./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 16:47:04,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:47:04,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:47:04,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:47:04,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:47:04,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:47:04,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:47:04,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:47:04,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:47:04,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:47:04,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:47:04,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:47:04,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:47:04,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:47:04,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:47:04,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:47:04,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:47:04,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:47:04,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:47:04,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:47:04,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:47:04,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:47:04,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:47:04,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:47:04,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:47:04,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:47:04,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:47:04,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:47:04,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:47:04,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:47:04,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:47:04,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:47:04,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:47:04,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:47:04,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:47:04,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:47:04,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:47:04,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:47:04,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:47:04,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:47:04,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:47:04,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 16:47:04,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:47:04,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:47:04,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:47:04,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:47:04,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:47:04,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:47:04,792 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:47:04,792 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:47:04,792 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:47:04,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:47:04,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:47:04,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:47:04,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:47:04,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:47:04,795 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:47:04,796 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:47:04,796 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-12-13 16:47:04,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:47:04,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:47:04,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:47:04,997 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:47:04,997 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:47:04,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 16:47:07,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:47:07,704 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:47:07,704 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-12-13 16:47:07,710 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/data/fa3ae012e/e1cd23e886d44a28b0a366880ee85327/FLAG57300df9d [2022-12-13 16:47:07,720 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/data/fa3ae012e/e1cd23e886d44a28b0a366880ee85327 [2022-12-13 16:47:07,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:47:07,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:47:07,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:47:07,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:47:07,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:47:07,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:07,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d8a2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07, skipping insertion in model container [2022-12-13 16:47:07,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:07,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:47:07,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:47:07,877 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 16:47:07,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:47:07,896 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:47:07,927 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-12-13 16:47:07,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:47:07,948 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:47:07,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07 WrapperNode [2022-12-13 16:47:07,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:47:07,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:47:07,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:47:07,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:47:07,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:07,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:07,991 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2022-12-13 16:47:07,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:47:07,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:47:07,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:47:07,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:47:07,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:07,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,017 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:47:08,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:47:08,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:47:08,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:47:08,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (1/1) ... [2022-12-13 16:47:08,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:47:08,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:47:08,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:47:08,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:47:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:47:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:47:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:47:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:47:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:47:08,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:47:08,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:47:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:47:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:47:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:47:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:47:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:47:08,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:47:08,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:47:08,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:47:08,095 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 16:47:08,196 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:47:08,198 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:47:08,722 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:47:08,739 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:47:08,739 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 16:47:08,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:47:08 BoogieIcfgContainer [2022-12-13 16:47:08,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:47:08,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:47:08,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:47:08,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:47:08,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:47:07" (1/3) ... [2022-12-13 16:47:08,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f334603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:47:08, skipping insertion in model container [2022-12-13 16:47:08,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:47:07" (2/3) ... [2022-12-13 16:47:08,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f334603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:47:08, skipping insertion in model container [2022-12-13 16:47:08,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:47:08" (3/3) ... [2022-12-13 16:47:08,750 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-12-13 16:47:08,757 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:47:08,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:47:08,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-12-13 16:47:08,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:47:08,872 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:47:08,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 657 transitions, 1338 flow [2022-12-13 16:47:09,153 INFO L130 PetriNetUnfolder]: 47/654 cut-off events. [2022-12-13 16:47:09,153 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:47:09,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 654 events. 47/654 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1089 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-12-13 16:47:09,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 657 transitions, 1338 flow [2022-12-13 16:47:09,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 633 transitions, 1281 flow [2022-12-13 16:47:09,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:47:09,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 597 places, 633 transitions, 1281 flow [2022-12-13 16:47:09,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 597 places, 633 transitions, 1281 flow [2022-12-13 16:47:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 633 transitions, 1281 flow [2022-12-13 16:47:09,356 INFO L130 PetriNetUnfolder]: 46/633 cut-off events. [2022-12-13 16:47:09,356 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 16:47:09,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 633 events. 46/633 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1084 event pairs, 0 based on Foata normal form. 0/545 useless extension candidates. Maximal degree in co-relation 551. Up to 2 conditions per place. [2022-12-13 16:47:09,375 INFO L119 LiptonReduction]: Number of co-enabled transitions 40128 [2022-12-13 16:47:35,513 INFO L134 LiptonReduction]: Checked pairs total: 48193 [2022-12-13 16:47:35,513 INFO L136 LiptonReduction]: Total number of compositions: 804 [2022-12-13 16:47:35,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:47:35,528 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;@2993349, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:47:35,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-12-13 16:47:35,529 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 16:47:35,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:47:35,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:35,530 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 16:47:35,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:35,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2584, now seen corresponding path program 1 times [2022-12-13 16:47:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:35,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113548298] [2022-12-13 16:47:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:35,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:35,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113548298] [2022-12-13 16:47:35,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113548298] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:35,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:35,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 16:47:35,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802907225] [2022-12-13 16:47:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:35,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 16:47:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 16:47:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 16:47:35,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1461 [2022-12-13 16:47:35,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 179 flow. Second operand has 2 states, 2 states have (on average 621.5) internal successors, (1243), 2 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:35,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:35,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1461 [2022-12-13 16:47:35,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:36,733 INFO L130 PetriNetUnfolder]: 4475/6364 cut-off events. [2022-12-13 16:47:36,733 INFO L131 PetriNetUnfolder]: For 296/296 co-relation queries the response was YES. [2022-12-13 16:47:36,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 6364 events. 4475/6364 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30367 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12104. Up to 6365 conditions per place. [2022-12-13 16:47:36,770 INFO L137 encePairwiseOnDemand]: 1453/1461 looper letters, 74 selfloop transitions, 0 changer transitions 0/74 dead transitions. [2022-12-13 16:47:36,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 311 flow [2022-12-13 16:47:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 16:47:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 16:47:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1324 transitions. [2022-12-13 16:47:36,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4531143052703628 [2022-12-13 16:47:36,792 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1324 transitions. [2022-12-13 16:47:36,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1324 transitions. [2022-12-13 16:47:36,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:36,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1324 transitions. [2022-12-13 16:47:36,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 662.0) internal successors, (1324), 2 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:36,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1461.0) internal successors, (4383), 3 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:36,814 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1461.0) internal successors, (4383), 3 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:36,816 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 179 flow. Second operand 2 states and 1324 transitions. [2022-12-13 16:47:36,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 311 flow [2022-12-13 16:47:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 16:47:36,824 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 154 flow [2022-12-13 16:47:36,826 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=154, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2022-12-13 16:47:36,829 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2022-12-13 16:47:36,829 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 154 flow [2022-12-13 16:47:36,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 621.5) internal successors, (1243), 2 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:36,830 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:36,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:47:36,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:47:36,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash 82465, now seen corresponding path program 1 times [2022-12-13 16:47:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:36,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938457209] [2022-12-13 16:47:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:36,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:36,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:36,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938457209] [2022-12-13 16:47:36,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938457209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:36,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:36,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089300104] [2022-12-13 16:47:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:37,012 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 1461 [2022-12-13 16:47:37,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:37,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:37,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 1461 [2022-12-13 16:47:37,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:37,855 INFO L130 PetriNetUnfolder]: 4475/6362 cut-off events. [2022-12-13 16:47:37,855 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 16:47:37,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12981 conditions, 6362 events. 4475/6362 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30401 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12978. Up to 6362 conditions per place. [2022-12-13 16:47:37,890 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 71 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2022-12-13 16:47:37,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 294 flow [2022-12-13 16:47:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:37,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1913 transitions. [2022-12-13 16:47:37,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43645904631530913 [2022-12-13 16:47:37,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1913 transitions. [2022-12-13 16:47:37,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1913 transitions. [2022-12-13 16:47:37,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:37,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1913 transitions. [2022-12-13 16:47:37,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.6666666666666) internal successors, (1913), 3 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:37,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:37,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:37,928 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 154 flow. Second operand 3 states and 1913 transitions. [2022-12-13 16:47:37,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 294 flow [2022-12-13 16:47:37,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 16:47:37,930 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 152 flow [2022-12-13 16:47:37,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2022-12-13 16:47:37,931 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2022-12-13 16:47:37,931 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 152 flow [2022-12-13 16:47:37,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:37,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:37,932 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:47:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:47:37,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash 82464, now seen corresponding path program 1 times [2022-12-13 16:47:37,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:37,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284885758] [2022-12-13 16:47:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:37,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:38,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:38,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284885758] [2022-12-13 16:47:38,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284885758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:38,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:38,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:38,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212394552] [2022-12-13 16:47:38,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:38,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:38,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:38,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:38,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 16:47:38,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 615.6666666666666) internal successors, (1847), 3 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:38,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:38,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 16:47:38,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:38,792 INFO L130 PetriNetUnfolder]: 4475/6360 cut-off events. [2022-12-13 16:47:38,792 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-13 16:47:38,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12979 conditions, 6360 events. 4475/6360 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 30385 event pairs, 3825 based on Foata normal form. 0/3340 useless extension candidates. Maximal degree in co-relation 12975. Up to 6360 conditions per place. [2022-12-13 16:47:38,810 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 69 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2022-12-13 16:47:38,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 288 flow [2022-12-13 16:47:38,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:38,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1917 transitions. [2022-12-13 16:47:38,816 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43737166324435317 [2022-12-13 16:47:38,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1917 transitions. [2022-12-13 16:47:38,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1917 transitions. [2022-12-13 16:47:38,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:38,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1917 transitions. [2022-12-13 16:47:38,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:38,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:38,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:38,826 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 152 flow. Second operand 3 states and 1917 transitions. [2022-12-13 16:47:38,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 288 flow [2022-12-13 16:47:38,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:47:38,827 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 149 flow [2022-12-13 16:47:38,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2022-12-13 16:47:38,828 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -13 predicate places. [2022-12-13 16:47:38,828 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 149 flow [2022-12-13 16:47:38,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 615.6666666666666) internal successors, (1847), 3 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:38,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:38,829 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:47:38,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:47:38,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash 82377, now seen corresponding path program 1 times [2022-12-13 16:47:38,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:38,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114231130] [2022-12-13 16:47:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:38,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:38,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114231130] [2022-12-13 16:47:38,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114231130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:38,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:38,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:38,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770403061] [2022-12-13 16:47:38,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:38,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:38,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 16:47:38,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 612.6666666666666) internal successors, (1838), 3 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:38,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:38,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 16:47:38,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:40,412 INFO L130 PetriNetUnfolder]: 8952/12716 cut-off events. [2022-12-13 16:47:40,412 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 16:47:40,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25946 conditions, 12716 events. 8952/12716 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 67648 event pairs, 7650 based on Foata normal form. 0/6679 useless extension candidates. Maximal degree in co-relation 25942. Up to 6359 conditions per place. [2022-12-13 16:47:40,453 INFO L137 encePairwiseOnDemand]: 1449/1461 looper letters, 127 selfloop transitions, 9 changer transitions 0/136 dead transitions. [2022-12-13 16:47:40,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 136 transitions, 559 flow [2022-12-13 16:47:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1975 transitions. [2022-12-13 16:47:40,461 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4506046087154917 [2022-12-13 16:47:40,462 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1975 transitions. [2022-12-13 16:47:40,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1975 transitions. [2022-12-13 16:47:40,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:40,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1975 transitions. [2022-12-13 16:47:40,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.3333333333334) internal successors, (1975), 3 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:40,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:40,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:40,475 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 149 flow. Second operand 3 states and 1975 transitions. [2022-12-13 16:47:40,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 136 transitions, 559 flow [2022-12-13 16:47:40,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 136 transitions, 558 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:47:40,477 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 222 flow [2022-12-13 16:47:40,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2022-12-13 16:47:40,478 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2022-12-13 16:47:40,478 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 222 flow [2022-12-13 16:47:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 612.6666666666666) internal successors, (1838), 3 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:40,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:40,479 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:47:40,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:47:40,479 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:40,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:40,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2558658, now seen corresponding path program 1 times [2022-12-13 16:47:40,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:40,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149476466] [2022-12-13 16:47:40,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:40,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:40,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:40,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149476466] [2022-12-13 16:47:40,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149476466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:40,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:40,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:47:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240294162] [2022-12-13 16:47:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:47:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:47:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:47:40,584 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 16:47:40,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 612.75) internal successors, (2451), 4 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:40,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:40,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 16:47:40,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:42,231 INFO L130 PetriNetUnfolder]: 8949/12710 cut-off events. [2022-12-13 16:47:42,231 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 16:47:42,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25955 conditions, 12710 events. 8949/12710 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67892 event pairs, 7650 based on Foata normal form. 2/6689 useless extension candidates. Maximal degree in co-relation 25950. Up to 6357 conditions per place. [2022-12-13 16:47:42,266 INFO L137 encePairwiseOnDemand]: 1452/1461 looper letters, 124 selfloop transitions, 6 changer transitions 0/130 dead transitions. [2022-12-13 16:47:42,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 130 transitions, 574 flow [2022-12-13 16:47:42,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:47:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:47:42,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2584 transitions. [2022-12-13 16:47:42,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44216290212183434 [2022-12-13 16:47:42,270 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2584 transitions. [2022-12-13 16:47:42,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2584 transitions. [2022-12-13 16:47:42,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:42,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2584 transitions. [2022-12-13 16:47:42,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 646.0) internal successors, (2584), 4 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:42,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:42,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:42,284 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 222 flow. Second operand 4 states and 2584 transitions. [2022-12-13 16:47:42,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 130 transitions, 574 flow [2022-12-13 16:47:42,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:47:42,287 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 192 flow [2022-12-13 16:47:42,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2022-12-13 16:47:42,287 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -12 predicate places. [2022-12-13 16:47:42,288 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 192 flow [2022-12-13 16:47:42,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 612.75) internal successors, (2451), 4 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:42,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:42,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:47:42,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:47:42,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:42,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2561175, now seen corresponding path program 1 times [2022-12-13 16:47:42,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:42,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520463012] [2022-12-13 16:47:42,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:42,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:42,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:42,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520463012] [2022-12-13 16:47:42,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520463012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:42,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:42,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:42,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581806307] [2022-12-13 16:47:42,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:42,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:42,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 16:47:42,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:42,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:42,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 16:47:42,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:44,016 INFO L130 PetriNetUnfolder]: 8949/12706 cut-off events. [2022-12-13 16:47:44,016 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 16:47:44,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25947 conditions, 12706 events. 8949/12706 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67880 event pairs, 7650 based on Foata normal form. 0/6687 useless extension candidates. Maximal degree in co-relation 25942. Up to 12706 conditions per place. [2022-12-13 16:47:44,052 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 69 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2022-12-13 16:47:44,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 328 flow [2022-12-13 16:47:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1912 transitions. [2022-12-13 16:47:44,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43623089208304816 [2022-12-13 16:47:44,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1912 transitions. [2022-12-13 16:47:44,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1912 transitions. [2022-12-13 16:47:44,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:44,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1912 transitions. [2022-12-13 16:47:44,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:44,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:44,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:44,062 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 192 flow. Second operand 3 states and 1912 transitions. [2022-12-13 16:47:44,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 328 flow [2022-12-13 16:47:44,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:47:44,064 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 183 flow [2022-12-13 16:47:44,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2022-12-13 16:47:44,065 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2022-12-13 16:47:44,065 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 183 flow [2022-12-13 16:47:44,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:44,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:44,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:47:44,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 16:47:44,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2561274, now seen corresponding path program 1 times [2022-12-13 16:47:44,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:44,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060924527] [2022-12-13 16:47:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:44,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:44,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:44,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060924527] [2022-12-13 16:47:44,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060924527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:44,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:44,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952713168] [2022-12-13 16:47:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:44,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:44,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:44,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 1461 [2022-12-13 16:47:44,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 614.0) internal successors, (1842), 3 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:44,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:44,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 1461 [2022-12-13 16:47:44,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:45,607 INFO L130 PetriNetUnfolder]: 8949/12702 cut-off events. [2022-12-13 16:47:45,608 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 16:47:45,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25937 conditions, 12702 events. 8949/12702 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 67851 event pairs, 7650 based on Foata normal form. 2/6685 useless extension candidates. Maximal degree in co-relation 25932. Up to 12702 conditions per place. [2022-12-13 16:47:45,652 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 67 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 16:47:45,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 315 flow [2022-12-13 16:47:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1904 transitions. [2022-12-13 16:47:45,659 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4344056582249601 [2022-12-13 16:47:45,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1904 transitions. [2022-12-13 16:47:45,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1904 transitions. [2022-12-13 16:47:45,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:45,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1904 transitions. [2022-12-13 16:47:45,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 634.6666666666666) internal successors, (1904), 3 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:45,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:45,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:45,676 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 183 flow. Second operand 3 states and 1904 transitions. [2022-12-13 16:47:45,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 315 flow [2022-12-13 16:47:45,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:47:45,678 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 180 flow [2022-12-13 16:47:45,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2022-12-13 16:47:45,679 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -15 predicate places. [2022-12-13 16:47:45,679 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 180 flow [2022-12-13 16:47:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 614.0) internal successors, (1842), 3 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:45,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:45,680 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:47:45,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 16:47:45,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2558657, now seen corresponding path program 1 times [2022-12-13 16:47:45,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:45,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898218370] [2022-12-13 16:47:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:45,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:45,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898218370] [2022-12-13 16:47:45,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898218370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:47:45,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761769985] [2022-12-13 16:47:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:45,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:47:45,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:47:45,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:47:45,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:47:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:45,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:47:45,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:47:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:45,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:47:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:45,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761769985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:47:45,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:47:45,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 16:47:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161497020] [2022-12-13 16:47:45,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:47:45,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:47:45,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:45,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:47:45,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:47:45,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 16:47:45,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 180 flow. Second operand has 7 states, 7 states have (on average 613.1428571428571) internal successors, (4292), 7 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:45,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:45,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 16:47:45,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:49,841 INFO L130 PetriNetUnfolder]: 22371/31749 cut-off events. [2022-12-13 16:47:49,841 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 16:47:49,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64809 conditions, 31749 events. 22371/31749 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 191618 event pairs, 19125 based on Foata normal form. 0/16709 useless extension candidates. Maximal degree in co-relation 64804. Up to 6355 conditions per place. [2022-12-13 16:47:49,947 INFO L137 encePairwiseOnDemand]: 1452/1461 looper letters, 278 selfloop transitions, 21 changer transitions 0/299 dead transitions. [2022-12-13 16:47:49,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 299 transitions, 1300 flow [2022-12-13 16:47:49,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:47:49,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:47:49,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3980 transitions. [2022-12-13 16:47:49,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4540269221994068 [2022-12-13 16:47:49,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3980 transitions. [2022-12-13 16:47:49,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3980 transitions. [2022-12-13 16:47:49,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:49,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3980 transitions. [2022-12-13 16:47:49,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 663.3333333333334) internal successors, (3980), 6 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:49,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1461.0) internal successors, (10227), 7 states have internal predecessors, (10227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:49,968 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1461.0) internal successors, (10227), 7 states have internal predecessors, (10227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:49,968 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 180 flow. Second operand 6 states and 3980 transitions. [2022-12-13 16:47:49,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 299 transitions, 1300 flow [2022-12-13 16:47:49,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 299 transitions, 1299 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:47:49,971 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 335 flow [2022-12-13 16:47:49,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=335, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2022-12-13 16:47:49,971 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 16:47:49,972 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 335 flow [2022-12-13 16:47:49,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 613.1428571428571) internal successors, (4292), 7 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:49,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:49,973 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:47:49,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:47:50,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:47:50,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 79404660, now seen corresponding path program 1 times [2022-12-13 16:47:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:50,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681760095] [2022-12-13 16:47:50,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:50,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:50,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:50,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681760095] [2022-12-13 16:47:50,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681760095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:50,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:50,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:50,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407265032] [2022-12-13 16:47:50,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:50,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:50,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 16:47:50,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:50,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:50,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 16:47:50,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:54,356 INFO L130 PetriNetUnfolder]: 22371/31744 cut-off events. [2022-12-13 16:47:54,356 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-12-13 16:47:54,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64850 conditions, 31744 events. 22371/31744 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 191599 event pairs, 19125 based on Foata normal form. 0/16714 useless extension candidates. Maximal degree in co-relation 64842. Up to 31744 conditions per place. [2022-12-13 16:47:54,517 INFO L137 encePairwiseOnDemand]: 1459/1461 looper letters, 81 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 16:47:54,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 497 flow [2022-12-13 16:47:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1908 transitions. [2022-12-13 16:47:54,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4353182751540041 [2022-12-13 16:47:54,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1908 transitions. [2022-12-13 16:47:54,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1908 transitions. [2022-12-13 16:47:54,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:54,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1908 transitions. [2022-12-13 16:47:54,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 636.0) internal successors, (1908), 3 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:54,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:54,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:54,530 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 335 flow. Second operand 3 states and 1908 transitions. [2022-12-13 16:47:54,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 497 flow [2022-12-13 16:47:54,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 467 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 16:47:54,533 INFO L231 Difference]: Finished difference. Result has 74 places, 82 transitions, 305 flow [2022-12-13 16:47:54,533 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2022-12-13 16:47:54,533 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 16:47:54,533 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 305 flow [2022-12-13 16:47:54,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:54,534 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:54,534 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 16:47:54,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:47:54,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash 79404661, now seen corresponding path program 1 times [2022-12-13 16:47:54,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:54,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115890666] [2022-12-13 16:47:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:54,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:54,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115890666] [2022-12-13 16:47:54,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115890666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:54,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:54,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:47:54,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253124493] [2022-12-13 16:47:54,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:54,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:54,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:54,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 613 out of 1461 [2022-12-13 16:47:54,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 614.3333333333334) internal successors, (1843), 3 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:54,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:54,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 613 of 1461 [2022-12-13 16:47:54,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:47:58,062 INFO L130 PetriNetUnfolder]: 22371/31739 cut-off events. [2022-12-13 16:47:58,062 INFO L131 PetriNetUnfolder]: For 255/255 co-relation queries the response was YES. [2022-12-13 16:47:58,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64824 conditions, 31739 events. 22371/31739 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 1268. Compared 191576 event pairs, 19125 based on Foata normal form. 0/16714 useless extension candidates. Maximal degree in co-relation 64815. Up to 31739 conditions per place. [2022-12-13 16:47:58,185 INFO L137 encePairwiseOnDemand]: 1459/1461 looper letters, 80 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2022-12-13 16:47:58,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 81 transitions, 465 flow [2022-12-13 16:47:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:47:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1901 transitions. [2022-12-13 16:47:58,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43372119552817706 [2022-12-13 16:47:58,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1901 transitions. [2022-12-13 16:47:58,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1901 transitions. [2022-12-13 16:47:58,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:47:58,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1901 transitions. [2022-12-13 16:47:58,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 633.6666666666666) internal successors, (1901), 3 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:58,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:58,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:58,196 INFO L175 Difference]: Start difference. First operand has 74 places, 82 transitions, 305 flow. Second operand 3 states and 1901 transitions. [2022-12-13 16:47:58,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 81 transitions, 465 flow [2022-12-13 16:47:58,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:47:58,200 INFO L231 Difference]: Finished difference. Result has 74 places, 81 transitions, 304 flow [2022-12-13 16:47:58,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=81} [2022-12-13 16:47:58,201 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 16:47:58,201 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 304 flow [2022-12-13 16:47:58,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 614.3333333333334) internal successors, (1843), 3 states have internal predecessors, (1843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:58,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:47:58,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 16:47:58,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:47:58,202 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:47:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1833417466, now seen corresponding path program 1 times [2022-12-13 16:47:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:58,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895586143] [2022-12-13 16:47:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:58,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:47:58,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:58,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895586143] [2022-12-13 16:47:58,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895586143] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:58,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:47:58,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:47:58,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242125938] [2022-12-13 16:47:58,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:58,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:58,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:58,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:47:58,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 16:47:58,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:47:58,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:47:58,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 16:47:58,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:48:05,976 INFO L130 PetriNetUnfolder]: 44726/63414 cut-off events. [2022-12-13 16:48:05,977 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 16:48:06,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129445 conditions, 63414 events. 44726/63414 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418701 event pairs, 38250 based on Foata normal form. 0/33394 useless extension candidates. Maximal degree in co-relation 129436. Up to 31740 conditions per place. [2022-12-13 16:48:06,245 INFO L137 encePairwiseOnDemand]: 1449/1461 looper letters, 120 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2022-12-13 16:48:06,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 126 transitions, 652 flow [2022-12-13 16:48:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:48:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:48:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1948 transitions. [2022-12-13 16:48:06,249 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2022-12-13 16:48:06,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1948 transitions. [2022-12-13 16:48:06,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1948 transitions. [2022-12-13 16:48:06,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:48:06,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1948 transitions. [2022-12-13 16:48:06,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:06,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:06,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:06,255 INFO L175 Difference]: Start difference. First operand has 74 places, 81 transitions, 304 flow. Second operand 3 states and 1948 transitions. [2022-12-13 16:48:06,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 126 transitions, 652 flow [2022-12-13 16:48:06,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 126 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:48:06,258 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 359 flow [2022-12-13 16:48:06,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2022-12-13 16:48:06,258 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2022-12-13 16:48:06,258 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 359 flow [2022-12-13 16:48:06,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 613.6666666666666) internal successors, (1841), 3 states have internal predecessors, (1841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:06,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:48:06,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:48:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:48:06,259 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:48:06,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1001360763, now seen corresponding path program 1 times [2022-12-13 16:48:06,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:06,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120640702] [2022-12-13 16:48:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:48:06,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:06,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120640702] [2022-12-13 16:48:06,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120640702] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:48:06,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527978069] [2022-12-13 16:48:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:06,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:06,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:06,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:48:06,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:48:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:06,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:48:06,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:48:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:48:06,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:48:06,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527978069] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:48:06,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:48:06,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 16:48:06,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497749513] [2022-12-13 16:48:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:48:06,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:48:06,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:48:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:48:06,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 609 out of 1461 [2022-12-13 16:48:06,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 359 flow. Second operand has 3 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:06,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:06,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 609 of 1461 [2022-12-13 16:48:06,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:48:13,595 INFO L130 PetriNetUnfolder]: 44725/63413 cut-off events. [2022-12-13 16:48:13,595 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2022-12-13 16:48:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129558 conditions, 63413 events. 44725/63413 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418644 event pairs, 38250 based on Foata normal form. 1/33424 useless extension candidates. Maximal degree in co-relation 129548. Up to 63413 conditions per place. [2022-12-13 16:48:13,872 INFO L137 encePairwiseOnDemand]: 1458/1461 looper letters, 83 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2022-12-13 16:48:13,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 525 flow [2022-12-13 16:48:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:48:13,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:48:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1890 transitions. [2022-12-13 16:48:13,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43121149897330596 [2022-12-13 16:48:13,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1890 transitions. [2022-12-13 16:48:13,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1890 transitions. [2022-12-13 16:48:13,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:48:13,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1890 transitions. [2022-12-13 16:48:13,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 630.0) internal successors, (1890), 3 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:13,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:13,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:13,882 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 359 flow. Second operand 3 states and 1890 transitions. [2022-12-13 16:48:13,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 525 flow [2022-12-13 16:48:13,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:48:13,884 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 347 flow [2022-12-13 16:48:13,884 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=347, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2022-12-13 16:48:13,885 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2022-12-13 16:48:13,885 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 347 flow [2022-12-13 16:48:13,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 611.0) internal successors, (1833), 3 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:13,885 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:48:13,885 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 16:48:13,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 16:48:14,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 16:48:14,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:48:14,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1079525431, now seen corresponding path program 2 times [2022-12-13 16:48:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:14,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438535588] [2022-12-13 16:48:14,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:14,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:48:14,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438535588] [2022-12-13 16:48:14,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438535588] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:48:14,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752868544] [2022-12-13 16:48:14,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:48:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:14,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:14,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:48:14,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:48:14,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:48:14,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:48:14,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:48:14,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:48:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:48:14,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:48:14,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752868544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:48:14,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:48:14,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 16:48:14,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134806328] [2022-12-13 16:48:14,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:48:14,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:48:14,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:48:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:48:14,267 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 16:48:14,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:14,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:14,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 16:48:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:48:21,448 INFO L130 PetriNetUnfolder]: 44725/63410 cut-off events. [2022-12-13 16:48:21,448 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2022-12-13 16:48:21,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129512 conditions, 63410 events. 44725/63410 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418715 event pairs, 38250 based on Foata normal form. 3/33403 useless extension candidates. Maximal degree in co-relation 129502. Up to 63410 conditions per place. [2022-12-13 16:48:21,704 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 81 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2022-12-13 16:48:21,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 481 flow [2022-12-13 16:48:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:48:21,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:48:21,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1906 transitions. [2022-12-13 16:48:21,707 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43486196668948207 [2022-12-13 16:48:21,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1906 transitions. [2022-12-13 16:48:21,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1906 transitions. [2022-12-13 16:48:21,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:48:21,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1906 transitions. [2022-12-13 16:48:21,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:21,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:21,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:21,714 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 347 flow. Second operand 3 states and 1906 transitions. [2022-12-13 16:48:21,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 481 flow [2022-12-13 16:48:21,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 435 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 16:48:21,715 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 273 flow [2022-12-13 16:48:21,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2022-12-13 16:48:21,716 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2022-12-13 16:48:21,716 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 273 flow [2022-12-13 16:48:21,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 616.0) internal successors, (1848), 3 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:21,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:48:21,716 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:48:21,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:48:21,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:48:21,917 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:48:21,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:21,918 INFO L85 PathProgramCache]: Analyzing trace with hash 972619645, now seen corresponding path program 1 times [2022-12-13 16:48:21,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:21,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889904589] [2022-12-13 16:48:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:48:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:21,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889904589] [2022-12-13 16:48:21,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889904589] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:48:21,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708835306] [2022-12-13 16:48:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:21,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:21,969 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:48:21,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:48:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:22,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:48:22,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:48:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:48:22,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:48:22,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708835306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:48:22,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:48:22,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-12-13 16:48:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216244230] [2022-12-13 16:48:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:48:22,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:48:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:48:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:48:22,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 16:48:22,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 604.75) internal successors, (2419), 4 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:22,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:22,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 16:48:22,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:48:28,859 INFO L130 PetriNetUnfolder]: 44724/63409 cut-off events. [2022-12-13 16:48:28,860 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-12-13 16:48:28,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129483 conditions, 63409 events. 44724/63409 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 2431. Compared 418668 event pairs, 38250 based on Foata normal form. 0/33399 useless extension candidates. Maximal degree in co-relation 129477. Up to 63404 conditions per place. [2022-12-13 16:48:29,121 INFO L137 encePairwiseOnDemand]: 1456/1461 looper letters, 74 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2022-12-13 16:48:29,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 81 transitions, 431 flow [2022-12-13 16:48:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:48:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:48:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2473 transitions. [2022-12-13 16:48:29,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4231690622861054 [2022-12-13 16:48:29,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2473 transitions. [2022-12-13 16:48:29,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2473 transitions. [2022-12-13 16:48:29,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:48:29,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2473 transitions. [2022-12-13 16:48:29,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 618.25) internal successors, (2473), 4 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:29,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:29,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:29,133 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 273 flow. Second operand 4 states and 2473 transitions. [2022-12-13 16:48:29,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 81 transitions, 431 flow [2022-12-13 16:48:29,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 81 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:48:29,135 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 282 flow [2022-12-13 16:48:29,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2022-12-13 16:48:29,136 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -9 predicate places. [2022-12-13 16:48:29,136 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 282 flow [2022-12-13 16:48:29,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 604.75) internal successors, (2419), 4 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:29,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:48:29,136 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:48:29,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:48:29,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:29,338 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:48:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1411823, now seen corresponding path program 1 times [2022-12-13 16:48:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:29,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828586079] [2022-12-13 16:48:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:48:29,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:29,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828586079] [2022-12-13 16:48:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828586079] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:48:29,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902307802] [2022-12-13 16:48:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:29,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:29,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:29,436 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:48:29,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:48:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:29,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:48:29,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:48:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:48:29,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:48:29,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902307802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:48:29,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:48:29,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-12-13 16:48:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378835432] [2022-12-13 16:48:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:48:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:48:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:48:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:48:29,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 16:48:29,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:29,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:29,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 16:48:29,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:48:34,864 INFO L130 PetriNetUnfolder]: 35781/50732 cut-off events. [2022-12-13 16:48:34,864 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-12-13 16:48:34,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103611 conditions, 50732 events. 35781/50732 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 1998. Compared 327255 event pairs, 30600 based on Foata normal form. 1/26725 useless extension candidates. Maximal degree in co-relation 103605. Up to 50727 conditions per place. [2022-12-13 16:48:35,068 INFO L137 encePairwiseOnDemand]: 1456/1461 looper letters, 74 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2022-12-13 16:48:35,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 444 flow [2022-12-13 16:48:35,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:48:35,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:48:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2473 transitions. [2022-12-13 16:48:35,071 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4231690622861054 [2022-12-13 16:48:35,071 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2473 transitions. [2022-12-13 16:48:35,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2473 transitions. [2022-12-13 16:48:35,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:48:35,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2473 transitions. [2022-12-13 16:48:35,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 618.25) internal successors, (2473), 4 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:35,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:35,079 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:35,079 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 282 flow. Second operand 4 states and 2473 transitions. [2022-12-13 16:48:35,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 444 flow [2022-12-13 16:48:35,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 81 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:48:35,081 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 298 flow [2022-12-13 16:48:35,081 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2022-12-13 16:48:35,081 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2022-12-13 16:48:35,081 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 298 flow [2022-12-13 16:48:35,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 605.0) internal successors, (2420), 4 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:35,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:48:35,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:48:35,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:48:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:35,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:48:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash -46741700, now seen corresponding path program 1 times [2022-12-13 16:48:35,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:35,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409680816] [2022-12-13 16:48:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:35,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:48:35,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:35,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409680816] [2022-12-13 16:48:35,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409680816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:48:35,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142788354] [2022-12-13 16:48:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:35,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:48:35,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:48:35,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:48:35,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:48:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:35,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:48:35,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:48:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:48:35,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:48:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:48:35,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142788354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:48:35,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:48:35,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:48:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887825955] [2022-12-13 16:48:35,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:48:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:48:35,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:48:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:48:35,562 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 16:48:35,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:35,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:35,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 16:48:35,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:48:49,957 INFO L130 PetriNetUnfolder]: 89469/126788 cut-off events. [2022-12-13 16:48:49,957 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-12-13 16:48:50,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258879 conditions, 126788 events. 89469/126788 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 4523. Compared 902174 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 258872. Up to 25381 conditions per place. [2022-12-13 16:48:50,545 INFO L137 encePairwiseOnDemand]: 1449/1461 looper letters, 232 selfloop transitions, 33 changer transitions 0/265 dead transitions. [2022-12-13 16:48:50,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 265 transitions, 1268 flow [2022-12-13 16:48:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:48:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:48:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4540 transitions. [2022-12-13 16:48:50,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44392294905641927 [2022-12-13 16:48:50,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4540 transitions. [2022-12-13 16:48:50,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4540 transitions. [2022-12-13 16:48:50,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:48:50,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4540 transitions. [2022-12-13 16:48:50,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 648.5714285714286) internal successors, (4540), 7 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:50,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1461.0) internal successors, (11688), 8 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:50,564 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1461.0) internal successors, (11688), 8 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:50,564 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 298 flow. Second operand 7 states and 4540 transitions. [2022-12-13 16:48:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 265 transitions, 1268 flow [2022-12-13 16:48:50,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 265 transitions, 1249 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 16:48:50,567 INFO L231 Difference]: Finished difference. Result has 81 places, 105 transitions, 498 flow [2022-12-13 16:48:50,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=81, PETRI_TRANSITIONS=105} [2022-12-13 16:48:50,568 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2022-12-13 16:48:50,568 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 105 transitions, 498 flow [2022-12-13 16:48:50,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 614.0) internal successors, (4298), 7 states have internal predecessors, (4298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:50,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:48:50,569 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:48:50,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:48:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 16:48:50,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:48:50,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:48:50,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1448986867, now seen corresponding path program 1 times [2022-12-13 16:48:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:48:50,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430377125] [2022-12-13 16:48:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:48:50,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:48:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:48:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:48:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:48:50,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430377125] [2022-12-13 16:48:50,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430377125] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:48:50,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:48:50,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:48:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355287903] [2022-12-13 16:48:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:48:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:48:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:48:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:48:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:48:50,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 612 out of 1461 [2022-12-13 16:48:50,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 105 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 615.3333333333334) internal successors, (1846), 3 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:48:50,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:48:50,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 612 of 1461 [2022-12-13 16:48:50,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:49:05,420 INFO L130 PetriNetUnfolder]: 89433/126740 cut-off events. [2022-12-13 16:49:05,420 INFO L131 PetriNetUnfolder]: For 993/993 co-relation queries the response was YES. [2022-12-13 16:49:05,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258919 conditions, 126740 events. 89433/126740 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 904215 event pairs, 76500 based on Foata normal form. 8/66812 useless extension candidates. Maximal degree in co-relation 258909. Up to 126716 conditions per place. [2022-12-13 16:49:06,045 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 16:49:06,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 603 flow [2022-12-13 16:49:06,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:49:06,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:49:06,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1894 transitions. [2022-12-13 16:49:06,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43212411590235 [2022-12-13 16:49:06,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1894 transitions. [2022-12-13 16:49:06,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1894 transitions. [2022-12-13 16:49:06,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:49:06,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1894 transitions. [2022-12-13 16:49:06,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 631.3333333333334) internal successors, (1894), 3 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:06,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:06,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:06,055 INFO L175 Difference]: Start difference. First operand has 81 places, 105 transitions, 498 flow. Second operand 3 states and 1894 transitions. [2022-12-13 16:49:06,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 603 flow [2022-12-13 16:49:06,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 93 transitions, 573 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 16:49:06,057 INFO L231 Difference]: Finished difference. Result has 78 places, 93 transitions, 389 flow [2022-12-13 16:49:06,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=78, PETRI_TRANSITIONS=93} [2022-12-13 16:49:06,058 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2022-12-13 16:49:06,058 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 93 transitions, 389 flow [2022-12-13 16:49:06,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 615.3333333333334) internal successors, (1846), 3 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:06,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:49:06,059 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:49:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:49:06,059 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:49:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash -906786641, now seen corresponding path program 2 times [2022-12-13 16:49:06,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:06,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906762819] [2022-12-13 16:49:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 16:49:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:06,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906762819] [2022-12-13 16:49:06,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906762819] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:49:06,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768326746] [2022-12-13 16:49:06,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:49:06,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:49:06,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:49:06,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:49:06,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:49:06,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:49:06,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:49:06,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:49:06,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:49:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 16:49:06,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:49:06,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768326746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:06,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:49:06,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2022-12-13 16:49:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104720628] [2022-12-13 16:49:06,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:49:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:49:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:49:06,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1461 [2022-12-13 16:49:06,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 93 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 618.0) internal successors, (1854), 3 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:06,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:49:06,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1461 [2022-12-13 16:49:06,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:49:21,760 INFO L130 PetriNetUnfolder]: 89433/126728 cut-off events. [2022-12-13 16:49:21,760 INFO L131 PetriNetUnfolder]: For 1020/1020 co-relation queries the response was YES. [2022-12-13 16:49:22,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258780 conditions, 126728 events. 89433/126728 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 904129 event pairs, 76500 based on Foata normal form. 12/66812 useless extension candidates. Maximal degree in co-relation 258769. Up to 126704 conditions per place. [2022-12-13 16:49:22,363 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2022-12-13 16:49:22,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 90 transitions, 539 flow [2022-12-13 16:49:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:49:22,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:49:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1900 transitions. [2022-12-13 16:49:22,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43349304129591604 [2022-12-13 16:49:22,366 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1900 transitions. [2022-12-13 16:49:22,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1900 transitions. [2022-12-13 16:49:22,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:49:22,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1900 transitions. [2022-12-13 16:49:22,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 633.3333333333334) internal successors, (1900), 3 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:22,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:22,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1461.0) internal successors, (5844), 4 states have internal predecessors, (5844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:22,372 INFO L175 Difference]: Start difference. First operand has 78 places, 93 transitions, 389 flow. Second operand 3 states and 1900 transitions. [2022-12-13 16:49:22,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 90 transitions, 539 flow [2022-12-13 16:49:22,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 16:49:22,374 INFO L231 Difference]: Finished difference. Result has 72 places, 90 transitions, 318 flow [2022-12-13 16:49:22,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=72, PETRI_TRANSITIONS=90} [2022-12-13 16:49:22,375 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -10 predicate places. [2022-12-13 16:49:22,375 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 90 transitions, 318 flow [2022-12-13 16:49:22,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 618.0) internal successors, (1854), 3 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:22,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:49:22,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:49:22,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:49:22,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 16:49:22,577 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:49:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash 737115981, now seen corresponding path program 1 times [2022-12-13 16:49:22,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:22,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914217136] [2022-12-13 16:49:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:22,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:49:22,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914217136] [2022-12-13 16:49:22,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914217136] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:22,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:22,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:49:22,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761073323] [2022-12-13 16:49:22,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:22,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:49:22,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:49:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:49:22,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 16:49:22,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 90 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 607.0) internal successors, (2428), 4 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:22,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:49:22,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 16:49:22,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:49:36,310 INFO L130 PetriNetUnfolder]: 89429/126724 cut-off events. [2022-12-13 16:49:36,310 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-12-13 16:49:36,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258684 conditions, 126724 events. 89429/126724 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 904055 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 258677. Up to 126720 conditions per place. [2022-12-13 16:49:36,904 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 86 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2022-12-13 16:49:36,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 492 flow [2022-12-13 16:49:36,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:49:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:49:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2466 transitions. [2022-12-13 16:49:36,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219712525667351 [2022-12-13 16:49:36,908 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2466 transitions. [2022-12-13 16:49:36,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2466 transitions. [2022-12-13 16:49:36,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:49:36,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2466 transitions. [2022-12-13 16:49:36,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 616.5) internal successors, (2466), 4 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:36,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:36,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:36,915 INFO L175 Difference]: Start difference. First operand has 72 places, 90 transitions, 318 flow. Second operand 4 states and 2466 transitions. [2022-12-13 16:49:36,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 492 flow [2022-12-13 16:49:36,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:49:36,917 INFO L231 Difference]: Finished difference. Result has 74 places, 89 transitions, 319 flow [2022-12-13 16:49:36,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=74, PETRI_TRANSITIONS=89} [2022-12-13 16:49:36,917 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -8 predicate places. [2022-12-13 16:49:36,917 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 89 transitions, 319 flow [2022-12-13 16:49:36,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 607.0) internal successors, (2428), 4 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:36,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:49:36,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:49:36,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 16:49:36,918 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:49:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:36,919 INFO L85 PathProgramCache]: Analyzing trace with hash 36776986, now seen corresponding path program 1 times [2022-12-13 16:49:36,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:36,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948342883] [2022-12-13 16:49:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:36,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:49:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:36,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948342883] [2022-12-13 16:49:36,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948342883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:36,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:49:36,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:49:36,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182674648] [2022-12-13 16:49:36,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:36,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:49:36,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:36,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:49:36,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:49:37,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 16:49:37,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 89 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 607.25) internal successors, (2429), 4 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:37,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:49:37,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 16:49:37,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:49:50,450 INFO L130 PetriNetUnfolder]: 89425/126720 cut-off events. [2022-12-13 16:49:50,450 INFO L131 PetriNetUnfolder]: For 973/973 co-relation queries the response was YES. [2022-12-13 16:49:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258681 conditions, 126720 events. 89425/126720 cut-off events. For 973/973 co-relation queries the response was YES. Maximal size of possible extension queue 4646. Compared 903961 event pairs, 76500 based on Foata normal form. 0/66768 useless extension candidates. Maximal degree in co-relation 258674. Up to 126704 conditions per place. [2022-12-13 16:49:51,033 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2022-12-13 16:49:51,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 491 flow [2022-12-13 16:49:51,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:49:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:49:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2466 transitions. [2022-12-13 16:49:51,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219712525667351 [2022-12-13 16:49:51,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2466 transitions. [2022-12-13 16:49:51,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2466 transitions. [2022-12-13 16:49:51,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:49:51,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2466 transitions. [2022-12-13 16:49:51,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 616.5) internal successors, (2466), 4 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:51,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:51,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:51,045 INFO L175 Difference]: Start difference. First operand has 74 places, 89 transitions, 319 flow. Second operand 4 states and 2466 transitions. [2022-12-13 16:49:51,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 491 flow [2022-12-13 16:49:51,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 88 transitions, 485 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:49:51,047 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 321 flow [2022-12-13 16:49:51,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2022-12-13 16:49:51,047 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2022-12-13 16:49:51,047 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 321 flow [2022-12-13 16:49:51,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 607.25) internal successors, (2429), 4 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:51,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:49:51,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:49:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:49:51,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:49:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:49:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1303977875, now seen corresponding path program 1 times [2022-12-13 16:49:51,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:49:51,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709492522] [2022-12-13 16:49:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:51,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:49:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:49:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:49:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709492522] [2022-12-13 16:49:51,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709492522] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:49:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449199270] [2022-12-13 16:49:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:49:51,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:49:51,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:49:51,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:49:51,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:49:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:49:51,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:49:51,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:49:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:49:51,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:49:51,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449199270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:49:51,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:49:51,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 16:49:51,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324602706] [2022-12-13 16:49:51,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:49:51,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:49:51,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:49:51,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:49:51,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:49:51,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 1461 [2022-12-13 16:49:51,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 607.5) internal successors, (2430), 4 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:49:51,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:49:51,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 1461 [2022-12-13 16:49:51,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:50:02,435 INFO L130 PetriNetUnfolder]: 71549/101400 cut-off events. [2022-12-13 16:50:02,435 INFO L131 PetriNetUnfolder]: For 778/778 co-relation queries the response was YES. [2022-12-13 16:50:02,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207037 conditions, 101400 events. 71549/101400 cut-off events. For 778/778 co-relation queries the response was YES. Maximal size of possible extension queue 3836. Compared 708192 event pairs, 61200 based on Foata normal form. 4/53452 useless extension candidates. Maximal degree in co-relation 207030. Up to 101384 conditions per place. [2022-12-13 16:50:02,962 INFO L137 encePairwiseOnDemand]: 1457/1461 looper letters, 82 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2022-12-13 16:50:02,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 497 flow [2022-12-13 16:50:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:50:02,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:50:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2466 transitions. [2022-12-13 16:50:02,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4219712525667351 [2022-12-13 16:50:02,967 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2466 transitions. [2022-12-13 16:50:02,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2466 transitions. [2022-12-13 16:50:02,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:50:02,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2466 transitions. [2022-12-13 16:50:02,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 616.5) internal successors, (2466), 4 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:50:02,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:50:02,974 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1461.0) internal successors, (7305), 5 states have internal predecessors, (7305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:50:02,974 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 321 flow. Second operand 4 states and 2466 transitions. [2022-12-13 16:50:02,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 497 flow [2022-12-13 16:50:02,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 488 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:50:02,976 INFO L231 Difference]: Finished difference. Result has 77 places, 88 transitions, 331 flow [2022-12-13 16:50:02,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1461, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=77, PETRI_TRANSITIONS=88} [2022-12-13 16:50:02,976 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -5 predicate places. [2022-12-13 16:50:02,976 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 88 transitions, 331 flow [2022-12-13 16:50:02,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 607.5) internal successors, (2430), 4 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:50:02,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:50:02,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:50:02,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:50:03,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 16:50:03,179 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-12-13 16:50:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:50:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1041130099, now seen corresponding path program 1 times [2022-12-13 16:50:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:50:03,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442499578] [2022-12-13 16:50:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:50:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:04,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 16:50:04,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:50:04,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442499578] [2022-12-13 16:50:04,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442499578] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:50:04,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107283649] [2022-12-13 16:50:04,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:50:04,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:50:04,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:50:04,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:50:04,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_211a222c-aeff-487f-9ed4-03d6fe70f99c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:50:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:50:04,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-13 16:50:04,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:50:04,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 16:50:04,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 16:50:04,777 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:50:04,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 16:50:04,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:04,886 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 16:50:04,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 16:50:04,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,065 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 16:50:05,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 16:50:05,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,189 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 16:50:05,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:50:05,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:50:05,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 16:50:05,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 16:50:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:50:05,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:50:05,459 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_807 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_807) c_~get_5~0.base) (+ (* c_~id_3~0 4) c_~get_5~0.offset))))) is different from false [2022-12-13 16:50:08,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:50:08,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 44 [2022-12-13 16:50:08,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:50:08,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43075 treesize of output 42823 [2022-12-13 16:50:08,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42806 treesize of output 39734 [2022-12-13 16:50:08,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39734 treesize of output 33590 [2022-12-13 16:50:08,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33590 treesize of output 33398 [2022-12-13 16:50:08,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33398 treesize of output 31862 [2022-12-13 16:50:09,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31862 treesize of output 31478 [2022-12-13 16:50:09,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31478 treesize of output 30710 [2022-12-13 16:59:00,886 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:59:00,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 800 treesize of output 1295