUnfolder]: 71/1045 cut-off events. [2022-11-16 11:46:18,038 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-16 11:46:18,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 1045 events. 71/1045 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5064 event pairs, 0 based on Foata normal form. 12/922 useless extension candidates. Maximal degree in co-relation 1070. Up to 68 conditions per place. [2022-11-16 11:46:18,049 INFO L137 encePairwiseOnDemand]: 320/337 looper letters, 59 selfloop transitions, 43 changer transitions 0/356 dead transitions. [2022-11-16 11:46:18,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 356 transitions, 1237 flow [2022-11-16 11:46:18,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:46:18,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:46:18,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2039 transitions. [2022-11-16 11:46:18,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.864349300551081 [2022-11-16 11:46:18,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2039 transitions. [2022-11-16 11:46:18,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2039 transitions. [2022-11-16 11:46:18,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:18,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2039 transitions. [2022-11-16 11:46:18,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.2857142857143) internal successors, (2039), 7 states have internal predecessors, (2039), 0 states have call successors, (0), 0 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 11:46:18,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 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 11:46:18,068 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 337.0) internal successors, (2696), 8 states have internal predecessors, (2696), 0 states have call successors, (0), 0 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 11:46:18,068 INFO L175 Difference]: Start difference. First operand has 312 places, 348 transitions, 1062 flow. Second operand 7 states and 2039 transitions. [2022-11-16 11:46:18,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 356 transitions, 1237 flow [2022-11-16 11:46:18,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 356 transitions, 1121 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:46:18,081 INFO L231 Difference]: Finished difference. Result has 306 places, 336 transitions, 951 flow [2022-11-16 11:46:18,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=951, PETRI_PLACES=306, PETRI_TRANSITIONS=336} [2022-11-16 11:46:18,083 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 10 predicate places. [2022-11-16 11:46:18,083 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 336 transitions, 951 flow [2022-11-16 11:46:18,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 0 states have call successors, (0), 0 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 11:46:18,084 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:18,085 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:18,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 11:46:18,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:18,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:18,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1090246175, now seen corresponding path program 2 times [2022-11-16 11:46:18,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239693268] [2022-11-16 11:46:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:18,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:18,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:18,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239693268] [2022-11-16 11:46:18,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239693268] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:18,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191222609] [2022-11-16 11:46:18,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:46:18,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:18,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:18,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:18,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:46:18,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:46:18,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:46:18,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:46:18,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:46:19,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:46:19,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191222609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:19,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:46:19,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:46:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974090635] [2022-11-16 11:46:19,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:19,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:46:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:19,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:46:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:46:19,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 337 [2022-11-16 11:46:19,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 336 transitions, 951 flow. Second operand has 18 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 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 11:46:19,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:19,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 337 [2022-11-16 11:46:19,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:21,964 INFO L130 PetriNetUnfolder]: 897/4166 cut-off events. [2022-11-16 11:46:21,964 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2022-11-16 11:46:21,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6082 conditions, 4166 events. 897/4166 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 34299 event pairs, 455 based on Foata normal form. 6/3255 useless extension candidates. Maximal degree in co-relation 4650. Up to 232 conditions per place. [2022-11-16 11:46:22,028 INFO L137 encePairwiseOnDemand]: 309/337 looper letters, 248 selfloop transitions, 97 changer transitions 0/565 dead transitions. [2022-11-16 11:46:22,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 565 transitions, 2236 flow [2022-11-16 11:46:22,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 11:46:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 11:46:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12454 transitions. [2022-11-16 11:46:22,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7541936655968026 [2022-11-16 11:46:22,056 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12454 transitions. [2022-11-16 11:46:22,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12454 transitions. [2022-11-16 11:46:22,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:22,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12454 transitions. [2022-11-16 11:46:22,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 254.16326530612244) internal successors, (12454), 49 states have internal predecessors, (12454), 0 states have call successors, (0), 0 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 11:46:22,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 337.0) internal successors, (16850), 50 states have internal predecessors, (16850), 0 states have call successors, (0), 0 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 11:46:22,127 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 337.0) internal successors, (16850), 50 states have internal predecessors, (16850), 0 states have call successors, (0), 0 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 11:46:22,128 INFO L175 Difference]: Start difference. First operand has 306 places, 336 transitions, 951 flow. Second operand 49 states and 12454 transitions. [2022-11-16 11:46:22,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 565 transitions, 2236 flow [2022-11-16 11:46:22,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 565 transitions, 2167 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:46:22,141 INFO L231 Difference]: Finished difference. Result has 352 places, 376 transitions, 1294 flow [2022-11-16 11:46:22,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1294, PETRI_PLACES=352, PETRI_TRANSITIONS=376} [2022-11-16 11:46:22,142 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 56 predicate places. [2022-11-16 11:46:22,143 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 376 transitions, 1294 flow [2022-11-16 11:46:22,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 250.61111111111111) internal successors, (4511), 18 states have internal predecessors, (4511), 0 states have call successors, (0), 0 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 11:46:22,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:22,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:22,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:22,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24f2b09f-011d-4ab6-91fe-a23f0f19dab1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:22,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1332271102, now seen corresponding path program 1 times [2022-11-16 11:46:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748896461] [2022-11-16 11:46:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:22,884 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 11:46:22,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:22,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748896461] [2022-11-16 11:46:22,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748896461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:22,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:22,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:46:22,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535876662] [2022-11-16 11:46:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:22,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:46:22,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:22,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:46:22,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:46:22,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 337 [2022-11-16 11:46:22,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 376 transitions, 1294 flow. Second operand has 11 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 0 states have call successors, (0), 0 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 11:46:22,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:22,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 337 [2022-11-16 11:46:22,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:34,039 INFO L130 PetriNetUnfolder]: 19839/49441 cut-off events. [2022-11-16 11:46:34,039 INFO L131 PetriNetUnfolder]: For 3501/3501 co-relation queries the response was YES. [2022-11-16 11:46:34,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78750 conditions, 49441 events. 19839/49441 cut-off events. For 3501/3501 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 560712 event pairs, 11410 based on Foata normal form. 0/34811 useless extension candidates. Maximal degree in co-relation 67471. Up to 12848 conditions per place. [2022-11-16 11:46:34,511 INFO L137 encePairwiseOnDemand]: 319/337 looper letters, 234 selfloop transitions, 35 changer transitions 0/496 dead transitions. [2022-11-16 11:46:34,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 496 transitions, 2315 flow [2022-11-16 11:46:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:46:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:46:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4026 transitions. [2022-11-16 11:46:34,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7027404433583523 [2022-11-16 11:46:34,520 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4026 transitions. [2022-11-16 11:46:34,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4026 transitions. [2022-11-16 11:46:34,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:34,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4026 transitions. [2022-11-16 11:46:34,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 236.8235294117647) internal successors, (4026), 17 states have internal predecessors, (4026), 0 states have call successors, (0), 0 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 11:46:34,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 337.0) internal successors, (6066), 18 states have internal predecessors, (6066), 0 states have call successors, (0), 0 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 11:46:34,543 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 337.0) internal successors, (6066), 18 states have internal predecessors, (6066), 0 states have call successors, (0), 0 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 11:46:34,543 INFO L175 Difference]: Start difference. First operand has 352 places, 376 transitions, 1294 flow. Second operand 17 states and 4026 transitions. [2022-11-16 11:46:34,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 496 transitions, 2315 flow [2022-11-16 11:46:34,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 496 transitions, 2134 flow, removed 27 selfloop flow, removed 15 redundant places. [2022-11-16 11:46:34,558 INFO L231 Difference]: Finished difference. Result has 362 places, 390 transitions, 1373 flow [2022-11-16 11:46:34,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1373, PETRI_PLACES=362, PETRI_TRANSITIONS=390} [2022-11-16 11:46:34,561 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 66 predicate places. [2022-11-16 11:46:34,562 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 390 transitions, 1373 flow [2022-11-16 11:46:34,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 231.45454545454547) internal successors, (2546), 11 states have internal predecessors, (2546), 0 states have call successors, (0), 0 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 11:46:34,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:34,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:46:34,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1649269633, now seen corresponding path program 1 times [2022-11-16 11:46:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:34,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369565701] [2022-11-16 11:46:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:34,818 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 11:46:34,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:34,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369565701] [2022-11-16 11:46:34,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369565701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:34,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:34,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:46:34,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458159549] [2022-11-16 11:46:34,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:34,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:46:34,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:34,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:46:34,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:34,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 337 [2022-11-16 11:46:34,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 390 transitions, 1373 flow. Second operand has 8 states, 8 states have (on average 257.375) internal successors, (2059), 8 states have internal predecessors, (2059), 0 states have call successors, (0), 0 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 11:46:34,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:34,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 337 [2022-11-16 11:46:34,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:50,469 INFO L130 PetriNetUnfolder]: 33573/84027 cut-off events. [2022-11-16 11:46:50,470 INFO L131 PetriNetUnfolder]: For 8092/8092 co-relation queries the response was YES. [2022-11-16 11:46:50,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134572 conditions, 84027 events. 33573/84027 cut-off events. For 8092/8092 co-relation queries the response was YES. Maximal size of possible extension queue 1504. Compared 1030700 event pairs, 19103 based on Foata normal form. 952/62236 useless extension candidates. Maximal degree in co-relation 115281. Up to 25536 conditions per place. [2022-11-16 11:46:51,359 INFO L137 encePairwiseOnDemand]: 322/337 looper letters, 165 selfloop transitions, 37 changer transitions 0/446 dead transitions. [2022-11-16 11:46:51,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 446 transitions, 1973 flow [2022-11-16 11:46:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:46:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:46:51,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3147 transitions. [2022-11-16 11:46:51,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7781899109792285 [2022-11-16 11:46:51,371 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3147 transitions. [2022-11-16 11:46:51,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3147 transitions. [2022-11-16 11:46:51,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:51,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3147 transitions. [2022-11-16 11:46:51,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 262.25) internal successors, (3147), 12 states have internal predecessors, (3147), 0 states have call successors, (0), 0 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 11:46:51,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 0 states have call successors, (0), 0 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 11:46:51,392 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 337.0) internal successors, (4381), 13 states have internal predecessors, (4381), 0 states have call successors, (0), 0 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 11:46:51,392 INFO L175 Difference]: Start difference. First operand has 362 places, 390 transitions, 1373 flow. Second operand 12 states and 3147 transitions. [2022-11-16 11:46:51,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 446 transitions, 1973 flow [2022-11-16 11:46:51,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 446 transitions, 1951 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:46:51,418 INFO L231 Difference]: Finished difference. Result has 371 places, 394 transitions, 1479 flow [2022-11-16 11:46:51,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1479, PETRI_PLACES=371, PETRI_TRANSITIONS=394} [2022-11-16 11:46:51,421 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 75 predicate places. [2022-11-16 11:46:51,422 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 394 transitions, 1479 flow [2022-11-16 11:46:51,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.375) internal successors, (2059), 8 states have internal predecessors, (2059), 0 states have call successors, (0), 0 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 11:46:51,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:51,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:51,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:46:51,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1577809928, now seen corresponding path program 1 times [2022-11-16 11:46:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:51,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743900646] [2022-11-16 11:46:51,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:51,540 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 11:46:51,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:51,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743900646] [2022-11-16 11:46:51,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743900646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:51,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:51,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:46:51,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557215375] [2022-11-16 11:46:51,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:51,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:46:51,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:51,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:46:51,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:46:51,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 337 [2022-11-16 11:46:51,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 394 transitions, 1479 flow. Second operand has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 11:46:51,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:51,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 337 [2022-11-16 11:46:51,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:54,455 INFO L130 PetriNetUnfolder]: 2444/13859 cut-off events. [2022-11-16 11:46:54,455 INFO L131 PetriNetUnfolder]: For 1145/1145 co-relation queries the response was YES. [2022-11-16 11:46:54,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20983 conditions, 13859 events. 2444/13859 cut-off events. For 1145/1145 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 165214 event pairs, 672 based on Foata normal form. 0/11871 useless extension candidates. Maximal degree in co-relation 17919. Up to 2073 conditions per place. [2022-11-16 11:46:54,622 INFO L137 encePairwiseOnDemand]: 331/337 looper letters, 34 selfloop transitions, 4 changer transitions 0/413 dead transitions. [2022-11-16 11:46:54,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 413 transitions, 1604 flow [2022-11-16 11:46:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:46:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:46:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1555 transitions. [2022-11-16 11:46:54,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9228486646884273 [2022-11-16 11:46:54,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1555 transitions. [2022-11-16 11:46:54,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1555 transitions. [2022-11-16 11:46:54,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:54,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1555 transitions. [2022-11-16 11:46:54,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.0) internal successors, (1555), 5 states have internal predecessors, (1555), 0 states have call successors, (0), 0 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 11:46:54,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 11:46:54,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 337.0) internal successors, (2022), 6 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 11:46:54,632 INFO L175 Difference]: Start difference. First operand has 371 places, 394 transitions, 1479 flow. Second operand 5 states and 1555 transitions. [2022-11-16 11:46:54,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 413 transitions, 1604 flow [2022-11-16 11:46:54,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 413 transitions, 1578 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:46:54,648 INFO L231 Difference]: Finished difference. Result has 372 places, 397 transitions, 1483 flow [2022-11-16 11:46:54,648 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=337, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1483, PETRI_PLACES=372, PETRI_TRANSITIONS=397} [2022-11-16 11:46:54,649 INFO L288 CegarLoopForPetriNet]: 296 programPoint places, 76 predicate places. [2022-11-16 11:46:54,649 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 397 transitions, 1483 flow [2022-11-16 11:46:54,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 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 11:46:54,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:54,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:54,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:46:54,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-16 11:46:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -685463407, now seen corresponding path program 1 times [2022-11-16 11:46:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:54,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713055202] [2022-11-16 11:46:54,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:55,010 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 11:46:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713055202] [2022-11-16 11:46:55,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713055202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:55,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:55,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:46:55,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77932419] [2022-11-16 11:46:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:46:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:46:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:46:55,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 337 [2022-11-16 11:46:55,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 397 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 231.54545454545453) internal successors, (2547), 11 states have internal predecessors, (2547), 0 states have call successors, (0), 0 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 11:46:55,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:55,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 337 [2022-11-16 11:46:55,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand