./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 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_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS --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 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 --- 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-4e7fbc6 [2022-11-23 04:03:13,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 04:03:13,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 04:03:13,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 04:03:13,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 04:03:13,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 04:03:13,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 04:03:13,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 04:03:13,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 04:03:13,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 04:03:13,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 04:03:13,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 04:03:13,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 04:03:13,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 04:03:13,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 04:03:13,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 04:03:13,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 04:03:13,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 04:03:13,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 04:03:13,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 04:03:13,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 04:03:13,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 04:03:13,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 04:03:13,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 04:03:13,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 04:03:13,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 04:03:13,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 04:03:13,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 04:03:13,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 04:03:13,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 04:03:13,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 04:03:13,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 04:03:13,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 04:03:13,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 04:03:13,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 04:03:13,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 04:03:13,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 04:03:13,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 04:03:13,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 04:03:13,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 04:03:13,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 04:03:13,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-23 04:03:13,838 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 04:03:13,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 04:03:13,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 04:03:13,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 04:03:13,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 04:03:13,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 04:03:13,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 04:03:13,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 04:03:13,842 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 04:03:13,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 04:03:13,844 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 04:03:13,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 04:03:13,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 04:03:13,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 04:03:13,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 04:03:13,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 04:03:13,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 04:03:13,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 04:03:13,846 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 04:03:13,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 04:03:13,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 04:03:13,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 04:03:13,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 04:03:13,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 04:03:13,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 04:03:13,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 04:03:13,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:03:13,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 04:03:13,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 04:03:13,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 04:03:13,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 04:03:13,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 04:03:13,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 04:03:13,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 04:03:13,851 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 04:03:13,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 04:03:13,851 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a12d5b905fa07b94a851888f481630fccc5d15913fb6b7efa54c908526d1783 [2022-11-23 04:03:14,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 04:03:14,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 04:03:14,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 04:03:14,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 04:03:14,221 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 04:03:14,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/fib_safe-7.i [2022-11-23 04:03:18,087 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 04:03:18,490 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 04:03:18,491 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/sv-benchmarks/c/pthread/fib_safe-7.i [2022-11-23 04:03:18,509 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/data/389a093e0/753354f9c6ca4c77b61cf8d4926ca4e1/FLAGc0bb2ad47 [2022-11-23 04:03:18,527 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/data/389a093e0/753354f9c6ca4c77b61cf8d4926ca4e1 [2022-11-23 04:03:18,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 04:03:18,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 04:03:18,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 04:03:18,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 04:03:18,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 04:03:18,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:03:18" (1/1) ... [2022-11-23 04:03:18,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51effdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:18, skipping insertion in model container [2022-11-23 04:03:18,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:03:18" (1/1) ... [2022-11-23 04:03:18,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 04:03:18,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 04:03:19,042 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/sv-benchmarks/c/pthread/fib_safe-7.i[30241,30254] [2022-11-23 04:03:19,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:03:19,096 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 04:03:19,168 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/sv-benchmarks/c/pthread/fib_safe-7.i[30241,30254] [2022-11-23 04:03:19,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 04:03:19,242 INFO L208 MainTranslator]: Completed translation [2022-11-23 04:03:19,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19 WrapperNode [2022-11-23 04:03:19,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 04:03:19,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 04:03:19,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 04:03:19,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 04:03:19,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,307 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-23 04:03:19,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 04:03:19,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 04:03:19,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 04:03:19,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 04:03:19,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 04:03:19,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 04:03:19,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 04:03:19,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 04:03:19,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (1/1) ... [2022-11-23 04:03:19,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 04:03:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:19,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 04:03:19,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 04:03:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 04:03:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 04:03:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 04:03:19,438 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 04:03:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 04:03:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 04:03:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 04:03:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 04:03:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 04:03:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 04:03:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 04:03:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 04:03:19,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 04:03:19,444 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 04:03:19,610 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 04:03:19,613 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 04:03:19,946 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 04:03:19,998 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 04:03:19,998 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 04:03:20,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:20 BoogieIcfgContainer [2022-11-23 04:03:20,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 04:03:20,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 04:03:20,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 04:03:20,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 04:03:20,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:03:18" (1/3) ... [2022-11-23 04:03:20,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df22ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:20, skipping insertion in model container [2022-11-23 04:03:20,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:03:19" (2/3) ... [2022-11-23 04:03:20,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df22ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:03:20, skipping insertion in model container [2022-11-23 04:03:20,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:03:20" (3/3) ... [2022-11-23 04:03:20,032 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-7.i [2022-11-23 04:03:20,043 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 04:03:20,058 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 04:03:20,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-23 04:03:20,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 04:03:20,225 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 04:03:20,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-23 04:03:20,342 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-23 04:03:20,342 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:03:20,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-23 04:03:20,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-23 04:03:20,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-23 04:03:20,364 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 04:03:20,393 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-23 04:03:20,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 118 transitions, 242 flow [2022-11-23 04:03:20,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 118 transitions, 242 flow [2022-11-23 04:03:20,498 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-23 04:03:20,498 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:03:20,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-23 04:03:20,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 3978 [2022-11-23 04:03:25,814 INFO L134 LiptonReduction]: Checked pairs total: 3367 [2022-11-23 04:03:25,816 INFO L136 LiptonReduction]: Total number of compositions: 118 [2022-11-23 04:03:25,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 04:03:25,850 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;@52f2fcbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 04:03:25,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-23 04:03:25,854 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2022-11-23 04:03:25,854 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 04:03:25,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:25,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 04:03:25,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:25,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:25,863 INFO L85 PathProgramCache]: Analyzing trace with hash 14200660, now seen corresponding path program 1 times [2022-11-23 04:03:25,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:25,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821626069] [2022-11-23 04:03:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:25,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:26,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:26,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821626069] [2022-11-23 04:03:26,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821626069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:26,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:26,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:03:26,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907711501] [2022-11-23 04:03:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:26,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:26,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 238 [2022-11-23 04:03:26,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:26,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:26,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 238 [2022-11-23 04:03:26,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:26,684 INFO L130 PetriNetUnfolder]: 681/1006 cut-off events. [2022-11-23 04:03:26,684 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-23 04:03:26,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 1006 events. 681/1006 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 4300 event pairs, 141 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 2026. Up to 751 conditions per place. [2022-11-23 04:03:26,704 INFO L137 encePairwiseOnDemand]: 228/238 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-11-23 04:03:26,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 40 transitions, 169 flow [2022-11-23 04:03:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:26,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2022-11-23 04:03:26,732 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2022-11-23 04:03:26,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2022-11-23 04:03:26,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2022-11-23 04:03:26,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:26,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2022-11-23 04:03:26,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:26,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:26,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:26,773 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 372 transitions. [2022-11-23 04:03:26,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 40 transitions, 169 flow [2022-11-23 04:03:26,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:26,779 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 83 flow [2022-11-23 04:03:26,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2022-11-23 04:03:26,787 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2022-11-23 04:03:26,788 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 83 flow [2022-11-23 04:03:26,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:26,788 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:26,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 04:03:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 04:03:26,789 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 14200705, now seen corresponding path program 1 times [2022-11-23 04:03:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:26,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184934379] [2022-11-23 04:03:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:26,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:26,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:26,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:26,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184934379] [2022-11-23 04:03:26,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184934379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:26,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:26,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:03:26,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013036457] [2022-11-23 04:03:26,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:26,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:26,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:26,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:26,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:26,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:26,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:26,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:26,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:27,117 INFO L130 PetriNetUnfolder]: 779/1168 cut-off events. [2022-11-23 04:03:27,118 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-23 04:03:27,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2819 conditions, 1168 events. 779/1168 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5301 event pairs, 321 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 2808. Up to 617 conditions per place. [2022-11-23 04:03:27,128 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2022-11-23 04:03:27,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 42 transitions, 208 flow [2022-11-23 04:03:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2022-11-23 04:03:27,133 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49859943977591037 [2022-11-23 04:03:27,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2022-11-23 04:03:27,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2022-11-23 04:03:27,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:27,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2022-11-23 04:03:27,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,143 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 83 flow. Second operand 3 states and 356 transitions. [2022-11-23 04:03:27,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 42 transitions, 208 flow [2022-11-23 04:03:27,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:03:27,147 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 93 flow [2022-11-23 04:03:27,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2022-11-23 04:03:27,148 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2022-11-23 04:03:27,149 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 93 flow [2022-11-23 04:03:27,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:27,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-23 04:03:27,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 04:03:27,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash 14200659, now seen corresponding path program 1 times [2022-11-23 04:03:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:27,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222373096] [2022-11-23 04:03:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:27,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:27,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222373096] [2022-11-23 04:03:27,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222373096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:27,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:27,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:03:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529853799] [2022-11-23 04:03:27,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:27,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:27,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:27,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:27,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:27,312 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:27,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:27,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:27,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:27,535 INFO L130 PetriNetUnfolder]: 853/1268 cut-off events. [2022-11-23 04:03:27,535 INFO L131 PetriNetUnfolder]: For 356/356 co-relation queries the response was YES. [2022-11-23 04:03:27,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 1268 events. 853/1268 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5474 event pairs, 247 based on Foata normal form. 46/768 useless extension candidates. Maximal degree in co-relation 3318. Up to 883 conditions per place. [2022-11-23 04:03:27,547 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2022-11-23 04:03:27,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 223 flow [2022-11-23 04:03:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-23 04:03:27,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-23 04:03:27,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-23 04:03:27,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-23 04:03:27,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:27,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-23 04:03:27,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,556 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 93 flow. Second operand 3 states and 354 transitions. [2022-11-23 04:03:27,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 223 flow [2022-11-23 04:03:27,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:03:27,561 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 121 flow [2022-11-23 04:03:27,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2022-11-23 04:03:27,563 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-11-23 04:03:27,563 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 121 flow [2022-11-23 04:03:27,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:27,564 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 04:03:27,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 04:03:27,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash 440222235, now seen corresponding path program 1 times [2022-11-23 04:03:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:27,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150556061] [2022-11-23 04:03:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:27,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150556061] [2022-11-23 04:03:27,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150556061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:27,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308205010] [2022-11-23 04:03:27,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:27,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:27,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:27,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:03:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:27,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:03:27,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:27,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:03:27,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308205010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:27,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:03:27,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 04:03:27,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084669902] [2022-11-23 04:03:27,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:27,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:03:27,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:27,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:03:27,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:03:27,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:27,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:27,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:27,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:27,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:28,160 INFO L130 PetriNetUnfolder]: 737/1096 cut-off events. [2022-11-23 04:03:28,160 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2022-11-23 04:03:28,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 1096 events. 737/1096 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4632 event pairs, 295 based on Foata normal form. 0/786 useless extension candidates. Maximal degree in co-relation 3098. Up to 656 conditions per place. [2022-11-23 04:03:28,171 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 40 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2022-11-23 04:03:28,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 251 flow [2022-11-23 04:03:28,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:03:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:03:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2022-11-23 04:03:28,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2022-11-23 04:03:28,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2022-11-23 04:03:28,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2022-11-23 04:03:28,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:28,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2022-11-23 04:03:28,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:28,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:28,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:28,183 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 121 flow. Second operand 4 states and 459 transitions. [2022-11-23 04:03:28,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 251 flow [2022-11-23 04:03:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:03:28,186 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 116 flow [2022-11-23 04:03:28,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2022-11-23 04:03:28,189 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2022-11-23 04:03:28,189 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 116 flow [2022-11-23 04:03:28,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:28,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:28,191 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 04:03:28,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:28,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:28,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash 440222190, now seen corresponding path program 1 times [2022-11-23 04:03:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:28,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283964872] [2022-11-23 04:03:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:28,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:28,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:28,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:28,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283964872] [2022-11-23 04:03:28,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283964872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:28,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582721858] [2022-11-23 04:03:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:28,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:28,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:28,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:28,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 04:03:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:28,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:03:28,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:28,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:28,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:28,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582721858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:28,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:28,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-23 04:03:28,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49371845] [2022-11-23 04:03:28,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 04:03:28,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 04:03:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:03:28,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:03:28,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:28,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:28,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:03:28,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:29,229 INFO L130 PetriNetUnfolder]: 1451/2176 cut-off events. [2022-11-23 04:03:29,229 INFO L131 PetriNetUnfolder]: For 842/842 co-relation queries the response was YES. [2022-11-23 04:03:29,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6182 conditions, 2176 events. 1451/2176 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 10541 event pairs, 99 based on Foata normal form. 234/1768 useless extension candidates. Maximal degree in co-relation 6166. Up to 1029 conditions per place. [2022-11-23 04:03:29,250 INFO L137 encePairwiseOnDemand]: 230/238 looper letters, 71 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2022-11-23 04:03:29,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 92 transitions, 516 flow [2022-11-23 04:03:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 04:03:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 04:03:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 707 transitions. [2022-11-23 04:03:29,255 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2022-11-23 04:03:29,255 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 707 transitions. [2022-11-23 04:03:29,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 707 transitions. [2022-11-23 04:03:29,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:29,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 707 transitions. [2022-11-23 04:03:29,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,265 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,265 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 116 flow. Second operand 6 states and 707 transitions. [2022-11-23 04:03:29,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 92 transitions, 516 flow [2022-11-23 04:03:29,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 92 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:29,271 INFO L231 Difference]: Finished difference. Result has 39 places, 44 transitions, 320 flow [2022-11-23 04:03:29,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=39, PETRI_TRANSITIONS=44} [2022-11-23 04:03:29,275 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2022-11-23 04:03:29,276 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 44 transitions, 320 flow [2022-11-23 04:03:29,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:29,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 04:03:29,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:29,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:29,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:29,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash 763504552, now seen corresponding path program 1 times [2022-11-23 04:03:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:29,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553915689] [2022-11-23 04:03:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:29,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553915689] [2022-11-23 04:03:29,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553915689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:29,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:29,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:03:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326464235] [2022-11-23 04:03:29,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:29,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:29,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:29,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:29,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:29,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 44 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:29,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:29,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:29,914 INFO L130 PetriNetUnfolder]: 1199/1810 cut-off events. [2022-11-23 04:03:29,914 INFO L131 PetriNetUnfolder]: For 2075/2075 co-relation queries the response was YES. [2022-11-23 04:03:29,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 1810 events. 1199/1810 cut-off events. For 2075/2075 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8527 event pairs, 308 based on Foata normal form. 66/1376 useless extension candidates. Maximal degree in co-relation 6608. Up to 1381 conditions per place. [2022-11-23 04:03:29,935 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2022-11-23 04:03:29,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 443 flow [2022-11-23 04:03:29,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-23 04:03:29,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-23 04:03:29,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-23 04:03:29,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-23 04:03:29,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:29,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-23 04:03:29,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,952 INFO L175 Difference]: Start difference. First operand has 39 places, 44 transitions, 320 flow. Second operand 3 states and 350 transitions. [2022-11-23 04:03:29,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 443 flow [2022-11-23 04:03:29,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 412 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-11-23 04:03:29,969 INFO L231 Difference]: Finished difference. Result has 41 places, 39 transitions, 266 flow [2022-11-23 04:03:29,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=41, PETRI_TRANSITIONS=39} [2022-11-23 04:03:29,972 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2022-11-23 04:03:29,972 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 39 transitions, 266 flow [2022-11-23 04:03:29,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:29,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:29,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 04:03:29,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 04:03:29,974 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:29,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:29,975 INFO L85 PathProgramCache]: Analyzing trace with hash 763507164, now seen corresponding path program 1 times [2022-11-23 04:03:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:29,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016649021] [2022-11-23 04:03:29,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:29,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:30,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:30,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016649021] [2022-11-23 04:03:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016649021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:30,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:30,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:03:30,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126112451] [2022-11-23 04:03:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:30,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:30,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:30,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:30,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-23 04:03:30,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:30,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:30,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-23 04:03:30,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:30,555 INFO L130 PetriNetUnfolder]: 1885/2790 cut-off events. [2022-11-23 04:03:30,555 INFO L131 PetriNetUnfolder]: For 5619/5619 co-relation queries the response was YES. [2022-11-23 04:03:30,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10024 conditions, 2790 events. 1885/2790 cut-off events. For 5619/5619 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 14201 event pairs, 483 based on Foata normal form. 0/1942 useless extension candidates. Maximal degree in co-relation 10002. Up to 1667 conditions per place. [2022-11-23 04:03:30,657 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 69 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2022-11-23 04:03:30,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 72 transitions, 649 flow [2022-11-23 04:03:30,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:30,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2022-11-23 04:03:30,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49719887955182074 [2022-11-23 04:03:30,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2022-11-23 04:03:30,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2022-11-23 04:03:30,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:30,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2022-11-23 04:03:30,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:30,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:30,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:30,665 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 266 flow. Second operand 3 states and 355 transitions. [2022-11-23 04:03:30,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 72 transitions, 649 flow [2022-11-23 04:03:30,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:30,676 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 273 flow [2022-11-23 04:03:30,677 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2022-11-23 04:03:30,678 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2022-11-23 04:03:30,679 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 273 flow [2022-11-23 04:03:30,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:30,679 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:30,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 04:03:30,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 04:03:30,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:30,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash 763507099, now seen corresponding path program 1 times [2022-11-23 04:03:30,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:30,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749417] [2022-11-23 04:03:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:30,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:30,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:30,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749417] [2022-11-23 04:03:30,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:30,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:30,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 04:03:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570109477] [2022-11-23 04:03:30,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:30,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:30,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:30,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 238 [2022-11-23 04:03:30,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:30,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:30,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 238 [2022-11-23 04:03:30,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:31,169 INFO L130 PetriNetUnfolder]: 1689/2496 cut-off events. [2022-11-23 04:03:31,169 INFO L131 PetriNetUnfolder]: For 4980/4980 co-relation queries the response was YES. [2022-11-23 04:03:31,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 2496 events. 1689/2496 cut-off events. For 4980/4980 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 12492 event pairs, 343 based on Foata normal form. 0/1960 useless extension candidates. Maximal degree in co-relation 9528. Up to 1667 conditions per place. [2022-11-23 04:03:31,201 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 68 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2022-11-23 04:03:31,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 71 transitions, 638 flow [2022-11-23 04:03:31,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:31,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-11-23 04:03:31,204 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957983193277311 [2022-11-23 04:03:31,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-11-23 04:03:31,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-11-23 04:03:31,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:31,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-11-23 04:03:31,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,209 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,209 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 273 flow. Second operand 3 states and 354 transitions. [2022-11-23 04:03:31,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 71 transitions, 638 flow [2022-11-23 04:03:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 04:03:31,218 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 281 flow [2022-11-23 04:03:31,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2022-11-23 04:03:31,222 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2022-11-23 04:03:31,224 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 281 flow [2022-11-23 04:03:31,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,225 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:31,225 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 04:03:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 04:03:31,228 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:31,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash 763507195, now seen corresponding path program 1 times [2022-11-23 04:03:31,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:31,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295977608] [2022-11-23 04:03:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:31,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295977608] [2022-11-23 04:03:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295977608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:31,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:31,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 04:03:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469743978] [2022-11-23 04:03:31,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:31,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:03:31,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:31,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:03:31,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:03:31,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:31,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:31,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:31,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:31,647 INFO L130 PetriNetUnfolder]: 1395/2104 cut-off events. [2022-11-23 04:03:31,647 INFO L131 PetriNetUnfolder]: For 4818/4818 co-relation queries the response was YES. [2022-11-23 04:03:31,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8296 conditions, 2104 events. 1395/2104 cut-off events. For 4818/4818 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10516 event pairs, 203 based on Foata normal form. 98/1880 useless extension candidates. Maximal degree in co-relation 8271. Up to 1569 conditions per place. [2022-11-23 04:03:31,669 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 67 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-11-23 04:03:31,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 633 flow [2022-11-23 04:03:31,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:03:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 04:03:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2022-11-23 04:03:31,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2022-11-23 04:03:31,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2022-11-23 04:03:31,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2022-11-23 04:03:31,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:31,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2022-11-23 04:03:31,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,676 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 281 flow. Second operand 3 states and 350 transitions. [2022-11-23 04:03:31,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 633 flow [2022-11-23 04:03:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 69 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:31,685 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 278 flow [2022-11-23 04:03:31,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2022-11-23 04:03:31,686 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2022-11-23 04:03:31,687 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 278 flow [2022-11-23 04:03:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:31,688 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:31,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 04:03:31,688 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash -711518776, now seen corresponding path program 1 times [2022-11-23 04:03:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:31,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879998173] [2022-11-23 04:03:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:31,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:31,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879998173] [2022-11-23 04:03:31,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879998173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:31,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099460257] [2022-11-23 04:03:31,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:31,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:31,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:31,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:31,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 04:03:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:31,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 04:03:31,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:31,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:03:31,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099460257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:31,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:03:31,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-23 04:03:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104996112] [2022-11-23 04:03:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:31,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 04:03:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 04:03:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 04:03:31,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:31,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:31,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:31,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:31,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:32,293 INFO L130 PetriNetUnfolder]: 1423/2167 cut-off events. [2022-11-23 04:03:32,294 INFO L131 PetriNetUnfolder]: For 3064/3064 co-relation queries the response was YES. [2022-11-23 04:03:32,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8678 conditions, 2167 events. 1423/2167 cut-off events. For 3064/3064 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 10728 event pairs, 318 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 8652. Up to 1078 conditions per place. [2022-11-23 04:03:32,316 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 63 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2022-11-23 04:03:32,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 617 flow [2022-11-23 04:03:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:03:32,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 04:03:32,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2022-11-23 04:03:32,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2022-11-23 04:03:32,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2022-11-23 04:03:32,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2022-11-23 04:03:32,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:32,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2022-11-23 04:03:32,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:32,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:32,329 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:32,329 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 278 flow. Second operand 5 states and 574 transitions. [2022-11-23 04:03:32,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 617 flow [2022-11-23 04:03:32,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 609 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:32,341 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 305 flow [2022-11-23 04:03:32,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2022-11-23 04:03:32,343 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-23 04:03:32,343 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 305 flow [2022-11-23 04:03:32,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.6) internal successors, (533), 5 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:32,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:32,344 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:32,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:32,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:32,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:32,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:32,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2101162265, now seen corresponding path program 1 times [2022-11-23 04:03:32,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:32,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085910028] [2022-11-23 04:03:32,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:32,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:32,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085910028] [2022-11-23 04:03:32,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085910028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738885238] [2022-11-23 04:03:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:32,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:32,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:32,638 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:32,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 04:03:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:32,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:03:32,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:32,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:03:32,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738885238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:32,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:03:32,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-23 04:03:32,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118469473] [2022-11-23 04:03:32,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:32,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:03:32,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:03:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 04:03:32,822 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 238 [2022-11-23 04:03:32,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 305 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:32,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:32,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 238 [2022-11-23 04:03:32,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:33,139 INFO L130 PetriNetUnfolder]: 1129/1684 cut-off events. [2022-11-23 04:03:33,139 INFO L131 PetriNetUnfolder]: For 4645/4645 co-relation queries the response was YES. [2022-11-23 04:03:33,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7296 conditions, 1684 events. 1129/1684 cut-off events. For 4645/4645 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7536 event pairs, 411 based on Foata normal form. 280/1812 useless extension candidates. Maximal degree in co-relation 7269. Up to 942 conditions per place. [2022-11-23 04:03:33,156 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 38 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2022-11-23 04:03:33,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 464 flow [2022-11-23 04:03:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:03:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:03:33,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2022-11-23 04:03:33,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4737394957983193 [2022-11-23 04:03:33,160 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2022-11-23 04:03:33,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2022-11-23 04:03:33,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:33,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2022-11-23 04:03:33,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,165 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,166 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 305 flow. Second operand 4 states and 451 transitions. [2022-11-23 04:03:33,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 464 flow [2022-11-23 04:03:33,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 439 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-23 04:03:33,181 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 331 flow [2022-11-23 04:03:33,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2022-11-23 04:03:33,182 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-23 04:03:33,183 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 331 flow [2022-11-23 04:03:33,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:33,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:33,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:33,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 04:03:33,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:33,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:33,391 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080339, now seen corresponding path program 1 times [2022-11-23 04:03:33,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:33,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543845664] [2022-11-23 04:03:33,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:33,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:33,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543845664] [2022-11-23 04:03:33,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543845664] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:33,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787963551] [2022-11-23 04:03:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:33,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:33,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:33,472 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:33,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 04:03:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:33,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 04:03:33,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:33,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:03:33,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787963551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:33,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:03:33,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-23 04:03:33,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837632782] [2022-11-23 04:03:33,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:33,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:03:33,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:33,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:03:33,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 04:03:33,662 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:33,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:33,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:33,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:33,911 INFO L130 PetriNetUnfolder]: 971/1450 cut-off events. [2022-11-23 04:03:33,911 INFO L131 PetriNetUnfolder]: For 6039/6039 co-relation queries the response was YES. [2022-11-23 04:03:33,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1450 events. 971/1450 cut-off events. For 6039/6039 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6449 event pairs, 173 based on Foata normal form. 76/1374 useless extension candidates. Maximal degree in co-relation 6610. Up to 1012 conditions per place. [2022-11-23 04:03:33,928 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 62 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2022-11-23 04:03:33,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 731 flow [2022-11-23 04:03:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:03:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:03:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 447 transitions. [2022-11-23 04:03:33,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4695378151260504 [2022-11-23 04:03:33,931 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 447 transitions. [2022-11-23 04:03:33,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 447 transitions. [2022-11-23 04:03:33,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:33,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 447 transitions. [2022-11-23 04:03:33,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,937 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 331 flow. Second operand 4 states and 447 transitions. [2022-11-23 04:03:33,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 731 flow [2022-11-23 04:03:33,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 724 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:33,946 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 326 flow [2022-11-23 04:03:33,946 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2022-11-23 04:03:33,947 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2022-11-23 04:03:33,947 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 326 flow [2022-11-23 04:03:33,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:33,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:33,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:33,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:34,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:34,155 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080274, now seen corresponding path program 1 times [2022-11-23 04:03:34,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:34,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625824701] [2022-11-23 04:03:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:34,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:34,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625824701] [2022-11-23 04:03:34,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625824701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:34,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270980949] [2022-11-23 04:03:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:34,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:34,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:34,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:34,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 04:03:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:34,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 04:03:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:34,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:34,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270980949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:34,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:34,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-23 04:03:34,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155929264] [2022-11-23 04:03:34,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:34,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 04:03:34,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:34,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 04:03:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-11-23 04:03:34,503 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 238 [2022-11-23 04:03:34,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 326 flow. Second operand has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:34,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:34,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 238 [2022-11-23 04:03:34,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:35,186 INFO L130 PetriNetUnfolder]: 2311/3398 cut-off events. [2022-11-23 04:03:35,187 INFO L131 PetriNetUnfolder]: For 15273/15273 co-relation queries the response was YES. [2022-11-23 04:03:35,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15278 conditions, 3398 events. 2311/3398 cut-off events. For 15273/15273 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16499 event pairs, 173 based on Foata normal form. 0/3018 useless extension candidates. Maximal degree in co-relation 15250. Up to 1089 conditions per place. [2022-11-23 04:03:35,223 INFO L137 encePairwiseOnDemand]: 234/238 looper letters, 146 selfloop transitions, 8 changer transitions 0/154 dead transitions. [2022-11-23 04:03:35,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 154 transitions, 1766 flow [2022-11-23 04:03:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 04:03:35,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 04:03:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 674 transitions. [2022-11-23 04:03:35,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47198879551820727 [2022-11-23 04:03:35,228 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 674 transitions. [2022-11-23 04:03:35,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 674 transitions. [2022-11-23 04:03:35,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:35,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 674 transitions. [2022-11-23 04:03:35,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:35,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:35,236 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:35,236 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 326 flow. Second operand 6 states and 674 transitions. [2022-11-23 04:03:35,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 154 transitions, 1766 flow [2022-11-23 04:03:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 154 transitions, 1763 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:35,251 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 384 flow [2022-11-23 04:03:35,251 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2022-11-23 04:03:35,252 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2022-11-23 04:03:35,252 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 384 flow [2022-11-23 04:03:35,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:35,253 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:35,253 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:35,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:35,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:35,461 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2101080243, now seen corresponding path program 1 times [2022-11-23 04:03:35,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:35,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519225945] [2022-11-23 04:03:35,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:35,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:35,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519225945] [2022-11-23 04:03:35,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519225945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:35,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659905084] [2022-11-23 04:03:35,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:35,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:35,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:35,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:35,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 04:03:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 04:03:35,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:35,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 04:03:35,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659905084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:35,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 04:03:35,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-23 04:03:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113902582] [2022-11-23 04:03:35,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:35,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:03:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:35,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:03:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:03:35,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 238 [2022-11-23 04:03:35,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 384 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:35,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:35,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 238 [2022-11-23 04:03:35,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:36,205 INFO L130 PetriNetUnfolder]: 1761/2620 cut-off events. [2022-11-23 04:03:36,206 INFO L131 PetriNetUnfolder]: For 12106/12106 co-relation queries the response was YES. [2022-11-23 04:03:36,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12721 conditions, 2620 events. 1761/2620 cut-off events. For 12106/12106 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12401 event pairs, 173 based on Foata normal form. 0/2620 useless extension candidates. Maximal degree in co-relation 12690. Up to 2182 conditions per place. [2022-11-23 04:03:36,241 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-23 04:03:36,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 761 flow [2022-11-23 04:03:36,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 04:03:36,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 04:03:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 446 transitions. [2022-11-23 04:03:36,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2022-11-23 04:03:36,245 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 446 transitions. [2022-11-23 04:03:36,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 446 transitions. [2022-11-23 04:03:36,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:36,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 446 transitions. [2022-11-23 04:03:36,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:36,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:36,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 238.0) internal successors, (1190), 5 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:36,252 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 384 flow. Second operand 4 states and 446 transitions. [2022-11-23 04:03:36,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 761 flow [2022-11-23 04:03:36,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 753 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-23 04:03:36,275 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 351 flow [2022-11-23 04:03:36,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=351, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2022-11-23 04:03:36,277 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2022-11-23 04:03:36,277 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 351 flow [2022-11-23 04:03:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:36,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:36,278 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:36,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 04:03:36,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 04:03:36,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash -711518825, now seen corresponding path program 1 times [2022-11-23 04:03:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:36,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573826271] [2022-11-23 04:03:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:36,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:36,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573826271] [2022-11-23 04:03:36,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573826271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943420626] [2022-11-23 04:03:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:36,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:36,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:36,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 04:03:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:36,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 04:03:36,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:36,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:36,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943420626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:36,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:36,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-23 04:03:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45994154] [2022-11-23 04:03:36,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:36,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 04:03:36,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 04:03:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-23 04:03:36,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:03:36,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 351 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:36,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:36,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:03:36,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:37,784 INFO L130 PetriNetUnfolder]: 2465/3676 cut-off events. [2022-11-23 04:03:37,784 INFO L131 PetriNetUnfolder]: For 13158/13158 co-relation queries the response was YES. [2022-11-23 04:03:37,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17488 conditions, 3676 events. 2465/3676 cut-off events. For 13158/13158 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18420 event pairs, 241 based on Foata normal form. 308/3984 useless extension candidates. Maximal degree in co-relation 17456. Up to 2319 conditions per place. [2022-11-23 04:03:37,829 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 110 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2022-11-23 04:03:37,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 1210 flow [2022-11-23 04:03:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 04:03:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 04:03:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1014 transitions. [2022-11-23 04:03:37,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4733893557422969 [2022-11-23 04:03:37,834 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1014 transitions. [2022-11-23 04:03:37,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1014 transitions. [2022-11-23 04:03:37,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:37,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1014 transitions. [2022-11-23 04:03:37,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.66666666666667) internal successors, (1014), 9 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:37,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 238.0) internal successors, (2380), 10 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:37,845 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 238.0) internal successors, (2380), 10 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:37,845 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 351 flow. Second operand 9 states and 1014 transitions. [2022-11-23 04:03:37,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 1210 flow [2022-11-23 04:03:37,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 133 transitions, 1200 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:37,876 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 617 flow [2022-11-23 04:03:37,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=617, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2022-11-23 04:03:37,878 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2022-11-23 04:03:37,878 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 617 flow [2022-11-23 04:03:37,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:37,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:37,879 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2022-11-23 04:03:37,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:38,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 04:03:38,087 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:38,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2125825492, now seen corresponding path program 2 times [2022-11-23 04:03:38,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:38,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081668263] [2022-11-23 04:03:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:38,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:38,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081668263] [2022-11-23 04:03:38,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081668263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452138117] [2022-11-23 04:03:38,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:03:38,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:38,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:38,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 04:03:38,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:03:38,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:03:38,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 04:03:38,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:38,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:38,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452138117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:38,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:38,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-23 04:03:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103082768] [2022-11-23 04:03:38,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:38,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:03:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:03:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:03:38,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:03:38,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 617 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:38,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:38,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:03:38,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:40,090 INFO L130 PetriNetUnfolder]: 3457/5176 cut-off events. [2022-11-23 04:03:40,091 INFO L131 PetriNetUnfolder]: For 32835/32835 co-relation queries the response was YES. [2022-11-23 04:03:40,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27545 conditions, 5176 events. 3457/5176 cut-off events. For 32835/32835 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 26684 event pairs, 219 based on Foata normal form. 496/5672 useless extension candidates. Maximal degree in co-relation 27509. Up to 2941 conditions per place. [2022-11-23 04:03:40,156 INFO L137 encePairwiseOnDemand]: 233/238 looper letters, 164 selfloop transitions, 35 changer transitions 0/199 dead transitions. [2022-11-23 04:03:40,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 199 transitions, 1888 flow [2022-11-23 04:03:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 04:03:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 04:03:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1370 transitions. [2022-11-23 04:03:40,162 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4796918767507003 [2022-11-23 04:03:40,163 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1370 transitions. [2022-11-23 04:03:40,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1370 transitions. [2022-11-23 04:03:40,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:40,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1370 transitions. [2022-11-23 04:03:40,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.16666666666667) internal successors, (1370), 12 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:40,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:40,177 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:40,177 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 617 flow. Second operand 12 states and 1370 transitions. [2022-11-23 04:03:40,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 199 transitions, 1888 flow [2022-11-23 04:03:40,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 199 transitions, 1840 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:40,271 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 963 flow [2022-11-23 04:03:40,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=963, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-11-23 04:03:40,271 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2022-11-23 04:03:40,272 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 963 flow [2022-11-23 04:03:40,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:40,273 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:40,273 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:40,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:40,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 04:03:40,483 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:40,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1572337244, now seen corresponding path program 2 times [2022-11-23 04:03:40,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:40,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951807067] [2022-11-23 04:03:40,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:40,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:40,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951807067] [2022-11-23 04:03:40,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951807067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162613170] [2022-11-23 04:03:40,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:03:40,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:40,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:40,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 04:03:40,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:03:40,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:03:40,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 04:03:40,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:41,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:41,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162613170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:41,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:41,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-23 04:03:41,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799113051] [2022-11-23 04:03:41,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:41,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:03:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:03:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:03:41,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 238 [2022-11-23 04:03:41,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 963 flow. Second operand has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:41,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:41,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 238 [2022-11-23 04:03:41,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:44,173 INFO L130 PetriNetUnfolder]: 7177/10720 cut-off events. [2022-11-23 04:03:44,173 INFO L131 PetriNetUnfolder]: For 150175/150175 co-relation queries the response was YES. [2022-11-23 04:03:44,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63540 conditions, 10720 events. 7177/10720 cut-off events. For 150175/150175 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 59192 event pairs, 347 based on Foata normal form. 912/11632 useless extension candidates. Maximal degree in co-relation 63497. Up to 2826 conditions per place. [2022-11-23 04:03:44,312 INFO L137 encePairwiseOnDemand]: 235/238 looper letters, 687 selfloop transitions, 11 changer transitions 0/698 dead transitions. [2022-11-23 04:03:44,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 698 transitions, 11291 flow [2022-11-23 04:03:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 04:03:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 04:03:44,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1333 transitions. [2022-11-23 04:03:44,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46673669467787116 [2022-11-23 04:03:44,318 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1333 transitions. [2022-11-23 04:03:44,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1333 transitions. [2022-11-23 04:03:44,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:44,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1333 transitions. [2022-11-23 04:03:44,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 111.08333333333333) internal successors, (1333), 12 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:44,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:44,330 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 238.0) internal successors, (3094), 13 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:44,330 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 963 flow. Second operand 12 states and 1333 transitions. [2022-11-23 04:03:44,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 698 transitions, 11291 flow [2022-11-23 04:03:44,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 698 transitions, 10333 flow, removed 451 selfloop flow, removed 2 redundant places. [2022-11-23 04:03:44,517 INFO L231 Difference]: Finished difference. Result has 94 places, 79 transitions, 959 flow [2022-11-23 04:03:44,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=959, PETRI_PLACES=94, PETRI_TRANSITIONS=79} [2022-11-23 04:03:44,519 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2022-11-23 04:03:44,519 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 959 flow [2022-11-23 04:03:44,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 102.76470588235294) internal successors, (1747), 17 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:44,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:44,521 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:44,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:44,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 04:03:44,729 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:44,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1636210841, now seen corresponding path program 1 times [2022-11-23 04:03:44,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:44,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806571763] [2022-11-23 04:03:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:44,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:44,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806571763] [2022-11-23 04:03:44,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806571763] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:44,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939164143] [2022-11-23 04:03:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:44,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:44,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:44,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:44,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 04:03:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:44,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 04:03:45,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:45,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:45,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939164143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:45,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:45,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-23 04:03:45,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274344287] [2022-11-23 04:03:45,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:45,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:03:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:03:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:03:45,363 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:03:45,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 79 transitions, 959 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:45,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:45,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:03:45,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:49,291 INFO L130 PetriNetUnfolder]: 10547/15933 cut-off events. [2022-11-23 04:03:49,291 INFO L131 PetriNetUnfolder]: For 192330/192330 co-relation queries the response was YES. [2022-11-23 04:03:49,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93645 conditions, 15933 events. 10547/15933 cut-off events. For 192330/192330 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 98769 event pairs, 459 based on Foata normal form. 727/16660 useless extension candidates. Maximal degree in co-relation 93595. Up to 6508 conditions per place. [2022-11-23 04:03:49,499 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 264 selfloop transitions, 75 changer transitions 0/339 dead transitions. [2022-11-23 04:03:49,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 339 transitions, 3943 flow [2022-11-23 04:03:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 04:03:49,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-23 04:03:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1695 transitions. [2022-11-23 04:03:49,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47478991596638653 [2022-11-23 04:03:49,506 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1695 transitions. [2022-11-23 04:03:49,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1695 transitions. [2022-11-23 04:03:49,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:49,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1695 transitions. [2022-11-23 04:03:49,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.0) internal successors, (1695), 15 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:49,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:49,532 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 238.0) internal successors, (3808), 16 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:49,532 INFO L175 Difference]: Start difference. First operand has 94 places, 79 transitions, 959 flow. Second operand 15 states and 1695 transitions. [2022-11-23 04:03:49,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 339 transitions, 3943 flow [2022-11-23 04:03:50,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 339 transitions, 3499 flow, removed 169 selfloop flow, removed 5 redundant places. [2022-11-23 04:03:50,421 INFO L231 Difference]: Finished difference. Result has 110 places, 119 transitions, 1732 flow [2022-11-23 04:03:50,421 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1732, PETRI_PLACES=110, PETRI_TRANSITIONS=119} [2022-11-23 04:03:50,422 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2022-11-23 04:03:50,422 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 119 transitions, 1732 flow [2022-11-23 04:03:50,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:50,423 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:03:50,423 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:50,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 04:03:50,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 04:03:50,629 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:03:50,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash 367500575, now seen corresponding path program 2 times [2022-11-23 04:03:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:50,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547491015] [2022-11-23 04:03:50,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547491015] [2022-11-23 04:03:50,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547491015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:03:50,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422123879] [2022-11-23 04:03:50,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:03:50,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:03:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:03:50,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:03:50,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 04:03:50,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:03:50,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:03:50,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 04:03:50,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:03:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:51,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:03:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:51,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422123879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:03:51,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:03:51,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-23 04:03:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357874814] [2022-11-23 04:03:51,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:03:51,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 04:03:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:51,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 04:03:51,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-11-23 04:03:51,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:03:51,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 1732 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:51,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:03:51,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:03:51,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:03:56,947 INFO L130 PetriNetUnfolder]: 15607/23678 cut-off events. [2022-11-23 04:03:56,947 INFO L131 PetriNetUnfolder]: For 388828/388828 co-relation queries the response was YES. [2022-11-23 04:03:57,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152008 conditions, 23678 events. 15607/23678 cut-off events. For 388828/388828 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 157529 event pairs, 770 based on Foata normal form. 796/24474 useless extension candidates. Maximal degree in co-relation 151951. Up to 10117 conditions per place. [2022-11-23 04:03:57,257 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 374 selfloop transitions, 115 changer transitions 0/489 dead transitions. [2022-11-23 04:03:57,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 489 transitions, 5748 flow [2022-11-23 04:03:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 04:03:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-23 04:03:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2248 transitions. [2022-11-23 04:03:57,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4722689075630252 [2022-11-23 04:03:57,265 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2248 transitions. [2022-11-23 04:03:57,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2248 transitions. [2022-11-23 04:03:57,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:03:57,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2248 transitions. [2022-11-23 04:03:57,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.4) internal successors, (2248), 20 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:57,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 238.0) internal successors, (4998), 21 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:57,283 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 238.0) internal successors, (4998), 21 states have internal predecessors, (4998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:03:57,284 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 1732 flow. Second operand 20 states and 2248 transitions. [2022-11-23 04:03:57,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 489 transitions, 5748 flow [2022-11-23 04:04:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 489 transitions, 5450 flow, removed 140 selfloop flow, removed 6 redundant places. [2022-11-23 04:04:00,652 INFO L231 Difference]: Finished difference. Result has 130 places, 183 transitions, 2897 flow [2022-11-23 04:04:00,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2897, PETRI_PLACES=130, PETRI_TRANSITIONS=183} [2022-11-23 04:04:00,653 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2022-11-23 04:04:00,653 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 183 transitions, 2897 flow [2022-11-23 04:04:00,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:00,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:04:00,655 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:04:00,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 04:04:00,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:04:00,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:04:00,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:04:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1484070644, now seen corresponding path program 3 times [2022-11-23 04:04:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:04:00,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883096991] [2022-11-23 04:04:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:04:00,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:04:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:04:00,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:00,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:04:00,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883096991] [2022-11-23 04:04:00,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883096991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:04:00,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762335132] [2022-11-23 04:04:00,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 04:04:00,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:04:00,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:04:00,991 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:04:01,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 04:04:01,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 04:04:01,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:04:01,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 04:04:01,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:04:01,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:01,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:04:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:01,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762335132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:04:01,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:04:01,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-23 04:04:01,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678320961] [2022-11-23 04:04:01,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:04:01,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 04:04:01,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:04:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 04:04:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=268, Unknown=0, NotChecked=0, Total=380 [2022-11-23 04:04:01,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:04:01,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 183 transitions, 2897 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:01,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:04:01,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:04:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:04:09,105 INFO L130 PetriNetUnfolder]: 21157/32276 cut-off events. [2022-11-23 04:04:09,105 INFO L131 PetriNetUnfolder]: For 732753/732753 co-relation queries the response was YES. [2022-11-23 04:04:09,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220240 conditions, 32276 events. 21157/32276 cut-off events. For 732753/732753 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 227203 event pairs, 1288 based on Foata normal form. 1063/33339 useless extension candidates. Maximal degree in co-relation 220177. Up to 12615 conditions per place. [2022-11-23 04:04:09,555 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 422 selfloop transitions, 164 changer transitions 0/586 dead transitions. [2022-11-23 04:04:09,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 586 transitions, 7416 flow [2022-11-23 04:04:09,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 04:04:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-23 04:04:09,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2475 transitions. [2022-11-23 04:04:09,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2022-11-23 04:04:09,562 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2475 transitions. [2022-11-23 04:04:09,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2475 transitions. [2022-11-23 04:04:09,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:04:09,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2475 transitions. [2022-11-23 04:04:09,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 112.5) internal successors, (2475), 22 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:09,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 238.0) internal successors, (5474), 23 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:09,579 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 238.0) internal successors, (5474), 23 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:09,579 INFO L175 Difference]: Start difference. First operand has 130 places, 183 transitions, 2897 flow. Second operand 22 states and 2475 transitions. [2022-11-23 04:04:09,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 586 transitions, 7416 flow [2022-11-23 04:04:22,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 586 transitions, 7125 flow, removed 141 selfloop flow, removed 3 redundant places. [2022-11-23 04:04:22,508 INFO L231 Difference]: Finished difference. Result has 156 places, 246 transitions, 4293 flow [2022-11-23 04:04:22,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2704, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4293, PETRI_PLACES=156, PETRI_TRANSITIONS=246} [2022-11-23 04:04:22,509 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2022-11-23 04:04:22,510 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 246 transitions, 4293 flow [2022-11-23 04:04:22,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:22,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:04:22,511 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:04:22,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 04:04:22,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-23 04:04:22,723 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:04:22,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:04:22,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1575156487, now seen corresponding path program 1 times [2022-11-23 04:04:22,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:04:22,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198842703] [2022-11-23 04:04:22,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:04:22,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:04:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:04:22,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:22,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:04:22,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198842703] [2022-11-23 04:04:22,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198842703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:04:22,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57827000] [2022-11-23 04:04:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:04:22,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:04:22,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:04:22,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:04:22,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 04:04:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:04:23,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 04:04:23,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:04:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:23,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:04:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:23,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57827000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:04:23,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:04:23,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-23 04:04:23,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662950868] [2022-11-23 04:04:23,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:04:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 04:04:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:04:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 04:04:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2022-11-23 04:04:23,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:04:23,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 246 transitions, 4293 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:23,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:04:23,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:04:23,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 04:04:35,248 INFO L130 PetriNetUnfolder]: 25529/38959 cut-off events. [2022-11-23 04:04:35,248 INFO L131 PetriNetUnfolder]: For 1203439/1203439 co-relation queries the response was YES. [2022-11-23 04:04:35,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281683 conditions, 38959 events. 25529/38959 cut-off events. For 1203439/1203439 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 280459 event pairs, 1297 based on Foata normal form. 1210/40169 useless extension candidates. Maximal degree in co-relation 281611. Up to 12166 conditions per place. [2022-11-23 04:04:36,111 INFO L137 encePairwiseOnDemand]: 232/238 looper letters, 398 selfloop transitions, 242 changer transitions 0/640 dead transitions. [2022-11-23 04:04:36,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 640 transitions, 9038 flow [2022-11-23 04:04:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 04:04:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-23 04:04:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2372 transitions. [2022-11-23 04:04:36,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47458983593437376 [2022-11-23 04:04:36,117 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2372 transitions. [2022-11-23 04:04:36,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2372 transitions. [2022-11-23 04:04:36,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 04:04:36,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2372 transitions. [2022-11-23 04:04:36,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 112.95238095238095) internal successors, (2372), 21 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:36,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 238.0) internal successors, (5236), 22 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:36,133 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 238.0) internal successors, (5236), 22 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:36,133 INFO L175 Difference]: Start difference. First operand has 156 places, 246 transitions, 4293 flow. Second operand 21 states and 2372 transitions. [2022-11-23 04:04:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 640 transitions, 9038 flow [2022-11-23 04:04:53,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 640 transitions, 8549 flow, removed 219 selfloop flow, removed 9 redundant places. [2022-11-23 04:04:53,591 INFO L231 Difference]: Finished difference. Result has 176 places, 312 transitions, 5952 flow [2022-11-23 04:04:53,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5952, PETRI_PLACES=176, PETRI_TRANSITIONS=312} [2022-11-23 04:04:53,592 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2022-11-23 04:04:53,592 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 312 transitions, 5952 flow [2022-11-23 04:04:53,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:53,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 04:04:53,594 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:04:53,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 04:04:53,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 04:04:53,794 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-23 04:04:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:04:53,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1832810197, now seen corresponding path program 2 times [2022-11-23 04:04:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:04:53,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787470160] [2022-11-23 04:04:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:04:53,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:04:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:04:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:53,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:04:53,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787470160] [2022-11-23 04:04:53,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787470160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:04:53,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712069961] [2022-11-23 04:04:53,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 04:04:53,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:04:53,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:04:53,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:04:53,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55661ead-816c-43b3-859b-4ebee8e1463b/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 04:04:54,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 04:04:54,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 04:04:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 04:04:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:04:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:54,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:04:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:04:54,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712069961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:04:54,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:04:54,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-23 04:04:54,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034499669] [2022-11-23 04:04:54,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:04:54,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 04:04:54,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:04:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 04:04:54,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2022-11-23 04:04:54,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 238 [2022-11-23 04:04:54,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 312 transitions, 5952 flow. Second operand has 23 states, 23 states have (on average 104.69565217391305) internal successors, (2408), 23 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:04:54,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 04:04:54,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 238 [2022-11-23 04:04:54,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand