./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:19:17,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:19:17,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:19:17,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:19:17,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:19:17,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:19:17,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:19:17,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:19:17,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:19:17,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:19:17,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:19:17,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:19:17,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:19:17,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:19:17,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:19:17,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:19:17,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:19:17,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:19:17,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:19:17,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:19:17,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:19:17,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:19:17,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:19:17,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:19:17,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:19:17,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:19:17,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:19:17,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:19:17,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:19:17,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:19:17,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:19:17,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:19:17,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:19:17,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:19:17,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:19:17,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:19:17,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:19:17,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:19:17,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:19:17,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:19:17,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:19:17,720 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:19:17,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:19:17,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:19:17,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:19:17,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:19:17,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:19:17,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:19:17,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:19:17,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:19:17,745 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:19:17,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:19:17,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:19:17,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:19:17,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:19:17,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:19:17,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:19:17,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:19:17,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:19:17,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:19:17,747 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:19:17,747 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:19:17,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:19:17,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:19:17,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:19:17,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:19:17,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:19:17,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:19:17,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:17,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:19:17,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:19:17,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:19:17,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:19:17,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:19:17,750 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:19:17,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:19:17,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:19:17,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-11-16 12:19:18,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:19:18,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:19:18,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:19:18,040 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:19:18,041 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:19:18,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-16 12:19:18,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/data/f7b8b3195/92d8e908eb90448d8c2d83aea8b1cee1/FLAG5b778aeaf [2022-11-16 12:19:18,614 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:19:18,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-11-16 12:19:18,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/data/f7b8b3195/92d8e908eb90448d8c2d83aea8b1cee1/FLAG5b778aeaf [2022-11-16 12:19:18,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/data/f7b8b3195/92d8e908eb90448d8c2d83aea8b1cee1 [2022-11-16 12:19:18,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:19:18,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:19:18,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:18,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:19:18,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:19:18,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:18" (1/1) ... [2022-11-16 12:19:18,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797376b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:18, skipping insertion in model container [2022-11-16 12:19:18,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:18" (1/1) ... [2022-11-16 12:19:18,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:19:19,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:19:19,261 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-16 12:19:19,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:19,280 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:19:19,306 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-11-16 12:19:19,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:19,337 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:19:19,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19 WrapperNode [2022-11-16 12:19:19,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:19,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:19,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:19:19,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:19:19,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,416 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 328 [2022-11-16 12:19:19,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:19,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:19:19,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:19:19,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:19:19,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:19:19,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:19:19,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:19:19,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:19:19,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (1/1) ... [2022-11-16 12:19:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:19:19,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:19,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:19:19,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:19:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:19:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:19:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:19:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:19:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:19:19,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:19:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:19:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:19:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:19:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:19:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:19:19,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:19:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:19:19,583 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:19:19,760 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:19:19,765 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:19:20,489 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:19:20,503 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:19:20,504 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:19:20,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:20 BoogieIcfgContainer [2022-11-16 12:19:20,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:19:20,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:19:20,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:19:20,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:19:20,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:19:18" (1/3) ... [2022-11-16 12:19:20,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cac621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:20, skipping insertion in model container [2022-11-16 12:19:20,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:19" (2/3) ... [2022-11-16 12:19:20,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cac621 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:19:20, skipping insertion in model container [2022-11-16 12:19:20,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:20" (3/3) ... [2022-11-16 12:19:20,517 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-11-16 12:19:20,526 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:19:20,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:19:20,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-16 12:19:20,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:19:20,708 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:19:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 453 transitions, 922 flow [2022-11-16 12:19:20,948 INFO L130 PetriNetUnfolder]: 32/451 cut-off events. [2022-11-16 12:19:20,948 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:19:20,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 451 events. 32/451 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 602 event pairs, 0 based on Foata normal form. 0/389 useless extension candidates. Maximal degree in co-relation 347. Up to 2 conditions per place. [2022-11-16 12:19:20,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 453 transitions, 922 flow [2022-11-16 12:19:20,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 433 transitions, 878 flow [2022-11-16 12:19:20,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:19:20,989 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;@1710e479, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:19:20,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-16 12:19:21,000 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-16 12:19:21,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:19:21,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:21,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:21,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:21,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1563945764, now seen corresponding path program 1 times [2022-11-16 12:19:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:21,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870141869] [2022-11-16 12:19:21,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:21,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:21,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870141869] [2022-11-16 12:19:21,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870141869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:21,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:21,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:19:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642269846] [2022-11-16 12:19:21,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:21,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:19:21,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:21,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:19:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:19:21,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 453 [2022-11-16 12:19:21,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 433 transitions, 878 flow. Second operand has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:21,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:21,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 453 [2022-11-16 12:19:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:21,980 INFO L130 PetriNetUnfolder]: 43/730 cut-off events. [2022-11-16 12:19:21,981 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-16 12:19:21,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 730 events. 43/730 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2767 event pairs, 15 based on Foata normal form. 31/655 useless extension candidates. Maximal degree in co-relation 504. Up to 90 conditions per place. [2022-11-16 12:19:21,994 INFO L137 encePairwiseOnDemand]: 423/453 looper letters, 58 selfloop transitions, 5 changer transitions 14/410 dead transitions. [2022-11-16 12:19:21,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 410 transitions, 982 flow [2022-11-16 12:19:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:19:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:19:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2186 transitions. [2022-11-16 12:19:22,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8042678440029434 [2022-11-16 12:19:22,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2186 transitions. [2022-11-16 12:19:22,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2186 transitions. [2022-11-16 12:19:22,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:22,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2186 transitions. [2022-11-16 12:19:22,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 364.3333333333333) internal successors, (2186), 6 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,059 INFO L175 Difference]: Start difference. First operand has 409 places, 433 transitions, 878 flow. Second operand 6 states and 2186 transitions. [2022-11-16 12:19:22,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 410 transitions, 982 flow [2022-11-16 12:19:22,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 410 transitions, 974 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:19:22,081 INFO L231 Difference]: Finished difference. Result has 406 places, 396 transitions, 805 flow [2022-11-16 12:19:22,084 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=805, PETRI_PLACES=406, PETRI_TRANSITIONS=396} [2022-11-16 12:19:22,089 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -3 predicate places. [2022-11-16 12:19:22,090 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 396 transitions, 805 flow [2022-11-16 12:19:22,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 351.0) internal successors, (1755), 5 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,091 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:22,092 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:22,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:19:22,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1237679271, now seen corresponding path program 1 times [2022-11-16 12:19:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:22,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285900224] [2022-11-16 12:19:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:22,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:22,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:22,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285900224] [2022-11-16 12:19:22,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285900224] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:22,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:22,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:22,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810674946] [2022-11-16 12:19:22,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:22,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:19:22,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:22,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:19:22,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:19:22,307 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 453 [2022-11-16 12:19:22,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 396 transitions, 805 flow. Second operand has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:22,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 453 [2022-11-16 12:19:22,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:22,535 INFO L130 PetriNetUnfolder]: 43/714 cut-off events. [2022-11-16 12:19:22,536 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-16 12:19:22,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 714 events. 43/714 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2665 event pairs, 15 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 697. Up to 50 conditions per place. [2022-11-16 12:19:22,542 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 19 selfloop transitions, 3 changer transitions 0/394 dead transitions. [2022-11-16 12:19:22,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 394 transitions, 845 flow [2022-11-16 12:19:22,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:19:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:19:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2022-11-16 12:19:22,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028697571743929 [2022-11-16 12:19:22,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2022-11-16 12:19:22,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2022-11-16 12:19:22,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:22,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2022-11-16 12:19:22,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,561 INFO L175 Difference]: Start difference. First operand has 406 places, 396 transitions, 805 flow. Second operand 4 states and 1636 transitions. [2022-11-16 12:19:22,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 394 transitions, 845 flow [2022-11-16 12:19:22,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 394 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:19:22,570 INFO L231 Difference]: Finished difference. Result has 388 places, 394 transitions, 797 flow [2022-11-16 12:19:22,571 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=797, PETRI_PLACES=388, PETRI_TRANSITIONS=394} [2022-11-16 12:19:22,572 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -21 predicate places. [2022-11-16 12:19:22,572 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 394 transitions, 797 flow [2022-11-16 12:19:22,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,574 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:22,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:22,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:19:22,575 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:22,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash 231550616, now seen corresponding path program 1 times [2022-11-16 12:19:22,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:22,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022420463] [2022-11-16 12:19:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:22,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:22,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:22,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022420463] [2022-11-16 12:19:22,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022420463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:22,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:22,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48221624] [2022-11-16 12:19:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:22,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:19:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:22,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:19:22,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:19:22,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-16 12:19:22,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 394 transitions, 797 flow. Second operand has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:22,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-16 12:19:22,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:22,973 INFO L130 PetriNetUnfolder]: 23/676 cut-off events. [2022-11-16 12:19:22,974 INFO L131 PetriNetUnfolder]: For 2/4 co-relation queries the response was YES. [2022-11-16 12:19:22,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 676 events. 23/676 cut-off events. For 2/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1857 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 698. Up to 29 conditions per place. [2022-11-16 12:19:22,979 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 38 selfloop transitions, 9 changer transitions 0/414 dead transitions. [2022-11-16 12:19:22,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 414 transitions, 934 flow [2022-11-16 12:19:22,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:19:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:19:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2061 transitions. [2022-11-16 12:19:22,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909933774834437 [2022-11-16 12:19:22,984 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2061 transitions. [2022-11-16 12:19:22,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2061 transitions. [2022-11-16 12:19:22,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:22,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2061 transitions. [2022-11-16 12:19:22,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:22,997 INFO L175 Difference]: Start difference. First operand has 388 places, 394 transitions, 797 flow. Second operand 5 states and 2061 transitions. [2022-11-16 12:19:22,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 414 transitions, 934 flow [2022-11-16 12:19:23,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 414 transitions, 928 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:19:23,005 INFO L231 Difference]: Finished difference. Result has 392 places, 401 transitions, 858 flow [2022-11-16 12:19:23,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=858, PETRI_PLACES=392, PETRI_TRANSITIONS=401} [2022-11-16 12:19:23,007 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -17 predicate places. [2022-11-16 12:19:23,007 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 401 transitions, 858 flow [2022-11-16 12:19:23,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:23,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:23,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:23,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:19:23,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:23,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash 849207529, now seen corresponding path program 1 times [2022-11-16 12:19:23,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:23,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049276554] [2022-11-16 12:19:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:23,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049276554] [2022-11-16 12:19:23,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049276554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:23,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:23,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:19:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514229066] [2022-11-16 12:19:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:23,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:19:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:19:23,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:19:23,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 453 [2022-11-16 12:19:23,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 401 transitions, 858 flow. Second operand has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:23,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:23,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 453 [2022-11-16 12:19:23,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:23,917 INFO L130 PetriNetUnfolder]: 211/2512 cut-off events. [2022-11-16 12:19:23,918 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-16 12:19:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2884 conditions, 2512 events. 211/2512 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 19394 event pairs, 96 based on Foata normal form. 0/2122 useless extension candidates. Maximal degree in co-relation 1499. Up to 308 conditions per place. [2022-11-16 12:19:23,932 INFO L137 encePairwiseOnDemand]: 446/453 looper letters, 72 selfloop transitions, 5 changer transitions 0/399 dead transitions. [2022-11-16 12:19:23,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 399 transitions, 1008 flow [2022-11-16 12:19:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:19:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:19:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2059 transitions. [2022-11-16 12:19:23,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7575423105224429 [2022-11-16 12:19:23,937 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2059 transitions. [2022-11-16 12:19:23,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2059 transitions. [2022-11-16 12:19:23,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:23,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2059 transitions. [2022-11-16 12:19:23,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 343.1666666666667) internal successors, (2059), 6 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:23,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:23,952 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 453.0) internal successors, (3171), 7 states have internal predecessors, (3171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:23,952 INFO L175 Difference]: Start difference. First operand has 392 places, 401 transitions, 858 flow. Second operand 6 states and 2059 transitions. [2022-11-16 12:19:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 399 transitions, 1008 flow [2022-11-16 12:19:23,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 399 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:19:23,961 INFO L231 Difference]: Finished difference. Result has 394 places, 399 transitions, 859 flow [2022-11-16 12:19:23,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=859, PETRI_PLACES=394, PETRI_TRANSITIONS=399} [2022-11-16 12:19:23,963 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -15 predicate places. [2022-11-16 12:19:23,963 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 399 transitions, 859 flow [2022-11-16 12:19:23,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.6666666666667) internal successors, (2008), 6 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:23,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:23,965 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:23,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:19:23,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:23,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash 555630252, now seen corresponding path program 1 times [2022-11-16 12:19:23,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:23,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412682619] [2022-11-16 12:19:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:23,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:24,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412682619] [2022-11-16 12:19:24,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412682619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:24,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:24,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481627751] [2022-11-16 12:19:24,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:24,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:19:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:19:24,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:19:24,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 453 [2022-11-16 12:19:24,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 399 transitions, 859 flow. Second operand has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:24,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 453 [2022-11-16 12:19:24,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:24,355 INFO L130 PetriNetUnfolder]: 93/1432 cut-off events. [2022-11-16 12:19:24,355 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-16 12:19:24,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1574 conditions, 1432 events. 93/1432 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 8141 event pairs, 30 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 1489. Up to 95 conditions per place. [2022-11-16 12:19:24,364 INFO L137 encePairwiseOnDemand]: 448/453 looper letters, 19 selfloop transitions, 3 changer transitions 0/397 dead transitions. [2022-11-16 12:19:24,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 397 transitions, 899 flow [2022-11-16 12:19:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:19:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:19:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1636 transitions. [2022-11-16 12:19:24,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9028697571743929 [2022-11-16 12:19:24,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1636 transitions. [2022-11-16 12:19:24,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1636 transitions. [2022-11-16 12:19:24,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:24,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1636 transitions. [2022-11-16 12:19:24,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,377 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 453.0) internal successors, (2265), 5 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,378 INFO L175 Difference]: Start difference. First operand has 394 places, 399 transitions, 859 flow. Second operand 4 states and 1636 transitions. [2022-11-16 12:19:24,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 397 transitions, 899 flow [2022-11-16 12:19:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 397 transitions, 890 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:19:24,386 INFO L231 Difference]: Finished difference. Result has 391 places, 397 transitions, 852 flow [2022-11-16 12:19:24,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=852, PETRI_PLACES=391, PETRI_TRANSITIONS=397} [2022-11-16 12:19:24,388 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -18 predicate places. [2022-11-16 12:19:24,388 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 397 transitions, 852 flow [2022-11-16 12:19:24,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 405.25) internal successors, (1621), 4 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:24,389 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:24,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:19:24,390 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:24,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash -640647585, now seen corresponding path program 1 times [2022-11-16 12:19:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:24,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559011374] [2022-11-16 12:19:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:24,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:24,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559011374] [2022-11-16 12:19:24,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559011374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:24,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019879211] [2022-11-16 12:19:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:24,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:24,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:24,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:24,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:19:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:24,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:19:24,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:24,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:24,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019879211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:19:24,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:19:24,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:19:24,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646573408] [2022-11-16 12:19:24,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:24,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:19:24,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:19:24,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:19:24,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-16 12:19:24,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 397 transitions, 852 flow. Second operand has 12 states, 12 states have (on average 404.6666666666667) internal successors, (4856), 12 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:24,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:24,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-16 12:19:24,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:25,528 INFO L130 PetriNetUnfolder]: 56/1506 cut-off events. [2022-11-16 12:19:25,529 INFO L131 PetriNetUnfolder]: For 28/33 co-relation queries the response was YES. [2022-11-16 12:19:25,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 1506 events. 56/1506 cut-off events. For 28/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7504 event pairs, 0 based on Foata normal form. 6/1352 useless extension candidates. Maximal degree in co-relation 1639. Up to 22 conditions per place. [2022-11-16 12:19:25,538 INFO L137 encePairwiseOnDemand]: 438/453 looper letters, 71 selfloop transitions, 40 changer transitions 0/474 dead transitions. [2022-11-16 12:19:25,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 474 transitions, 1290 flow [2022-11-16 12:19:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:19:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:19:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7353 transitions. [2022-11-16 12:19:25,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017660044150111 [2022-11-16 12:19:25,553 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7353 transitions. [2022-11-16 12:19:25,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7353 transitions. [2022-11-16 12:19:25,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:25,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7353 transitions. [2022-11-16 12:19:25,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 408.5) internal successors, (7353), 18 states have internal predecessors, (7353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:25,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:25,588 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 453.0) internal successors, (8607), 19 states have internal predecessors, (8607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:25,588 INFO L175 Difference]: Start difference. First operand has 391 places, 397 transitions, 852 flow. Second operand 18 states and 7353 transitions. [2022-11-16 12:19:25,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 474 transitions, 1290 flow [2022-11-16 12:19:25,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 474 transitions, 1284 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:19:25,597 INFO L231 Difference]: Finished difference. Result has 409 places, 424 transitions, 1084 flow [2022-11-16 12:19:25,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1084, PETRI_PLACES=409, PETRI_TRANSITIONS=424} [2022-11-16 12:19:25,599 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 0 predicate places. [2022-11-16 12:19:25,599 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 424 transitions, 1084 flow [2022-11-16 12:19:25,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 404.6666666666667) internal successors, (4856), 12 states have internal predecessors, (4856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:25,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:25,602 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:25,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:25,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:19:25,808 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1614762047, now seen corresponding path program 1 times [2022-11-16 12:19:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:25,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75789114] [2022-11-16 12:19:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:25,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:25,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75789114] [2022-11-16 12:19:25,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75789114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:25,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884403054] [2022-11-16 12:19:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:25,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:25,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:25,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:25,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:19:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:26,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:19:26,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:26,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:26,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884403054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:26,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:26,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:19:26,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745189260] [2022-11-16 12:19:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:26,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:19:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:19:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:19:26,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-16 12:19:26,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 424 transitions, 1084 flow. Second operand has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:26,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:26,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-16 12:19:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:26,549 INFO L130 PetriNetUnfolder]: 56/1498 cut-off events. [2022-11-16 12:19:26,549 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-16 12:19:26,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 1498 events. 56/1498 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7466 event pairs, 0 based on Foata normal form. 8/1346 useless extension candidates. Maximal degree in co-relation 1646. Up to 44 conditions per place. [2022-11-16 12:19:26,561 INFO L137 encePairwiseOnDemand]: 442/453 looper letters, 39 selfloop transitions, 27 changer transitions 0/429 dead transitions. [2022-11-16 12:19:26,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 429 transitions, 1195 flow [2022-11-16 12:19:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:19:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:19:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2861 transitions. [2022-11-16 12:19:26,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902239041311889 [2022-11-16 12:19:26,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2861 transitions. [2022-11-16 12:19:26,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2861 transitions. [2022-11-16 12:19:26,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:26,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2861 transitions. [2022-11-16 12:19:26,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 408.7142857142857) internal successors, (2861), 7 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:26,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:26,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:26,582 INFO L175 Difference]: Start difference. First operand has 409 places, 424 transitions, 1084 flow. Second operand 7 states and 2861 transitions. [2022-11-16 12:19:26,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 429 transitions, 1195 flow [2022-11-16 12:19:26,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 429 transitions, 1121 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 12:19:26,593 INFO L231 Difference]: Finished difference. Result has 404 places, 416 transitions, 1010 flow [2022-11-16 12:19:26,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1010, PETRI_PLACES=404, PETRI_TRANSITIONS=416} [2022-11-16 12:19:26,595 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, -5 predicate places. [2022-11-16 12:19:26,595 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 416 transitions, 1010 flow [2022-11-16 12:19:26,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:26,596 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:26,597 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:26,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:26,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:19:26,802 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1391236696, now seen corresponding path program 2 times [2022-11-16 12:19:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:26,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248952540] [2022-11-16 12:19:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:27,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:27,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248952540] [2022-11-16 12:19:27,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248952540] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:27,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293250375] [2022-11-16 12:19:27,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:19:27,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:27,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:27,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:27,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:19:27,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:19:27,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:19:27,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:19:27,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:19:27,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:19:27,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293250375] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:19:27,543 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:19:27,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-16 12:19:27,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98425564] [2022-11-16 12:19:27,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:27,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:19:27,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:19:27,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:19:27,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 453 [2022-11-16 12:19:27,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 416 transitions, 1010 flow. Second operand has 17 states, 17 states have (on average 376.8235294117647) internal successors, (6406), 17 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:27,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:27,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 453 [2022-11-16 12:19:27,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:29,711 INFO L130 PetriNetUnfolder]: 295/4286 cut-off events. [2022-11-16 12:19:29,712 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-11-16 12:19:29,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4877 conditions, 4286 events. 295/4286 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 35548 event pairs, 105 based on Foata normal form. 4/3695 useless extension candidates. Maximal degree in co-relation 4797. Up to 70 conditions per place. [2022-11-16 12:19:29,740 INFO L137 encePairwiseOnDemand]: 433/453 looper letters, 157 selfloop transitions, 65 changer transitions 0/560 dead transitions. [2022-11-16 12:19:29,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 560 transitions, 1819 flow [2022-11-16 12:19:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 12:19:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-16 12:19:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 18130 transitions. [2022-11-16 12:19:29,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337932303164092 [2022-11-16 12:19:29,775 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 18130 transitions. [2022-11-16 12:19:29,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 18130 transitions. [2022-11-16 12:19:29,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:29,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 18130 transitions. [2022-11-16 12:19:29,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 377.7083333333333) internal successors, (18130), 48 states have internal predecessors, (18130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:29,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 453.0) internal successors, (22197), 49 states have internal predecessors, (22197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:29,865 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 453.0) internal successors, (22197), 49 states have internal predecessors, (22197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:29,865 INFO L175 Difference]: Start difference. First operand has 404 places, 416 transitions, 1010 flow. Second operand 48 states and 18130 transitions. [2022-11-16 12:19:29,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 560 transitions, 1819 flow [2022-11-16 12:19:29,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 560 transitions, 1776 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:19:29,876 INFO L231 Difference]: Finished difference. Result has 449 places, 441 transitions, 1225 flow [2022-11-16 12:19:29,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1225, PETRI_PLACES=449, PETRI_TRANSITIONS=441} [2022-11-16 12:19:29,878 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 40 predicate places. [2022-11-16 12:19:29,878 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 441 transitions, 1225 flow [2022-11-16 12:19:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 376.8235294117647) internal successors, (6406), 17 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:29,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:29,881 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:29,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:30,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:30,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:30,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2021710346, now seen corresponding path program 1 times [2022-11-16 12:19:30,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:30,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439130561] [2022-11-16 12:19:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:30,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:30,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:30,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439130561] [2022-11-16 12:19:30,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439130561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:30,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:30,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:19:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933024689] [2022-11-16 12:19:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:30,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:19:30,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:19:30,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:19:30,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-16 12:19:30,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 441 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:30,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:30,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-16 12:19:30,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:31,198 INFO L130 PetriNetUnfolder]: 141/3432 cut-off events. [2022-11-16 12:19:31,199 INFO L131 PetriNetUnfolder]: For 166/180 co-relation queries the response was YES. [2022-11-16 12:19:31,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3980 conditions, 3432 events. 141/3432 cut-off events. For 166/180 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 25832 event pairs, 0 based on Foata normal form. 0/3040 useless extension candidates. Maximal degree in co-relation 3897. Up to 197 conditions per place. [2022-11-16 12:19:31,233 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 38 selfloop transitions, 9 changer transitions 0/461 dead transitions. [2022-11-16 12:19:31,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 461 transitions, 1362 flow [2022-11-16 12:19:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:19:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:19:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2061 transitions. [2022-11-16 12:19:31,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909933774834437 [2022-11-16 12:19:31,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2061 transitions. [2022-11-16 12:19:31,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2061 transitions. [2022-11-16 12:19:31,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:31,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2061 transitions. [2022-11-16 12:19:31,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.2) internal successors, (2061), 5 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:31,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:31,252 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 453.0) internal successors, (2718), 6 states have internal predecessors, (2718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:31,252 INFO L175 Difference]: Start difference. First operand has 449 places, 441 transitions, 1225 flow. Second operand 5 states and 2061 transitions. [2022-11-16 12:19:31,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 461 transitions, 1362 flow [2022-11-16 12:19:31,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 461 transitions, 1279 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-16 12:19:31,267 INFO L231 Difference]: Finished difference. Result has 442 places, 448 transitions, 1209 flow [2022-11-16 12:19:31,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1209, PETRI_PLACES=442, PETRI_TRANSITIONS=448} [2022-11-16 12:19:31,269 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 33 predicate places. [2022-11-16 12:19:31,269 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 448 transitions, 1209 flow [2022-11-16 12:19:31,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 403.5) internal successors, (1614), 4 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:31,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:31,271 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:31,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:19:31,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:31,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash -53875402, now seen corresponding path program 1 times [2022-11-16 12:19:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:31,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094654444] [2022-11-16 12:19:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:31,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094654444] [2022-11-16 12:19:31,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094654444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:31,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808844317] [2022-11-16 12:19:31,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:31,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:31,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:31,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:31,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:19:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:31,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:19:31,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:19:31,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:31,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808844317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:31,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:31,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2022-11-16 12:19:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688821323] [2022-11-16 12:19:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:19:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:19:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:19:31,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 453 [2022-11-16 12:19:31,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 448 transitions, 1209 flow. Second operand has 9 states, 9 states have (on average 365.8888888888889) internal successors, (3293), 9 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:31,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:31,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 453 [2022-11-16 12:19:31,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:35,740 INFO L130 PetriNetUnfolder]: 1128/15384 cut-off events. [2022-11-16 12:19:35,740 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2022-11-16 12:19:35,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17699 conditions, 15384 events. 1128/15384 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 187434 event pairs, 420 based on Foata normal form. 0/13186 useless extension candidates. Maximal degree in co-relation 17610. Up to 851 conditions per place. [2022-11-16 12:19:35,839 INFO L137 encePairwiseOnDemand]: 440/453 looper letters, 147 selfloop transitions, 24 changer transitions 0/510 dead transitions. [2022-11-16 12:19:35,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 510 transitions, 1771 flow [2022-11-16 12:19:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:19:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:19:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4816 transitions. [2022-11-16 12:19:35,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8177958906435727 [2022-11-16 12:19:35,845 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4816 transitions. [2022-11-16 12:19:35,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4816 transitions. [2022-11-16 12:19:35,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:35,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4816 transitions. [2022-11-16 12:19:35,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 370.46153846153845) internal successors, (4816), 13 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 453.0) internal successors, (6342), 14 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,865 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 453.0) internal successors, (6342), 14 states have internal predecessors, (6342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,865 INFO L175 Difference]: Start difference. First operand has 442 places, 448 transitions, 1209 flow. Second operand 13 states and 4816 transitions. [2022-11-16 12:19:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 510 transitions, 1771 flow [2022-11-16 12:19:35,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 510 transitions, 1763 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:19:35,878 INFO L231 Difference]: Finished difference. Result has 459 places, 454 transitions, 1296 flow [2022-11-16 12:19:35,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1296, PETRI_PLACES=459, PETRI_TRANSITIONS=454} [2022-11-16 12:19:35,880 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 50 predicate places. [2022-11-16 12:19:35,880 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 454 transitions, 1296 flow [2022-11-16 12:19:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 365.8888888888889) internal successors, (3293), 9 states have internal predecessors, (3293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:35,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:35,881 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:35,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:19:36,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:36,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:36,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2132495951, now seen corresponding path program 1 times [2022-11-16 12:19:36,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:36,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702192941] [2022-11-16 12:19:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:36,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:36,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:19:36,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:36,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702192941] [2022-11-16 12:19:36,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702192941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:36,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220380920] [2022-11-16 12:19:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:36,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:36,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:36,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:36,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:19:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:36,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:19:36,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:36,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:37,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220380920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:19:37,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:19:37,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-16 12:19:37,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365324728] [2022-11-16 12:19:37,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:37,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:19:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:37,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:19:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:19:37,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 453 [2022-11-16 12:19:37,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 454 transitions, 1296 flow. Second operand has 25 states, 25 states have (on average 346.56) internal successors, (8664), 25 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:37,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:37,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 453 [2022-11-16 12:19:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:45,000 INFO L130 PetriNetUnfolder]: 2514/33622 cut-off events. [2022-11-16 12:19:45,000 INFO L131 PetriNetUnfolder]: For 1092/1092 co-relation queries the response was YES. [2022-11-16 12:19:45,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38840 conditions, 33622 events. 2514/33622 cut-off events. For 1092/1092 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 481130 event pairs, 945 based on Foata normal form. 35/28743 useless extension candidates. Maximal degree in co-relation 38745. Up to 630 conditions per place. [2022-11-16 12:19:45,303 INFO L137 encePairwiseOnDemand]: 420/453 looper letters, 232 selfloop transitions, 91 changer transitions 0/630 dead transitions. [2022-11-16 12:19:45,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 630 transitions, 2528 flow [2022-11-16 12:19:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-16 12:19:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-16 12:19:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 14616 transitions. [2022-11-16 12:19:45,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7682119205298014 [2022-11-16 12:19:45,593 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 14616 transitions. [2022-11-16 12:19:45,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 14616 transitions. [2022-11-16 12:19:45,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:45,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 14616 transitions. [2022-11-16 12:19:45,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 348.0) internal successors, (14616), 42 states have internal predecessors, (14616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 453.0) internal successors, (19479), 43 states have internal predecessors, (19479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,752 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 453.0) internal successors, (19479), 43 states have internal predecessors, (19479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,762 INFO L175 Difference]: Start difference. First operand has 459 places, 454 transitions, 1296 flow. Second operand 42 states and 14616 transitions. [2022-11-16 12:19:45,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 630 transitions, 2528 flow [2022-11-16 12:19:45,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 630 transitions, 2506 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:19:45,782 INFO L231 Difference]: Finished difference. Result has 510 places, 500 transitions, 1804 flow [2022-11-16 12:19:45,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1275, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1804, PETRI_PLACES=510, PETRI_TRANSITIONS=500} [2022-11-16 12:19:45,784 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 101 predicate places. [2022-11-16 12:19:45,784 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 500 transitions, 1804 flow [2022-11-16 12:19:45,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 346.56) internal successors, (8664), 25 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:45,787 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:45,787 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:45,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:45,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:19:45,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:45,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1508901301, now seen corresponding path program 1 times [2022-11-16 12:19:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:45,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287221559] [2022-11-16 12:19:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:45,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287221559] [2022-11-16 12:19:46,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287221559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:46,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047917310] [2022-11-16 12:19:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:46,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:46,392 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:46,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:19:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:19:46,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:46,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:19:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:46,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047917310] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:19:46,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:19:46,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 12:19:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097766171] [2022-11-16 12:19:46,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:19:46,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:19:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:19:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:19:46,989 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-16 12:19:46,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 500 transitions, 1804 flow. Second operand has 32 states, 32 states have (on average 405.28125) internal successors, (12969), 32 states have internal predecessors, (12969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:46,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:47,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-16 12:19:47,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:19:55,287 INFO L130 PetriNetUnfolder]: 1201/28701 cut-off events. [2022-11-16 12:19:55,288 INFO L131 PetriNetUnfolder]: For 4434/4569 co-relation queries the response was YES. [2022-11-16 12:19:55,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34494 conditions, 28701 events. 1201/28701 cut-off events. For 4434/4569 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 369596 event pairs, 0 based on Foata normal form. 24/25485 useless extension candidates. Maximal degree in co-relation 34386. Up to 376 conditions per place. [2022-11-16 12:19:55,557 INFO L137 encePairwiseOnDemand]: 441/453 looper letters, 216 selfloop transitions, 116 changer transitions 0/749 dead transitions. [2022-11-16 12:19:55,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 749 transitions, 3671 flow [2022-11-16 12:19:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:19:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 12:19:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 17998 transitions. [2022-11-16 12:19:55,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9029700983343367 [2022-11-16 12:19:55,579 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 17998 transitions. [2022-11-16 12:19:55,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 17998 transitions. [2022-11-16 12:19:55,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:19:55,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 17998 transitions. [2022-11-16 12:19:55,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 409.04545454545456) internal successors, (17998), 44 states have internal predecessors, (17998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:55,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 453.0) internal successors, (20385), 45 states have internal predecessors, (20385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:55,637 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 453.0) internal successors, (20385), 45 states have internal predecessors, (20385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:55,638 INFO L175 Difference]: Start difference. First operand has 510 places, 500 transitions, 1804 flow. Second operand 44 states and 17998 transitions. [2022-11-16 12:19:55,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 749 transitions, 3671 flow [2022-11-16 12:19:55,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 749 transitions, 3546 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-11-16 12:19:55,699 INFO L231 Difference]: Finished difference. Result has 549 places, 568 transitions, 2514 flow [2022-11-16 12:19:55,700 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2514, PETRI_PLACES=549, PETRI_TRANSITIONS=568} [2022-11-16 12:19:55,701 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 140 predicate places. [2022-11-16 12:19:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 568 transitions, 2514 flow [2022-11-16 12:19:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 405.28125) internal successors, (12969), 32 states have internal predecessors, (12969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:55,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:19:55,705 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:55,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:19:55,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:19:55,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:19:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash 661656874, now seen corresponding path program 1 times [2022-11-16 12:19:55,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:55,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907179886] [2022-11-16 12:19:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:55,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:19:56,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:56,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907179886] [2022-11-16 12:19:56,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907179886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:19:56,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884073118] [2022-11-16 12:19:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:56,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:19:56,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:56,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:19:56,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:19:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:56,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:19:56,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:19:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:19:56,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:19:56,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884073118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:56,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:19:56,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:19:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730402837] [2022-11-16 12:19:56,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:56,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:19:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:56,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:19:56,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:19:56,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 453 [2022-11-16 12:19:56,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 568 transitions, 2514 flow. Second operand has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:19:56,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:19:56,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 453 [2022-11-16 12:19:56,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:20:03,869 INFO L130 PetriNetUnfolder]: 1201/28581 cut-off events. [2022-11-16 12:20:03,869 INFO L131 PetriNetUnfolder]: For 4608/4743 co-relation queries the response was YES. [2022-11-16 12:20:04,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35205 conditions, 28581 events. 1201/28581 cut-off events. For 4608/4743 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 367790 event pairs, 0 based on Foata normal form. 120/25461 useless extension candidates. Maximal degree in co-relation 35088. Up to 840 conditions per place. [2022-11-16 12:20:04,419 INFO L137 encePairwiseOnDemand]: 442/453 looper letters, 41 selfloop transitions, 33 changer transitions 0/574 dead transitions. [2022-11-16 12:20:04,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 574 transitions, 2653 flow [2022-11-16 12:20:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:20:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:20:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2861 transitions. [2022-11-16 12:20:04,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.902239041311889 [2022-11-16 12:20:04,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2861 transitions. [2022-11-16 12:20:04,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2861 transitions. [2022-11-16 12:20:04,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:20:04,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2861 transitions. [2022-11-16 12:20:04,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 408.7142857142857) internal successors, (2861), 7 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 453.0) internal successors, (3624), 8 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,437 INFO L175 Difference]: Start difference. First operand has 549 places, 568 transitions, 2514 flow. Second operand 7 states and 2861 transitions. [2022-11-16 12:20:04,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 574 transitions, 2653 flow [2022-11-16 12:20:04,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 574 transitions, 2570 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-16 12:20:04,488 INFO L231 Difference]: Finished difference. Result has 538 places, 563 transitions, 2459 flow [2022-11-16 12:20:04,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=453, PETRI_DIFFERENCE_MINUEND_FLOW=2393, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2459, PETRI_PLACES=538, PETRI_TRANSITIONS=563} [2022-11-16 12:20:04,490 INFO L288 CegarLoopForPetriNet]: 409 programPoint places, 129 predicate places. [2022-11-16 12:20:04,490 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 563 transitions, 2459 flow [2022-11-16 12:20:04,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 404.3333333333333) internal successors, (2426), 6 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:04,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:20:04,492 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:04,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:20:04,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:20:04,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-11-16 12:20:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1740341098, now seen corresponding path program 2 times [2022-11-16 12:20:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:04,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577588114] [2022-11-16 12:20:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:05,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577588114] [2022-11-16 12:20:05,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577588114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:20:05,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911283853] [2022-11-16 12:20:05,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:20:05,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:20:05,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:20:05,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:20:05,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f6f234-3c53-4b8a-8f47-3360ed45ca9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:20:05,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:20:05,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:20:05,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:20:05,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:05,594 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:20:05,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:20:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 12:20:05,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911283853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:20:05,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:20:05,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 22 [2022-11-16 12:20:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678160227] [2022-11-16 12:20:05,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:20:05,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:20:05,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:05,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:20:05,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:20:05,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 453 [2022-11-16 12:20:05,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 563 transitions, 2459 flow. Second operand has 22 states, 22 states have (on average 346.8181818181818) internal successors, (7630), 22 states have internal predecessors, (7630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:20:05,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:20:05,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 453 [2022-11-16 12:20:05,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand