./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro --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 b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --- 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-8393723 [2022-11-18 20:05:17,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:05:17,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:05:17,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:05:17,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:05:17,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:05:17,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:05:17,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:05:17,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:05:17,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:05:17,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:05:17,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:05:17,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:05:17,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:05:17,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:05:17,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:05:17,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:05:17,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:05:17,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:05:17,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:05:17,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:05:17,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:05:17,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:05:17,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:05:17,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:05:17,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:05:17,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:05:17,825 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:05:17,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:05:17,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:05:17,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:05:17,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:05:17,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:05:17,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:05:17,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:05:17,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:05:17,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:05:17,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:05:17,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:05:17,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:05:17,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:05:17,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:05:17,894 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:05:17,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:05:17,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:05:17,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:05:17,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:05:17,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:05:17,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:05:17,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:05:17,899 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:05:17,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:05:17,901 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:05:17,902 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:05:17,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:05:17,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:05:17,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:05:17,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:05:17,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:05:17,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:05:17,904 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:05:17,904 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:05:17,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:05:17,905 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:05:17,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:05:17,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:05:17,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:05:17,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:05:17,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:17,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:05:17,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:05:17,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:05:17,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:05:17,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:05:17,909 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:05:17,909 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:05:17,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:05:17,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 [2022-11-18 20:05:18,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:05:18,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:05:18,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:05:18,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:05:18,344 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:05:18,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-11-18 20:05:18,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/data/35e417f79/b54f04e59a354a36bed4a4d97bed630a/FLAG276c42d19 [2022-11-18 20:05:19,059 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:05:19,064 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/sv-benchmarks/c/weaver/chl-node-trans.wvr.c [2022-11-18 20:05:19,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/data/35e417f79/b54f04e59a354a36bed4a4d97bed630a/FLAG276c42d19 [2022-11-18 20:05:19,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/data/35e417f79/b54f04e59a354a36bed4a4d97bed630a [2022-11-18 20:05:19,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:05:19,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:05:19,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:19,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:05:19,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:05:19,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:19,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1502d9cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19, skipping insertion in model container [2022-11-18 20:05:19,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:19,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:05:19,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:05:19,784 WARN L234 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_b445812f-4e3f-4aa9-99e2-fe09081824ef/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-11-18 20:05:19,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:19,811 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:05:19,869 WARN L234 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_b445812f-4e3f-4aa9-99e2-fe09081824ef/sv-benchmarks/c/weaver/chl-node-trans.wvr.c[3945,3958] [2022-11-18 20:05:19,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:05:19,925 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:05:19,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19 WrapperNode [2022-11-18 20:05:19,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:05:19,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:19,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:05:19,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:05:19,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:19,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,013 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 479 [2022-11-18 20:05:20,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:05:20,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:05:20,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:05:20,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:05:20,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,063 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:05:20,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:05:20,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:05:20,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:05:20,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (1/1) ... [2022-11-18 20:05:20,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:05:20,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:20,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:05:20,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:05:20,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:05:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:05:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:05:20,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:05:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:05:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:05:20,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:05:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:05:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:05:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:05:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:05:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:05:20,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:05:20,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:05:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:05:20,181 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:05:20,392 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:05:20,395 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:05:21,321 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:05:21,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:05:21,337 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:05:21,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:21 BoogieIcfgContainer [2022-11-18 20:05:21,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:05:21,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:05:21,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:05:21,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:05:21,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:05:19" (1/3) ... [2022-11-18 20:05:21,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abed906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:21, skipping insertion in model container [2022-11-18 20:05:21,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:05:19" (2/3) ... [2022-11-18 20:05:21,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2abed906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:05:21, skipping insertion in model container [2022-11-18 20:05:21,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:05:21" (3/3) ... [2022-11-18 20:05:21,351 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2022-11-18 20:05:21,361 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:05:21,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:05:21,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-18 20:05:21,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:05:21,496 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:05:21,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 657 transitions, 1338 flow [2022-11-18 20:05:21,886 INFO L130 PetriNetUnfolder]: 47/654 cut-off events. [2022-11-18 20:05:21,887 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:05:21,904 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 1082 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. [2022-11-18 20:05:21,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 657 transitions, 1338 flow [2022-11-18 20:05:21,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 633 transitions, 1281 flow [2022-11-18 20:05:21,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:05:21,963 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;@7a7fd319, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:05:21,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2022-11-18 20:05:21,988 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2022-11-18 20:05:21,988 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:05:21,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:21,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:21,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:21,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1133195272, now seen corresponding path program 1 times [2022-11-18 20:05:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721471931] [2022-11-18 20:05:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:22,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:22,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:22,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721471931] [2022-11-18 20:05:22,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721471931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:22,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:22,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:22,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550370100] [2022-11-18 20:05:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:22,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:22,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:22,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-18 20:05:22,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 633 transitions, 1281 flow. Second operand has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:22,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:22,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-18 20:05:22,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:23,608 INFO L130 PetriNetUnfolder]: 67/1142 cut-off events. [2022-11-18 20:05:23,608 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-11-18 20:05:23,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 1142 events. 67/1142 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4705 event pairs, 21 based on Foata normal form. 49/1019 useless extension candidates. Maximal degree in co-relation 707. Up to 123 conditions per place. [2022-11-18 20:05:23,633 INFO L137 encePairwiseOnDemand]: 619/657 looper letters, 80 selfloop transitions, 5 changer transitions 16/603 dead transitions. [2022-11-18 20:05:23,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 603 transitions, 1423 flow [2022-11-18 20:05:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:05:23,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:05:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3239 transitions. [2022-11-18 20:05:23,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.821664129883308 [2022-11-18 20:05:23,666 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3239 transitions. [2022-11-18 20:05:23,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3239 transitions. [2022-11-18 20:05:23,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:23,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3239 transitions. [2022-11-18 20:05:23,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 539.8333333333334) internal successors, (3239), 6 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,717 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 657.0) internal successors, (4599), 7 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,721 INFO L175 Difference]: Start difference. First operand has 597 places, 633 transitions, 1281 flow. Second operand 6 states and 3239 transitions. [2022-11-18 20:05:23,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 603 transitions, 1423 flow [2022-11-18 20:05:23,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 603 transitions, 1414 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:23,754 INFO L231 Difference]: Finished difference. Result has 595 places, 587 transitions, 1190 flow [2022-11-18 20:05:23,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=595, PETRI_TRANSITIONS=587} [2022-11-18 20:05:23,765 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-18 20:05:23,766 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 587 transitions, 1190 flow [2022-11-18 20:05:23,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 521.8) internal successors, (2609), 5 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:23,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:23,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:23,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:05:23,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -769314044, now seen corresponding path program 1 times [2022-11-18 20:05:23,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:23,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788500799] [2022-11-18 20:05:23,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:23,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:24,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:24,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788500799] [2022-11-18 20:05:24,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788500799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:24,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:24,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080644343] [2022-11-18 20:05:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:24,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:24,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:24,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:24,067 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-18 20:05:24,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 587 transitions, 1190 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:24,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-18 20:05:24,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:24,567 INFO L130 PetriNetUnfolder]: 67/1124 cut-off events. [2022-11-18 20:05:24,568 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-18 20:05:24,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 1124 events. 67/1124 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4679 event pairs, 21 based on Foata normal form. 0/970 useless extension candidates. Maximal degree in co-relation 1104. Up to 64 conditions per place. [2022-11-18 20:05:24,587 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/585 dead transitions. [2022-11-18 20:05:24,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 585 transitions, 1234 flow [2022-11-18 20:05:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:05:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:05:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-18 20:05:24,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-18 20:05:24,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-18 20:05:24,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-18 20:05:24,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:24,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-18 20:05:24,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,611 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,612 INFO L175 Difference]: Start difference. First operand has 595 places, 587 transitions, 1190 flow. Second operand 4 states and 2418 transitions. [2022-11-18 20:05:24,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 585 transitions, 1234 flow [2022-11-18 20:05:24,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 585 transitions, 1224 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:05:24,625 INFO L231 Difference]: Finished difference. Result has 575 places, 585 transitions, 1182 flow [2022-11-18 20:05:24,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1182, PETRI_PLACES=575, PETRI_TRANSITIONS=585} [2022-11-18 20:05:24,628 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -22 predicate places. [2022-11-18 20:05:24,628 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 585 transitions, 1182 flow [2022-11-18 20:05:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:24,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:24,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:05:24,631 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 793945238, now seen corresponding path program 1 times [2022-11-18 20:05:24,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:24,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019312350] [2022-11-18 20:05:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:24,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:24,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:24,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019312350] [2022-11-18 20:05:24,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019312350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:24,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:24,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:24,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209174030] [2022-11-18 20:05:24,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:24,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:24,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:05:24,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 585 transitions, 1182 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:24,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:24,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:05:24,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:25,348 INFO L130 PetriNetUnfolder]: 35/1014 cut-off events. [2022-11-18 20:05:25,349 INFO L131 PetriNetUnfolder]: For 4/8 co-relation queries the response was YES. [2022-11-18 20:05:25,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 1014 events. 35/1014 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3379 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1058. Up to 44 conditions per place. [2022-11-18 20:05:25,368 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/616 dead transitions. [2022-11-18 20:05:25,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 616 transitions, 1394 flow [2022-11-18 20:05:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-18 20:05:25,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-18 20:05:25,378 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-18 20:05:25,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-18 20:05:25,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:25,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-18 20:05:25,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,402 INFO L175 Difference]: Start difference. First operand has 575 places, 585 transitions, 1182 flow. Second operand 5 states and 3003 transitions. [2022-11-18 20:05:25,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 616 transitions, 1394 flow [2022-11-18 20:05:25,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 616 transitions, 1388 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:05:25,424 INFO L231 Difference]: Finished difference. Result has 579 places, 596 transitions, 1280 flow [2022-11-18 20:05:25,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=579, PETRI_TRANSITIONS=596} [2022-11-18 20:05:25,429 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -18 predicate places. [2022-11-18 20:05:25,429 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 596 transitions, 1280 flow [2022-11-18 20:05:25,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:25,431 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:25,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:05:25,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1600508096, now seen corresponding path program 1 times [2022-11-18 20:05:25,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:25,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102743236] [2022-11-18 20:05:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:25,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:25,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102743236] [2022-11-18 20:05:25,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102743236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:25,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:25,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:05:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041087273] [2022-11-18 20:05:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:25,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:05:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:05:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:05:25,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-18 20:05:25,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 596 transitions, 1280 flow. Second operand has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:25,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:25,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-18 20:05:25,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:26,895 INFO L130 PetriNetUnfolder]: 132/2078 cut-off events. [2022-11-18 20:05:26,895 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-11-18 20:05:26,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 2078 events. 132/2078 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 12400 event pairs, 42 based on Foata normal form. 0/1785 useless extension candidates. Maximal degree in co-relation 1144. Up to 223 conditions per place. [2022-11-18 20:05:26,937 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 110 selfloop transitions, 11 changer transitions 0/597 dead transitions. [2022-11-18 20:05:26,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 597 transitions, 1521 flow [2022-11-18 20:05:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:05:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:05:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-18 20:05:26,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-18 20:05:26,955 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-18 20:05:26,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-18 20:05:26,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:26,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-18 20:05:26,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:26,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,002 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,003 INFO L175 Difference]: Start difference. First operand has 579 places, 596 transitions, 1280 flow. Second operand 9 states and 4518 transitions. [2022-11-18 20:05:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 597 transitions, 1521 flow [2022-11-18 20:05:27,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 597 transitions, 1512 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 20:05:27,026 INFO L231 Difference]: Finished difference. Result has 587 places, 595 transitions, 1292 flow [2022-11-18 20:05:27,028 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1292, PETRI_PLACES=587, PETRI_TRANSITIONS=595} [2022-11-18 20:05:27,029 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -10 predicate places. [2022-11-18 20:05:27,030 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 595 transitions, 1292 flow [2022-11-18 20:05:27,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 493.25) internal successors, (3946), 8 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:27,042 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:27,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:05:27,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:27,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:27,043 INFO L85 PathProgramCache]: Analyzing trace with hash -861806634, now seen corresponding path program 1 times [2022-11-18 20:05:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020885831] [2022-11-18 20:05:27,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:27,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:27,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020885831] [2022-11-18 20:05:27,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020885831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:27,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596401195] [2022-11-18 20:05:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:27,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:27,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:27,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:27,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:05:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:27,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:05:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:27,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:27,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596401195] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:27,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:27,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:05:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764209018] [2022-11-18 20:05:27,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:27,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:05:27,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:05:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:05:27,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:05:27,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 595 transitions, 1292 flow. Second operand has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:27,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:27,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:05:27,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:29,018 INFO L130 PetriNetUnfolder]: 85/2293 cut-off events. [2022-11-18 20:05:29,018 INFO L131 PetriNetUnfolder]: For 53/63 co-relation queries the response was YES. [2022-11-18 20:05:29,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 2293 events. 85/2293 cut-off events. For 53/63 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12884 event pairs, 0 based on Foata normal form. 9/2029 useless extension candidates. Maximal degree in co-relation 2277. Up to 34 conditions per place. [2022-11-18 20:05:29,068 INFO L137 encePairwiseOnDemand]: 634/657 looper letters, 108 selfloop transitions, 61 changer transitions 0/713 dead transitions. [2022-11-18 20:05:29,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 713 transitions, 1974 flow [2022-11-18 20:05:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:05:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:05:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10708 transitions. [2022-11-18 20:05:29,094 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9054625401657365 [2022-11-18 20:05:29,094 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10708 transitions. [2022-11-18 20:05:29,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10708 transitions. [2022-11-18 20:05:29,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:29,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10708 transitions. [2022-11-18 20:05:29,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 594.8888888888889) internal successors, (10708), 18 states have internal predecessors, (10708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,159 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 657.0) internal successors, (12483), 19 states have internal predecessors, (12483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,159 INFO L175 Difference]: Start difference. First operand has 587 places, 595 transitions, 1292 flow. Second operand 18 states and 10708 transitions. [2022-11-18 20:05:29,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 713 transitions, 1974 flow [2022-11-18 20:05:29,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 713 transitions, 1948 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:05:29,182 INFO L231 Difference]: Finished difference. Result has 601 places, 637 transitions, 1633 flow [2022-11-18 20:05:29,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1633, PETRI_PLACES=601, PETRI_TRANSITIONS=637} [2022-11-18 20:05:29,186 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 4 predicate places. [2022-11-18 20:05:29,187 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 637 transitions, 1633 flow [2022-11-18 20:05:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 587.6666666666666) internal successors, (7052), 12 states have internal predecessors, (7052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:29,190 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:29,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:29,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:29,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash -946200399, now seen corresponding path program 1 times [2022-11-18 20:05:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:29,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821812236] [2022-11-18 20:05:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:29,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:29,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821812236] [2022-11-18 20:05:29,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821812236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:29,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501358564] [2022-11-18 20:05:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:29,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:29,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:29,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:29,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:05:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:29,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:05:29,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:29,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:05:29,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501358564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:29,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:05:29,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:05:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368160000] [2022-11-18 20:05:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:05:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:05:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:05:29,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:05:29,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 637 transitions, 1633 flow. Second operand has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:29,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:29,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:05:29,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:30,868 INFO L130 PetriNetUnfolder]: 85/2281 cut-off events. [2022-11-18 20:05:30,868 INFO L131 PetriNetUnfolder]: For 194/204 co-relation queries the response was YES. [2022-11-18 20:05:30,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 2281 events. 85/2281 cut-off events. For 194/204 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 12817 event pairs, 0 based on Foata normal form. 12/2020 useless extension candidates. Maximal degree in co-relation 2313. Up to 68 conditions per place. [2022-11-18 20:05:30,911 INFO L137 encePairwiseOnDemand]: 640/657 looper letters, 58 selfloop transitions, 42 changer transitions 0/644 dead transitions. [2022-11-18 20:05:30,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 644 transitions, 1802 flow [2022-11-18 20:05:30,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:05:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:05:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4165 transitions. [2022-11-18 20:05:30,923 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9056316590563166 [2022-11-18 20:05:30,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4165 transitions. [2022-11-18 20:05:30,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4165 transitions. [2022-11-18 20:05:30,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:30,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4165 transitions. [2022-11-18 20:05:30,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 657.0) internal successors, (5256), 8 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,952 INFO L175 Difference]: Start difference. First operand has 601 places, 637 transitions, 1633 flow. Second operand 7 states and 4165 transitions. [2022-11-18 20:05:30,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 644 transitions, 1802 flow [2022-11-18 20:05:30,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 644 transitions, 1696 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:30,974 INFO L231 Difference]: Finished difference. Result has 595 places, 625 transitions, 1530 flow [2022-11-18 20:05:30,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1530, PETRI_PLACES=595, PETRI_TRANSITIONS=625} [2022-11-18 20:05:30,979 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -2 predicate places. [2022-11-18 20:05:30,979 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 625 transitions, 1530 flow [2022-11-18 20:05:30,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 587.3333333333334) internal successors, (3524), 6 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:30,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:30,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:31,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:31,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:05:31,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1389208576, now seen corresponding path program 1 times [2022-11-18 20:05:31,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:31,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662780310] [2022-11-18 20:05:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:31,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:31,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:31,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662780310] [2022-11-18 20:05:31,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662780310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:31,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:31,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124237290] [2022-11-18 20:05:31,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:31,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:31,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-18 20:05:31,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 625 transitions, 1530 flow. Second operand has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:31,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:31,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-18 20:05:31,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:33,416 INFO L130 PetriNetUnfolder]: 480/6137 cut-off events. [2022-11-18 20:05:33,417 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2022-11-18 20:05:33,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7076 conditions, 6137 events. 480/6137 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 57411 event pairs, 195 based on Foata normal form. 0/5218 useless extension candidates. Maximal degree in co-relation 6775. Up to 586 conditions per place. [2022-11-18 20:05:33,510 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/623 dead transitions. [2022-11-18 20:05:33,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 623 transitions, 1696 flow [2022-11-18 20:05:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-18 20:05:33,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-18 20:05:33,522 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-18 20:05:33,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-18 20:05:33,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:33,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-18 20:05:33,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:33,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:33,541 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:33,542 INFO L175 Difference]: Start difference. First operand has 595 places, 625 transitions, 1530 flow. Second operand 5 states and 2677 transitions. [2022-11-18 20:05:33,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 623 transitions, 1696 flow [2022-11-18 20:05:33,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 623 transitions, 1644 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:05:33,555 INFO L231 Difference]: Finished difference. Result has 592 places, 623 transitions, 1484 flow [2022-11-18 20:05:33,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1474, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1484, PETRI_PLACES=592, PETRI_TRANSITIONS=623} [2022-11-18 20:05:33,557 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -5 predicate places. [2022-11-18 20:05:33,557 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 623 transitions, 1484 flow [2022-11-18 20:05:33,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 523.4) internal successors, (2617), 5 states have internal predecessors, (2617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:33,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:33,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:33,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:05:33,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash -115791918, now seen corresponding path program 1 times [2022-11-18 20:05:33,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:33,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107749248] [2022-11-18 20:05:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:33,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107749248] [2022-11-18 20:05:33,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107749248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:33,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:33,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654149782] [2022-11-18 20:05:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:33,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:33,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:33,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-18 20:05:33,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 623 transitions, 1484 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:33,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:33,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-18 20:05:33,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:35,802 INFO L130 PetriNetUnfolder]: 480/6128 cut-off events. [2022-11-18 20:05:35,802 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-11-18 20:05:35,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6878 conditions, 6128 events. 480/6128 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 57436 event pairs, 195 based on Foata normal form. 0/5218 useless extension candidates. Maximal degree in co-relation 6765. Up to 432 conditions per place. [2022-11-18 20:05:35,912 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/621 dead transitions. [2022-11-18 20:05:35,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 621 transitions, 1528 flow [2022-11-18 20:05:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:05:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:05:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-18 20:05:35,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-18 20:05:35,918 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-18 20:05:35,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-18 20:05:35,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:35,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-18 20:05:35,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:35,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:35,929 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:35,929 INFO L175 Difference]: Start difference. First operand has 592 places, 623 transitions, 1484 flow. Second operand 4 states and 2418 transitions. [2022-11-18 20:05:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 621 transitions, 1528 flow [2022-11-18 20:05:35,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 621 transitions, 1518 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:05:35,942 INFO L231 Difference]: Finished difference. Result has 589 places, 621 transitions, 1476 flow [2022-11-18 20:05:35,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1470, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1476, PETRI_PLACES=589, PETRI_TRANSITIONS=621} [2022-11-18 20:05:35,945 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, -8 predicate places. [2022-11-18 20:05:35,945 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 621 transitions, 1476 flow [2022-11-18 20:05:35,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:35,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:35,947 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:35,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:05:35,948 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash -661261162, now seen corresponding path program 2 times [2022-11-18 20:05:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:35,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173989319] [2022-11-18 20:05:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:36,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:36,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173989319] [2022-11-18 20:05:36,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173989319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:36,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133230612] [2022-11-18 20:05:36,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:05:36,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:36,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:36,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:36,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:05:36,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:05:36,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:05:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:05:36,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:05:36,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:05:36,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133230612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:36,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:36,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-11-18 20:05:36,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992308939] [2022-11-18 20:05:36,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:36,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:05:36,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:05:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:05:36,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 551 out of 657 [2022-11-18 20:05:36,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 621 transitions, 1476 flow. Second operand has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:36,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:36,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 551 of 657 [2022-11-18 20:05:36,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:40,435 INFO L130 PetriNetUnfolder]: 462/6878 cut-off events. [2022-11-18 20:05:40,435 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-11-18 20:05:40,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 6878 events. 462/6878 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 62173 event pairs, 147 based on Foata normal form. 6/5883 useless extension candidates. Maximal degree in co-relation 7674. Up to 93 conditions per place. [2022-11-18 20:05:40,617 INFO L137 encePairwiseOnDemand]: 629/657 looper letters, 213 selfloop transitions, 95 changer transitions 0/818 dead transitions. [2022-11-18 20:05:40,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 818 transitions, 2618 flow [2022-11-18 20:05:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:05:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-18 20:05:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 26762 transitions. [2022-11-18 20:05:40,665 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486174530695079 [2022-11-18 20:05:40,665 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 26762 transitions. [2022-11-18 20:05:40,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 26762 transitions. [2022-11-18 20:05:40,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:40,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 26762 transitions. [2022-11-18 20:05:40,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 557.5416666666666) internal successors, (26762), 48 states have internal predecessors, (26762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,758 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 657.0) internal successors, (32193), 49 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,758 INFO L175 Difference]: Start difference. First operand has 589 places, 621 transitions, 1476 flow. Second operand 48 states and 26762 transitions. [2022-11-18 20:05:40,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 818 transitions, 2618 flow [2022-11-18 20:05:40,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 818 transitions, 2612 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:05:40,773 INFO L231 Difference]: Finished difference. Result has 636 places, 660 transitions, 1860 flow [2022-11-18 20:05:40,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1860, PETRI_PLACES=636, PETRI_TRANSITIONS=660} [2022-11-18 20:05:40,774 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 39 predicate places. [2022-11-18 20:05:40,775 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 660 transitions, 1860 flow [2022-11-18 20:05:40,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 554.8235294117648) internal successors, (9432), 17 states have internal predecessors, (9432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:40,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:40,778 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:40,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:05:40,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:40,984 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:40,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:40,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1424121864, now seen corresponding path program 1 times [2022-11-18 20:05:40,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:40,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321650382] [2022-11-18 20:05:40,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:40,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321650382] [2022-11-18 20:05:41,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321650382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:41,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:41,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:05:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907592576] [2022-11-18 20:05:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:41,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:05:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:05:41,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:05:41,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 489 out of 657 [2022-11-18 20:05:41,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 660 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:41,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:41,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 489 of 657 [2022-11-18 20:05:41,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:43,817 INFO L130 PetriNetUnfolder]: 671/8502 cut-off events. [2022-11-18 20:05:43,817 INFO L131 PetriNetUnfolder]: For 482/482 co-relation queries the response was YES. [2022-11-18 20:05:43,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9989 conditions, 8502 events. 671/8502 cut-off events. For 482/482 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 84588 event pairs, 273 based on Foata normal form. 1/7245 useless extension candidates. Maximal degree in co-relation 9589. Up to 871 conditions per place. [2022-11-18 20:05:43,930 INFO L137 encePairwiseOnDemand]: 645/657 looper letters, 154 selfloop transitions, 21 changer transitions 0/660 dead transitions. [2022-11-18 20:05:43,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 660 transitions, 2202 flow [2022-11-18 20:05:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:05:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:05:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4518 transitions. [2022-11-18 20:05:43,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7640791476407914 [2022-11-18 20:05:43,936 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4518 transitions. [2022-11-18 20:05:43,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4518 transitions. [2022-11-18 20:05:43,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:43,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4518 transitions. [2022-11-18 20:05:43,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 502.0) internal successors, (4518), 9 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 657.0) internal successors, (6570), 10 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,954 INFO L175 Difference]: Start difference. First operand has 636 places, 660 transitions, 1860 flow. Second operand 9 states and 4518 transitions. [2022-11-18 20:05:43,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 660 transitions, 2202 flow [2022-11-18 20:05:43,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 660 transitions, 2079 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-18 20:05:43,968 INFO L231 Difference]: Finished difference. Result has 629 places, 658 transitions, 1767 flow [2022-11-18 20:05:43,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1767, PETRI_PLACES=629, PETRI_TRANSITIONS=658} [2022-11-18 20:05:43,970 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 32 predicate places. [2022-11-18 20:05:43,970 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 658 transitions, 1767 flow [2022-11-18 20:05:43,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 495.5) internal successors, (3964), 8 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:43,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:43,972 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:43,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:05:43,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:43,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:43,973 INFO L85 PathProgramCache]: Analyzing trace with hash -171416725, now seen corresponding path program 1 times [2022-11-18 20:05:43,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:43,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529024667] [2022-11-18 20:05:43,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:43,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:05:44,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:44,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529024667] [2022-11-18 20:05:44,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529024667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:44,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:44,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:05:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248403620] [2022-11-18 20:05:44,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:44,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:05:44,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:05:44,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:05:44,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 518 out of 657 [2022-11-18 20:05:44,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 658 transitions, 1767 flow. Second operand has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:44,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:44,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 518 of 657 [2022-11-18 20:05:44,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:46,671 INFO L130 PetriNetUnfolder]: 671/8321 cut-off events. [2022-11-18 20:05:46,672 INFO L131 PetriNetUnfolder]: For 322/357 co-relation queries the response was YES. [2022-11-18 20:05:46,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9471 conditions, 8321 events. 671/8321 cut-off events. For 322/357 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82575 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9134. Up to 814 conditions per place. [2022-11-18 20:05:46,767 INFO L137 encePairwiseOnDemand]: 650/657 looper letters, 80 selfloop transitions, 5 changer transitions 0/656 dead transitions. [2022-11-18 20:05:46,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 656 transitions, 1933 flow [2022-11-18 20:05:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:46,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2677 transitions. [2022-11-18 20:05:46,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8149162861491629 [2022-11-18 20:05:46,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2677 transitions. [2022-11-18 20:05:46,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2677 transitions. [2022-11-18 20:05:46,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:46,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2677 transitions. [2022-11-18 20:05:46,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 535.4) internal successors, (2677), 5 states have internal predecessors, (2677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:46,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:46,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:46,782 INFO L175 Difference]: Start difference. First operand has 629 places, 658 transitions, 1767 flow. Second operand 5 states and 2677 transitions. [2022-11-18 20:05:46,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 656 transitions, 1933 flow [2022-11-18 20:05:46,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 656 transitions, 1893 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:05:46,796 INFO L231 Difference]: Finished difference. Result has 624 places, 656 transitions, 1733 flow [2022-11-18 20:05:46,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1733, PETRI_PLACES=624, PETRI_TRANSITIONS=656} [2022-11-18 20:05:46,798 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 27 predicate places. [2022-11-18 20:05:46,798 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 656 transitions, 1733 flow [2022-11-18 20:05:46,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 525.0) internal successors, (2625), 5 states have internal predecessors, (2625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:46,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:46,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:46,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:05:46,799 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:46,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1018950175, now seen corresponding path program 1 times [2022-11-18 20:05:46,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:46,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892557852] [2022-11-18 20:05:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:05:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:46,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892557852] [2022-11-18 20:05:46,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892557852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:46,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:46,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:46,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064929216] [2022-11-18 20:05:46,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:46,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:46,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:46,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 598 out of 657 [2022-11-18 20:05:46,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 656 transitions, 1733 flow. Second operand has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:46,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:46,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 598 of 657 [2022-11-18 20:05:46,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:49,779 INFO L130 PetriNetUnfolder]: 671/8308 cut-off events. [2022-11-18 20:05:49,779 INFO L131 PetriNetUnfolder]: For 289/324 co-relation queries the response was YES. [2022-11-18 20:05:49,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9222 conditions, 8308 events. 671/8308 cut-off events. For 289/324 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 82423 event pairs, 273 based on Foata normal form. 0/7076 useless extension candidates. Maximal degree in co-relation 9103. Up to 604 conditions per place. [2022-11-18 20:05:49,939 INFO L137 encePairwiseOnDemand]: 652/657 looper letters, 21 selfloop transitions, 3 changer transitions 0/654 dead transitions. [2022-11-18 20:05:49,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 625 places, 654 transitions, 1777 flow [2022-11-18 20:05:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:05:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:05:49,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2418 transitions. [2022-11-18 20:05:49,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200913242009132 [2022-11-18 20:05:49,944 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2418 transitions. [2022-11-18 20:05:49,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2418 transitions. [2022-11-18 20:05:49,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:49,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2418 transitions. [2022-11-18 20:05:49,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:49,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:49,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 657.0) internal successors, (3285), 5 states have internal predecessors, (3285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:49,959 INFO L175 Difference]: Start difference. First operand has 624 places, 656 transitions, 1733 flow. Second operand 4 states and 2418 transitions. [2022-11-18 20:05:49,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 625 places, 654 transitions, 1777 flow [2022-11-18 20:05:49,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 654 transitions, 1767 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:05:49,981 INFO L231 Difference]: Finished difference. Result has 621 places, 654 transitions, 1725 flow [2022-11-18 20:05:49,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=621, PETRI_TRANSITIONS=654} [2022-11-18 20:05:49,983 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 24 predicate places. [2022-11-18 20:05:49,983 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 654 transitions, 1725 flow [2022-11-18 20:05:49,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 600.25) internal successors, (2401), 4 states have internal predecessors, (2401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:49,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:49,986 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:49,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:05:49,986 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1389492238, now seen corresponding path program 1 times [2022-11-18 20:05:49,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:49,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372707367] [2022-11-18 20:05:49,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:49,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:50,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:50,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372707367] [2022-11-18 20:05:50,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372707367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:50,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355802170] [2022-11-18 20:05:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:50,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:50,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:50,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:50,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:05:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:50,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:05:50,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:50,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:05:51,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355802170] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:05:51,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:05:51,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 20:05:51,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082232961] [2022-11-18 20:05:51,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:51,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:05:51,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:05:51,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:05:51,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:05:51,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 654 transitions, 1725 flow. Second operand has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:51,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:51,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:05:51,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:54,832 INFO L130 PetriNetUnfolder]: 254/6440 cut-off events. [2022-11-18 20:05:54,832 INFO L131 PetriNetUnfolder]: For 730/760 co-relation queries the response was YES. [2022-11-18 20:05:54,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 6440 events. 254/6440 cut-off events. For 730/760 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 50694 event pairs, 0 based on Foata normal form. 16/5781 useless extension candidates. Maximal degree in co-relation 7404. Up to 84 conditions per place. [2022-11-18 20:05:54,898 INFO L137 encePairwiseOnDemand]: 638/657 looper letters, 306 selfloop transitions, 158 changer transitions 0/1005 dead transitions. [2022-11-18 20:05:54,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 1005 transitions, 4035 flow [2022-11-18 20:05:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:05:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:05:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 26220 transitions. [2022-11-18 20:05:54,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070153590701536 [2022-11-18 20:05:54,925 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 26220 transitions. [2022-11-18 20:05:54,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 26220 transitions. [2022-11-18 20:05:54,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:54,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 26220 transitions. [2022-11-18 20:05:54,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 595.9090909090909) internal successors, (26220), 44 states have internal predecessors, (26220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:55,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:55,016 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 657.0) internal successors, (29565), 45 states have internal predecessors, (29565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:55,016 INFO L175 Difference]: Start difference. First operand has 621 places, 654 transitions, 1725 flow. Second operand 44 states and 26220 transitions. [2022-11-18 20:05:55,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 1005 transitions, 4035 flow [2022-11-18 20:05:55,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 1005 transitions, 4029 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:05:55,042 INFO L231 Difference]: Finished difference. Result has 670 places, 747 transitions, 2723 flow [2022-11-18 20:05:55,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2723, PETRI_PLACES=670, PETRI_TRANSITIONS=747} [2022-11-18 20:05:55,045 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 73 predicate places. [2022-11-18 20:05:55,045 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 747 transitions, 2723 flow [2022-11-18 20:05:55,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 588.5) internal successors, (18832), 32 states have internal predecessors, (18832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:55,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:55,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:55,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:55,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:05:55,258 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:55,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1330110677, now seen corresponding path program 1 times [2022-11-18 20:05:55,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:55,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145309028] [2022-11-18 20:05:55,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:55,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:05:55,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:55,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145309028] [2022-11-18 20:05:55,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145309028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:05:55,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:05:55,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:05:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232780687] [2022-11-18 20:05:55,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:05:55,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:05:55,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:05:55,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:05:55,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:05:55,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 585 out of 657 [2022-11-18 20:05:55,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 747 transitions, 2723 flow. Second operand has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:55,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:05:55,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 585 of 657 [2022-11-18 20:05:55,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:05:59,577 INFO L130 PetriNetUnfolder]: 464/10955 cut-off events. [2022-11-18 20:05:59,577 INFO L131 PetriNetUnfolder]: For 941/1001 co-relation queries the response was YES. [2022-11-18 20:05:59,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12910 conditions, 10955 events. 464/10955 cut-off events. For 941/1001 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 105640 event pairs, 0 based on Foata normal form. 0/9695 useless extension candidates. Maximal degree in co-relation 12242. Up to 646 conditions per place. [2022-11-18 20:05:59,787 INFO L137 encePairwiseOnDemand]: 637/657 looper letters, 58 selfloop transitions, 14 changer transitions 0/778 dead transitions. [2022-11-18 20:05:59,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 778 transitions, 2935 flow [2022-11-18 20:05:59,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:05:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:05:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3003 transitions. [2022-11-18 20:05:59,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9141552511415525 [2022-11-18 20:05:59,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3003 transitions. [2022-11-18 20:05:59,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3003 transitions. [2022-11-18 20:05:59,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:05:59,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3003 transitions. [2022-11-18 20:05:59,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:59,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:59,809 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 657.0) internal successors, (3942), 6 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:59,810 INFO L175 Difference]: Start difference. First operand has 670 places, 747 transitions, 2723 flow. Second operand 5 states and 3003 transitions. [2022-11-18 20:05:59,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 778 transitions, 2935 flow [2022-11-18 20:05:59,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 659 places, 778 transitions, 2835 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 20:05:59,846 INFO L231 Difference]: Finished difference. Result has 662 places, 758 transitions, 2727 flow [2022-11-18 20:05:59,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=657, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=655, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2727, PETRI_PLACES=662, PETRI_TRANSITIONS=758} [2022-11-18 20:05:59,848 INFO L288 CegarLoopForPetriNet]: 597 programPoint places, 65 predicate places. [2022-11-18 20:05:59,849 INFO L495 AbstractCegarLoop]: Abstraction has has 662 places, 758 transitions, 2727 flow [2022-11-18 20:05:59,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 586.5) internal successors, (2346), 4 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:05:59,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:05:59,851 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:59,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:05:59,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 60 more)] === [2022-11-18 20:05:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash -2077222249, now seen corresponding path program 1 times [2022-11-18 20:05:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:59,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288186489] [2022-11-18 20:05:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:06:00,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:00,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288186489] [2022-11-18 20:06:00,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288186489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:00,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165301129] [2022-11-18 20:06:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:00,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:00,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:00,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b445812f-4e3f-4aa9-99e2-fe09081824ef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:06:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:00,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:06:00,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:00,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:01,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165301129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:06:01,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:06:01,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-18 20:06:01,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359050382] [2022-11-18 20:06:01,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:01,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:06:01,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:06:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:06:01,314 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 504 out of 657 [2022-11-18 20:06:01,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 758 transitions, 2727 flow. Second operand has 25 states, 25 states have (on average 509.76) internal successors, (12744), 25 states have internal predecessors, (12744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:01,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:01,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 504 of 657 [2022-11-18 20:06:01,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand