./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/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_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/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_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- 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 19:43:35,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:43:35,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:43:35,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:43:35,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:43:35,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:43:35,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:43:35,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:43:35,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:43:35,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:43:35,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:43:35,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:43:35,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:43:35,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:43:35,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:43:35,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:43:35,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:43:35,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:43:35,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:43:35,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:43:35,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:43:35,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:43:35,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:43:35,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:43:35,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:43:35,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:43:35,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:43:35,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:43:35,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:43:35,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:43:35,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:43:35,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:43:35,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:43:35,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:43:35,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:43:35,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:43:35,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:43:35,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:43:35,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:43:35,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:43:35,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:43:35,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:43:35,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:43:35,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:43:35,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:43:35,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:43:35,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:43:35,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:43:35,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:43:35,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:43:35,514 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:43:35,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:43:35,516 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:43:35,516 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:43:35,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:43:35,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:43:35,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:43:35,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:43:35,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:43:35,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:43:35,518 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:43:35,519 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:43:35,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:43:35,519 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:43:35,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:43:35,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:43:35,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:43:35,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:43:35,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:43:35,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:43:35,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:43:35,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:43:35,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:43:35,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:43:35,524 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:43:35,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:43:35,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:43:35,525 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_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-11-18 19:43:35,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:43:35,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:43:35,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:43:35,865 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:43:35,866 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:43:35,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-18 19:43:35,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/data/3949f985c/11a2918c61eb4da7984265724b2dd500/FLAGddf390bfc [2022-11-18 19:43:36,732 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:43:36,732 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-18 19:43:36,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/data/3949f985c/11a2918c61eb4da7984265724b2dd500/FLAGddf390bfc [2022-11-18 19:43:36,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/data/3949f985c/11a2918c61eb4da7984265724b2dd500 [2022-11-18 19:43:36,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:43:36,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:43:36,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:43:36,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:43:36,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:43:36,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:43:36" (1/1) ... [2022-11-18 19:43:36,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bf45aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:36, skipping insertion in model container [2022-11-18 19:43:36,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:43:36" (1/1) ... [2022-11-18 19:43:36,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:43:37,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:43:37,622 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_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-18 19:43:37,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:43:37,698 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:43:37,760 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_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-18 19:43:37,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:43:37,868 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:43:37,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37 WrapperNode [2022-11-18 19:43:37,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:43:37,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:43:37,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:43:37,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:43:37,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:37,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:37,974 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-11-18 19:43:37,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:43:37,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:43:37,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:43:37,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:43:37,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:37,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:43:38,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:43:38,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:43:38,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:43:38,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (1/1) ... [2022-11-18 19:43:38,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:43:38,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:38,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:43:38,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:43:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:43:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:43:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:43:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:43:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:43:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:43:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:43:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:43:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:43:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:43:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:43:38,174 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 19:43:38,436 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:43:38,438 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:43:38,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:43:38,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:43:38,800 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-18 19:43:38,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:43:38 BoogieIcfgContainer [2022-11-18 19:43:38,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:43:38,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:43:38,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:43:38,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:43:38,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:43:36" (1/3) ... [2022-11-18 19:43:38,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7340f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:43:38, skipping insertion in model container [2022-11-18 19:43:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:43:37" (2/3) ... [2022-11-18 19:43:38,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7340f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:43:38, skipping insertion in model container [2022-11-18 19:43:38,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:43:38" (3/3) ... [2022-11-18 19:43:38,815 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-11-18 19:43:38,826 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:43:38,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:43:38,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 19:43:38,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:43:38,969 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:43:39,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 178 transitions, 364 flow [2022-11-18 19:43:39,121 INFO L130 PetriNetUnfolder]: 24/217 cut-off events. [2022-11-18 19:43:39,121 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:43:39,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 217 events. 24/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 631 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-11-18 19:43:39,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 178 transitions, 364 flow [2022-11-18 19:43:39,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 175 transitions, 358 flow [2022-11-18 19:43:39,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:43:39,164 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;@33985933, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:43:39,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-18 19:43:39,184 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-18 19:43:39,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:43:39,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:39,186 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] [2022-11-18 19:43:39,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:43:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash -190114343, now seen corresponding path program 1 times [2022-11-18 19:43:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:39,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132504697] [2022-11-18 19:43:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:39,761 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 19:43:39,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:39,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132504697] [2022-11-18 19:43:39,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132504697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:39,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:39,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:39,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948237334] [2022-11-18 19:43:39,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:39,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:39,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:39,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:39,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 178 [2022-11-18 19:43:39,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 175 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 19:43:39,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:39,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 178 [2022-11-18 19:43:39,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:40,058 INFO L130 PetriNetUnfolder]: 1/159 cut-off events. [2022-11-18 19:43:40,058 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-18 19:43:40,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 159 events. 1/159 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 252 event pairs, 0 based on Foata normal form. 55/201 useless extension candidates. Maximal degree in co-relation 118. Up to 7 conditions per place. [2022-11-18 19:43:40,065 INFO L137 encePairwiseOnDemand]: 154/178 looper letters, 10 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-11-18 19:43:40,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 157 transitions, 350 flow [2022-11-18 19:43:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:40,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2022-11-18 19:43:40,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-18 19:43:40,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2022-11-18 19:43:40,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2022-11-18 19:43:40,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:40,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2022-11-18 19:43:40,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 19:43:40,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 19:43:40,134 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 19:43:40,138 INFO L175 Difference]: Start difference. First operand has 160 places, 175 transitions, 358 flow. Second operand 5 states and 801 transitions. [2022-11-18 19:43:40,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 157 transitions, 350 flow [2022-11-18 19:43:40,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:43:40,155 INFO L231 Difference]: Finished difference. Result has 162 places, 155 transitions, 330 flow [2022-11-18 19:43:40,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=162, PETRI_TRANSITIONS=155} [2022-11-18 19:43:40,162 INFO L288 CegarLoopForPetriNet]: 160 programPoint places, 2 predicate places. [2022-11-18 19:43:40,163 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 155 transitions, 330 flow [2022-11-18 19:43:40,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 19:43:40,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:40,166 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] [2022-11-18 19:43:40,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:43:40,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-18 19:43:40,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:40,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1626144710, now seen corresponding path program 1 times [2022-11-18 19:43:40,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:40,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505464511] [2022-11-18 19:43:40,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:40,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:43:40,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:43:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:43:40,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:43:40,348 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:43:40,351 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-18 19:43:40,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-18 19:43:40,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-18 19:43:40,354 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-18 19:43:40,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-18 19:43:40,355 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-18 19:43:40,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-18 19:43:40,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-18 19:43:40,356 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-18 19:43:40,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-18 19:43:40,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-18 19:43:40,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-18 19:43:40,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-18 19:43:40,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-18 19:43:40,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-18 19:43:40,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-18 19:43:40,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-18 19:43:40,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-18 19:43:40,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-18 19:43:40,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-18 19:43:40,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-18 19:43:40,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:43:40,362 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 19:43:40,366 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:43:40,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:43:40,427 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:43:40,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 542 flow [2022-11-18 19:43:40,525 INFO L130 PetriNetUnfolder]: 45/377 cut-off events. [2022-11-18 19:43:40,526 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-18 19:43:40,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 45/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1430 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-18 19:43:40,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 262 transitions, 542 flow [2022-11-18 19:43:40,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 262 transitions, 542 flow [2022-11-18 19:43:40,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:43:40,544 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;@33985933, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:43:40,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-18 19:43:40,552 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-18 19:43:40,553 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:43:40,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:40,553 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] [2022-11-18 19:43:40,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 19:43:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash -367714709, now seen corresponding path program 1 times [2022-11-18 19:43:40,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:40,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433841127] [2022-11-18 19:43:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:40,679 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 19:43:40,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:40,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433841127] [2022-11-18 19:43:40,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433841127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:40,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:40,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398041178] [2022-11-18 19:43:40,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:40,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:40,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:40,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-18 19:43:40,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 262 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 19:43:40,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:40,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-18 19:43:40,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:40,856 INFO L130 PetriNetUnfolder]: 4/312 cut-off events. [2022-11-18 19:43:40,857 INFO L131 PetriNetUnfolder]: For 25/67 co-relation queries the response was YES. [2022-11-18 19:43:40,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 312 events. 4/312 cut-off events. For 25/67 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 984 event pairs, 0 based on Foata normal form. 141/419 useless extension candidates. Maximal degree in co-relation 212. Up to 21 conditions per place. [2022-11-18 19:43:40,863 INFO L137 encePairwiseOnDemand]: 226/262 looper letters, 19 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2022-11-18 19:43:40,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 239 transitions, 542 flow [2022-11-18 19:43:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1172 transitions. [2022-11-18 19:43:40,868 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946564885496183 [2022-11-18 19:43:40,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1172 transitions. [2022-11-18 19:43:40,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1172 transitions. [2022-11-18 19:43:40,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:40,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1172 transitions. [2022-11-18 19:43:40,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 234.4) internal successors, (1172), 5 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 19:43:40,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:40,880 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:40,880 INFO L175 Difference]: Start difference. First operand has 234 places, 262 transitions, 542 flow. Second operand 5 states and 1172 transitions. [2022-11-18 19:43:40,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 239 transitions, 542 flow [2022-11-18 19:43:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 239 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:43:40,888 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 514 flow [2022-11-18 19:43:40,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=514, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2022-11-18 19:43:40,890 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 6 predicate places. [2022-11-18 19:43:40,890 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 514 flow [2022-11-18 19:43:40,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states 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 19:43:40,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:40,891 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:40,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:43:40,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 19:43:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1357296752, now seen corresponding path program 1 times [2022-11-18 19:43:40,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:40,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567913647] [2022-11-18 19:43:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:43:41,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:41,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567913647] [2022-11-18 19:43:41,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567913647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:41,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:41,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:41,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859904899] [2022-11-18 19:43:41,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:41,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:41,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:41,040 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-18 19:43:41,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states 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 19:43:41,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:41,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-18 19:43:41,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:41,190 INFO L130 PetriNetUnfolder]: 4/311 cut-off events. [2022-11-18 19:43:41,190 INFO L131 PetriNetUnfolder]: For 32/71 co-relation queries the response was YES. [2022-11-18 19:43:41,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 311 events. 4/311 cut-off events. For 32/71 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 977 event pairs, 0 based on Foata normal form. 7/288 useless extension candidates. Maximal degree in co-relation 294. Up to 10 conditions per place. [2022-11-18 19:43:41,198 INFO L137 encePairwiseOnDemand]: 256/262 looper letters, 11 selfloop transitions, 8 changer transitions 0/235 dead transitions. [2022-11-18 19:43:41,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 550 flow [2022-11-18 19:43:41,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:41,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1097 transitions. [2022-11-18 19:43:41,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8374045801526717 [2022-11-18 19:43:41,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1097 transitions. [2022-11-18 19:43:41,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1097 transitions. [2022-11-18 19:43:41,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:41,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1097 transitions. [2022-11-18 19:43:41,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states 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 19:43:41,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:41,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:41,220 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 514 flow. Second operand 5 states and 1097 transitions. [2022-11-18 19:43:41,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 550 flow [2022-11-18 19:43:41,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 235 transitions, 548 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:43:41,230 INFO L231 Difference]: Finished difference. Result has 243 places, 235 transitions, 532 flow [2022-11-18 19:43:41,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=532, PETRI_PLACES=243, PETRI_TRANSITIONS=235} [2022-11-18 19:43:41,236 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 9 predicate places. [2022-11-18 19:43:41,237 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 235 transitions, 532 flow [2022-11-18 19:43:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.75) internal successors, (879), 4 states have internal predecessors, (879), 0 states have call successors, (0), 0 states 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 19:43:41,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:41,244 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] [2022-11-18 19:43:41,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:43:41,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 19:43:41,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:41,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1353570917, now seen corresponding path program 1 times [2022-11-18 19:43:41,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:41,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494596052] [2022-11-18 19:43:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:41,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:41,460 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 19:43:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:41,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494596052] [2022-11-18 19:43:41,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494596052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:41,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:41,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:41,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932071916] [2022-11-18 19:43:41,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:41,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:41,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:41,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:41,466 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2022-11-18 19:43:41,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 235 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 19:43:41,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:41,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2022-11-18 19:43:41,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:42,390 INFO L130 PetriNetUnfolder]: 479/2630 cut-off events. [2022-11-18 19:43:42,391 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-11-18 19:43:42,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 2630 events. 479/2630 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 24455 event pairs, 135 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 2351. Up to 579 conditions per place. [2022-11-18 19:43:42,426 INFO L137 encePairwiseOnDemand]: 253/262 looper letters, 53 selfloop transitions, 9 changer transitions 0/269 dead transitions. [2022-11-18 19:43:42,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 269 transitions, 742 flow [2022-11-18 19:43:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1086 transitions. [2022-11-18 19:43:42,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290076335877863 [2022-11-18 19:43:42,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1086 transitions. [2022-11-18 19:43:42,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1086 transitions. [2022-11-18 19:43:42,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:42,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1086 transitions. [2022-11-18 19:43:42,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 19:43:42,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:42,440 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:42,440 INFO L175 Difference]: Start difference. First operand has 243 places, 235 transitions, 532 flow. Second operand 5 states and 1086 transitions. [2022-11-18 19:43:42,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 269 transitions, 742 flow [2022-11-18 19:43:42,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 269 transitions, 730 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:43:42,450 INFO L231 Difference]: Finished difference. Result has 247 places, 243 transitions, 591 flow [2022-11-18 19:43:42,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=247, PETRI_TRANSITIONS=243} [2022-11-18 19:43:42,452 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 13 predicate places. [2022-11-18 19:43:42,452 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 243 transitions, 591 flow [2022-11-18 19:43:42,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 19:43:42,453 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:42,454 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:42,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:43:42,454 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 19:43:42,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash 873474204, now seen corresponding path program 1 times [2022-11-18 19:43:42,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:42,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625440782] [2022-11-18 19:43:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:42,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:42,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625440782] [2022-11-18 19:43:42,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625440782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336779071] [2022-11-18 19:43:42,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:42,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:42,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:42,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:43:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:42,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:43:42,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:42,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:43:42,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336779071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:42,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:42,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:43:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245389434] [2022-11-18 19:43:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:42,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:43:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:43:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:43:42,985 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 262 [2022-11-18 19:43:42,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 243 transitions, 591 flow. Second operand has 6 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 19:43:42,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:42,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 262 [2022-11-18 19:43:42,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:43,244 INFO L130 PetriNetUnfolder]: 13/578 cut-off events. [2022-11-18 19:43:43,244 INFO L131 PetriNetUnfolder]: For 96/207 co-relation queries the response was YES. [2022-11-18 19:43:43,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 578 events. 13/578 cut-off events. For 96/207 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2743 event pairs, 0 based on Foata normal form. 11/527 useless extension candidates. Maximal degree in co-relation 545. Up to 21 conditions per place. [2022-11-18 19:43:43,256 INFO L137 encePairwiseOnDemand]: 257/262 looper letters, 15 selfloop transitions, 6 changer transitions 0/245 dead transitions. [2022-11-18 19:43:43,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 245 transitions, 635 flow [2022-11-18 19:43:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:43:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:43:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1534 transitions. [2022-11-18 19:43:43,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836423118865867 [2022-11-18 19:43:43,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1534 transitions. [2022-11-18 19:43:43,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1534 transitions. [2022-11-18 19:43:43,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:43,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1534 transitions. [2022-11-18 19:43:43,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 219.14285714285714) internal successors, (1534), 7 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states 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 19:43:43,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:43,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 262.0) internal successors, (2096), 8 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:43:43,275 INFO L175 Difference]: Start difference. First operand has 247 places, 243 transitions, 591 flow. Second operand 7 states and 1534 transitions. [2022-11-18 19:43:43,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 245 transitions, 635 flow [2022-11-18 19:43:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 245 transitions, 630 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:43:43,286 INFO L231 Difference]: Finished difference. Result has 251 places, 242 transitions, 594 flow [2022-11-18 19:43:43,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=251, PETRI_TRANSITIONS=242} [2022-11-18 19:43:43,291 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 17 predicate places. [2022-11-18 19:43:43,292 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 242 transitions, 594 flow [2022-11-18 19:43:43,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 218.66666666666666) internal successors, (1312), 6 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 19:43:43,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:43,293 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] [2022-11-18 19:43:43,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:43,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 19:43:43,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2097919965, now seen corresponding path program 1 times [2022-11-18 19:43:43,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:43,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872411852] [2022-11-18 19:43:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:43,647 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 19:43:43,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:43,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872411852] [2022-11-18 19:43:43,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872411852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:43,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:43,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30734799] [2022-11-18 19:43:43,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:43,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2022-11-18 19:43:43,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 242 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 19:43:43,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:43,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2022-11-18 19:43:43,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:44,430 INFO L130 PetriNetUnfolder]: 509/2673 cut-off events. [2022-11-18 19:43:44,430 INFO L131 PetriNetUnfolder]: For 379/379 co-relation queries the response was YES. [2022-11-18 19:43:44,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3923 conditions, 2673 events. 509/2673 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 24896 event pairs, 150 based on Foata normal form. 0/2398 useless extension candidates. Maximal degree in co-relation 2699. Up to 635 conditions per place. [2022-11-18 19:43:44,470 INFO L137 encePairwiseOnDemand]: 253/262 looper letters, 53 selfloop transitions, 11 changer transitions 0/271 dead transitions. [2022-11-18 19:43:44,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 271 transitions, 812 flow [2022-11-18 19:43:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:44,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1086 transitions. [2022-11-18 19:43:44,475 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8290076335877863 [2022-11-18 19:43:44,476 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1086 transitions. [2022-11-18 19:43:44,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1086 transitions. [2022-11-18 19:43:44,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:44,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1086 transitions. [2022-11-18 19:43:44,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 217.2) internal successors, (1086), 5 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 19:43:44,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:44,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states 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 19:43:44,488 INFO L175 Difference]: Start difference. First operand has 251 places, 242 transitions, 594 flow. Second operand 5 states and 1086 transitions. [2022-11-18 19:43:44,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 271 transitions, 812 flow [2022-11-18 19:43:44,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 271 transitions, 801 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:43:44,500 INFO L231 Difference]: Finished difference. Result has 253 places, 246 transitions, 644 flow [2022-11-18 19:43:44,506 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=644, PETRI_PLACES=253, PETRI_TRANSITIONS=246} [2022-11-18 19:43:44,507 INFO L288 CegarLoopForPetriNet]: 234 programPoint places, 19 predicate places. [2022-11-18 19:43:44,508 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 246 transitions, 644 flow [2022-11-18 19:43:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 4 states have internal predecessors, (821), 0 states have call successors, (0), 0 states 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 19:43:44,509 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:44,509 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:44,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:43:44,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-18 19:43:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash 928182735, now seen corresponding path program 1 times [2022-11-18 19:43:44,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:44,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633364825] [2022-11-18 19:43:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:44,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:43:44,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:43:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:43:44,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:43:44,595 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:43:44,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-18 19:43:44,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-18 19:43:44,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-18 19:43:44,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-18 19:43:44,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-18 19:43:44,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-18 19:43:44,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-18 19:43:44,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-18 19:43:44,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-18 19:43:44,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-18 19:43:44,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-18 19:43:44,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-18 19:43:44,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-18 19:43:44,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-18 19:43:44,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-18 19:43:44,602 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-18 19:43:44,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-18 19:43:44,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-18 19:43:44,603 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-18 19:43:44,604 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-18 19:43:44,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-18 19:43:44,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-18 19:43:44,605 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-18 19:43:44,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-18 19:43:44,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-18 19:43:44,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-18 19:43:44,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-18 19:43:44,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-18 19:43:44,607 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-18 19:43:44,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:43:44,608 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 19:43:44,610 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:43:44,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:43:44,732 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:43:44,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 346 transitions, 722 flow [2022-11-18 19:43:44,863 INFO L130 PetriNetUnfolder]: 71/578 cut-off events. [2022-11-18 19:43:44,863 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-18 19:43:44,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 578 events. 71/578 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2414 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-11-18 19:43:44,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 346 transitions, 722 flow [2022-11-18 19:43:44,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 346 transitions, 722 flow [2022-11-18 19:43:44,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:43:44,890 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;@33985933, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:43:44,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-18 19:43:44,897 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-11-18 19:43:44,897 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:43:44,897 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:44,898 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] [2022-11-18 19:43:44,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:43:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1537341565, now seen corresponding path program 1 times [2022-11-18 19:43:44,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:44,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702613021] [2022-11-18 19:43:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:44,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,005 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 19:43:45,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:45,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702613021] [2022-11-18 19:43:45,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702613021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:45,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:45,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:45,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867556889] [2022-11-18 19:43:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:45,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:45,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:45,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:45,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:45,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 346 [2022-11-18 19:43:45,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 346 transitions, 722 flow. Second operand has 4 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states 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 19:43:45,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:45,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 346 [2022-11-18 19:43:45,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:45,302 INFO L130 PetriNetUnfolder]: 10/492 cut-off events. [2022-11-18 19:43:45,303 INFO L131 PetriNetUnfolder]: For 73/199 co-relation queries the response was YES. [2022-11-18 19:43:45,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 492 events. 10/492 cut-off events. For 73/199 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1946 event pairs, 1 based on Foata normal form. 389/822 useless extension candidates. Maximal degree in co-relation 352. Up to 40 conditions per place. [2022-11-18 19:43:45,323 INFO L137 encePairwiseOnDemand]: 298/346 looper letters, 21 selfloop transitions, 4 changer transitions 0/311 dead transitions. [2022-11-18 19:43:45,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 311 transitions, 702 flow [2022-11-18 19:43:45,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1536 transitions. [2022-11-18 19:43:45,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8878612716763006 [2022-11-18 19:43:45,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1536 transitions. [2022-11-18 19:43:45,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1536 transitions. [2022-11-18 19:43:45,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:45,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1536 transitions. [2022-11-18 19:43:45,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.2) internal successors, (1536), 5 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states 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 19:43:45,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:43:45,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:43:45,343 INFO L175 Difference]: Start difference. First operand has 306 places, 346 transitions, 722 flow. Second operand 5 states and 1536 transitions. [2022-11-18 19:43:45,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 311 transitions, 702 flow [2022-11-18 19:43:45,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 311 transitions, 702 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:43:45,355 INFO L231 Difference]: Finished difference. Result has 312 places, 307 transitions, 670 flow [2022-11-18 19:43:45,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=670, PETRI_PLACES=312, PETRI_TRANSITIONS=307} [2022-11-18 19:43:45,358 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 6 predicate places. [2022-11-18 19:43:45,358 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 307 transitions, 670 flow [2022-11-18 19:43:45,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.75) internal successors, (1151), 4 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states 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 19:43:45,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:45,360 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:45,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:43:45,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:43:45,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:45,362 INFO L85 PathProgramCache]: Analyzing trace with hash 108721524, now seen corresponding path program 1 times [2022-11-18 19:43:45,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:45,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870376585] [2022-11-18 19:43:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:45,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:43:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:45,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870376585] [2022-11-18 19:43:45,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870376585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:45,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:45,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:45,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880424351] [2022-11-18 19:43:45,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:45,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:45,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:45,464 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 346 [2022-11-18 19:43:45,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 307 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 19:43:45,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:45,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 346 [2022-11-18 19:43:45,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:45,646 INFO L130 PetriNetUnfolder]: 10/490 cut-off events. [2022-11-18 19:43:45,646 INFO L131 PetriNetUnfolder]: For 80/197 co-relation queries the response was YES. [2022-11-18 19:43:45,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 490 events. 10/490 cut-off events. For 80/197 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1936 event pairs, 1 based on Foata normal form. 11/449 useless extension candidates. Maximal degree in co-relation 509. Up to 20 conditions per place. [2022-11-18 19:43:45,659 INFO L137 encePairwiseOnDemand]: 340/346 looper letters, 13 selfloop transitions, 8 changer transitions 0/307 dead transitions. [2022-11-18 19:43:45,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 307 transitions, 710 flow [2022-11-18 19:43:45,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:45,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1449 transitions. [2022-11-18 19:43:45,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8375722543352602 [2022-11-18 19:43:45,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1449 transitions. [2022-11-18 19:43:45,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1449 transitions. [2022-11-18 19:43:45,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:45,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1449 transitions. [2022-11-18 19:43:45,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.8) internal successors, (1449), 5 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states 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 19:43:45,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:43:45,674 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:43:45,674 INFO L175 Difference]: Start difference. First operand has 312 places, 307 transitions, 670 flow. Second operand 5 states and 1449 transitions. [2022-11-18 19:43:45,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 307 transitions, 710 flow [2022-11-18 19:43:45,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 307 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:43:45,682 INFO L231 Difference]: Finished difference. Result has 315 places, 307 transitions, 688 flow [2022-11-18 19:43:45,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=688, PETRI_PLACES=315, PETRI_TRANSITIONS=307} [2022-11-18 19:43:45,684 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 9 predicate places. [2022-11-18 19:43:45,684 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 307 transitions, 688 flow [2022-11-18 19:43:45,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states 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 19:43:45,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:45,685 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] [2022-11-18 19:43:45,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:43:45,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:43:45,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:45,686 INFO L85 PathProgramCache]: Analyzing trace with hash -296129491, now seen corresponding path program 1 times [2022-11-18 19:43:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:45,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968897105] [2022-11-18 19:43:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:45,792 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 19:43:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:45,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968897105] [2022-11-18 19:43:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968897105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:45,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:45,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97453760] [2022-11-18 19:43:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:45,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:45,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 346 [2022-11-18 19:43:45,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 307 transitions, 688 flow. Second operand has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 19:43:45,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:45,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 346 [2022-11-18 19:43:45,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:54,345 INFO L130 PetriNetUnfolder]: 8409/30796 cut-off events. [2022-11-18 19:43:54,345 INFO L131 PetriNetUnfolder]: For 2606/2606 co-relation queries the response was YES. [2022-11-18 19:43:54,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43840 conditions, 30796 events. 8409/30796 cut-off events. For 2606/2606 co-relation queries the response was YES. Maximal size of possible extension queue 1354. Compared 416187 event pairs, 2861 based on Foata normal form. 0/27091 useless extension candidates. Maximal degree in co-relation 13928. Up to 9129 conditions per place. [2022-11-18 19:43:54,967 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 79 selfloop transitions, 13 changer transitions 0/361 dead transitions. [2022-11-18 19:43:54,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 361 transitions, 1022 flow [2022-11-18 19:43:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:43:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:43:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-11-18 19:43:54,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8242774566473988 [2022-11-18 19:43:54,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-11-18 19:43:54,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-11-18 19:43:54,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:54,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-11-18 19:43:54,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states 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 19:43:54,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:43:54,987 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:43:54,987 INFO L175 Difference]: Start difference. First operand has 315 places, 307 transitions, 688 flow. Second operand 5 states and 1426 transitions. [2022-11-18 19:43:54,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 361 transitions, 1022 flow [2022-11-18 19:43:54,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 361 transitions, 1010 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:43:55,001 INFO L231 Difference]: Finished difference. Result has 319 places, 319 transitions, 777 flow [2022-11-18 19:43:55,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=777, PETRI_PLACES=319, PETRI_TRANSITIONS=319} [2022-11-18 19:43:55,002 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 13 predicate places. [2022-11-18 19:43:55,003 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 319 transitions, 777 flow [2022-11-18 19:43:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 19:43:55,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:55,004 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:43:55,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:43:55,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:43:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:55,005 INFO L85 PathProgramCache]: Analyzing trace with hash -924599150, now seen corresponding path program 1 times [2022-11-18 19:43:55,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:55,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104459593] [2022-11-18 19:43:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:55,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:55,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:55,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104459593] [2022-11-18 19:43:55,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104459593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:43:55,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16995567] [2022-11-18 19:43:55,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:55,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:43:55,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:43:55,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:43:55,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:43:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:55,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:43:55,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:43:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:43:55,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16995567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:55,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:43:55,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:43:55,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889685196] [2022-11-18 19:43:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:55,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:43:55,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:55,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:43:55,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:43:55,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 346 [2022-11-18 19:43:55,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 319 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 288.6666666666667) internal successors, (1732), 6 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states 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 19:43:55,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:55,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 346 [2022-11-18 19:43:55,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:56,135 INFO L130 PetriNetUnfolder]: 111/1847 cut-off events. [2022-11-18 19:43:56,135 INFO L131 PetriNetUnfolder]: For 409/1016 co-relation queries the response was YES. [2022-11-18 19:43:56,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 1847 events. 111/1847 cut-off events. For 409/1016 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14479 event pairs, 27 based on Foata normal form. 30/1649 useless extension candidates. Maximal degree in co-relation 1928. Up to 110 conditions per place. [2022-11-18 19:43:56,179 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 17 selfloop transitions, 6 changer transitions 0/321 dead transitions. [2022-11-18 19:43:56,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 321 transitions, 825 flow [2022-11-18 19:43:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:43:56,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:43:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2026 transitions. [2022-11-18 19:43:56,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8364987613542527 [2022-11-18 19:43:56,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2026 transitions. [2022-11-18 19:43:56,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2026 transitions. [2022-11-18 19:43:56,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:56,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2026 transitions. [2022-11-18 19:43:56,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.42857142857144) internal successors, (2026), 7 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states 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 19:43:56,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 19:43:56,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 19:43:56,201 INFO L175 Difference]: Start difference. First operand has 319 places, 319 transitions, 777 flow. Second operand 7 states and 2026 transitions. [2022-11-18 19:43:56,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 321 transitions, 825 flow [2022-11-18 19:43:56,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 321 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:43:56,210 INFO L231 Difference]: Finished difference. Result has 323 places, 318 transitions, 778 flow [2022-11-18 19:43:56,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=323, PETRI_TRANSITIONS=318} [2022-11-18 19:43:56,211 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 17 predicate places. [2022-11-18 19:43:56,212 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 318 transitions, 778 flow [2022-11-18 19:43:56,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 288.6666666666667) internal successors, (1732), 6 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states 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 19:43:56,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:56,214 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] [2022-11-18 19:43:56,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:43:56,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03ec4d87-f98e-4125-b37a-9e047d3ef6f4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:43:56,420 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:43:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:56,421 INFO L85 PathProgramCache]: Analyzing trace with hash 491024885, now seen corresponding path program 1 times [2022-11-18 19:43:56,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:56,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805182616] [2022-11-18 19:43:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:56,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:56,599 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 19:43:56,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:56,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805182616] [2022-11-18 19:43:56,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805182616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:56,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:56,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:43:56,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843100058] [2022-11-18 19:43:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:43:56,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:43:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:43:56,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 346 [2022-11-18 19:43:56,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 318 transitions, 778 flow. Second operand has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 19:43:56,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:56,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 346 [2022-11-18 19:43:56,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:44:04,342 INFO L130 PetriNetUnfolder]: 9389/34325 cut-off events. [2022-11-18 19:44:04,342 INFO L131 PetriNetUnfolder]: For 7419/7419 co-relation queries the response was YES. [2022-11-18 19:44:04,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53604 conditions, 34325 events. 9389/34325 cut-off events. For 7419/7419 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 473469 event pairs, 3631 based on Foata normal form. 0/30755 useless extension candidates. Maximal degree in co-relation 38123. Up to 10517 conditions per place. [2022-11-18 19:44:04,988 INFO L137 encePairwiseOnDemand]: 335/346 looper letters, 79 selfloop transitions, 17 changer transitions 0/365 dead transitions. [2022-11-18 19:44:04,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 365 transitions, 1132 flow [2022-11-18 19:44:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:44:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:44:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1426 transitions. [2022-11-18 19:44:04,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8242774566473988 [2022-11-18 19:44:04,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1426 transitions. [2022-11-18 19:44:04,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1426 transitions. [2022-11-18 19:44:04,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:44:04,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1426 transitions. [2022-11-18 19:44:05,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.2) internal successors, (1426), 5 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states 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 19:44:05,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:44:05,007 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 346.0) internal successors, (2076), 6 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states 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 19:44:05,007 INFO L175 Difference]: Start difference. First operand has 323 places, 318 transitions, 778 flow. Second operand 5 states and 1426 transitions. [2022-11-18 19:44:05,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 365 transitions, 1132 flow [2022-11-18 19:44:05,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 365 transitions, 1121 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:44:05,071 INFO L231 Difference]: Finished difference. Result has 325 places, 324 transitions, 856 flow [2022-11-18 19:44:05,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=856, PETRI_PLACES=325, PETRI_TRANSITIONS=324} [2022-11-18 19:44:05,073 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 19 predicate places. [2022-11-18 19:44:05,073 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 324 transitions, 856 flow [2022-11-18 19:44:05,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 267.25) internal successors, (1069), 4 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states 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 19:44:05,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:44:05,074 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] [2022-11-18 19:44:05,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:44:05,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:44:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:05,075 INFO L85 PathProgramCache]: Analyzing trace with hash -100466130, now seen corresponding path program 1 times [2022-11-18 19:44:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:05,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847759132] [2022-11-18 19:44:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:05,259 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 19:44:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:05,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847759132] [2022-11-18 19:44:05,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847759132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:05,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:05,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:44:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739605387] [2022-11-18 19:44:05,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:05,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:44:05,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:05,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:44:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:44:05,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 346 [2022-11-18 19:44:05,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 324 transitions, 856 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 19:44:05,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:44:05,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 346 [2022-11-18 19:44:05,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:44:16,521 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread2of3ForFork0InUse, 177#L963-5true, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 258#L938-6true, 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:16,521 INFO L383 tUnfolder$Statistics]: this new event has 195 ancestors and is cut-off event [2022-11-18 19:44:16,521 INFO L386 tUnfolder$Statistics]: existing Event has 192 ancestors and is cut-off event [2022-11-18 19:44:16,521 INFO L386 tUnfolder$Statistics]: existing Event has 139 ancestors and is cut-off event [2022-11-18 19:44:16,522 INFO L386 tUnfolder$Statistics]: existing Event has 136 ancestors and is cut-off event [2022-11-18 19:44:16,605 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, 177#L963-5true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 121#L942-6true, 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:16,605 INFO L383 tUnfolder$Statistics]: this new event has 197 ancestors and is cut-off event [2022-11-18 19:44:16,605 INFO L386 tUnfolder$Statistics]: existing Event has 194 ancestors and is cut-off event [2022-11-18 19:44:16,605 INFO L386 tUnfolder$Statistics]: existing Event has 138 ancestors and is cut-off event [2022-11-18 19:44:16,606 INFO L386 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-11-18 19:44:16,710 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, 118#L938-13true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, 177#L963-5true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:16,710 INFO L383 tUnfolder$Statistics]: this new event has 201 ancestors and is cut-off event [2022-11-18 19:44:16,711 INFO L386 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2022-11-18 19:44:16,711 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-18 19:44:16,711 INFO L386 tUnfolder$Statistics]: existing Event has 198 ancestors and is cut-off event [2022-11-18 19:44:16,744 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, 300#L942-13true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, 177#L963-5true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:16,745 INFO L383 tUnfolder$Statistics]: this new event has 203 ancestors and is cut-off event [2022-11-18 19:44:16,745 INFO L386 tUnfolder$Statistics]: existing Event has 200 ancestors and is cut-off event [2022-11-18 19:44:16,745 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-18 19:44:16,745 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-18 19:44:16,769 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, 273#L938-16true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), 177#L963-5true, t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:16,769 INFO L383 tUnfolder$Statistics]: this new event has 204 ancestors and is cut-off event [2022-11-18 19:44:16,769 INFO L386 tUnfolder$Statistics]: existing Event has 148 ancestors and is cut-off event [2022-11-18 19:44:16,769 INFO L386 tUnfolder$Statistics]: existing Event has 201 ancestors and is cut-off event [2022-11-18 19:44:16,770 INFO L386 tUnfolder$Statistics]: existing Event has 145 ancestors and is cut-off event [2022-11-18 19:44:16,798 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][378], [319#true, t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, 177#L963-5true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 527#true, 31#L942-16true, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:16,798 INFO L383 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2022-11-18 19:44:16,799 INFO L386 tUnfolder$Statistics]: existing Event has 150 ancestors and is cut-off event [2022-11-18 19:44:16,799 INFO L386 tUnfolder$Statistics]: existing Event has 203 ancestors and is cut-off event [2022-11-18 19:44:16,799 INFO L386 tUnfolder$Statistics]: existing Event has 147 ancestors and is cut-off event [2022-11-18 19:44:16,848 INFO L130 PetriNetUnfolder]: 16150/54120 cut-off events. [2022-11-18 19:44:16,849 INFO L131 PetriNetUnfolder]: For 13814/13850 co-relation queries the response was YES. [2022-11-18 19:44:17,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87939 conditions, 54120 events. 16150/54120 cut-off events. For 13814/13850 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 777799 event pairs, 4354 based on Foata normal form. 27/48337 useless extension candidates. Maximal degree in co-relation 75368. Up to 12768 conditions per place. [2022-11-18 19:44:17,865 INFO L137 encePairwiseOnDemand]: 328/346 looper letters, 148 selfloop transitions, 48 changer transitions 0/460 dead transitions. [2022-11-18 19:44:17,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 460 transitions, 1711 flow [2022-11-18 19:44:17,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:44:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:44:17,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2543 transitions. [2022-11-18 19:44:17,875 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8166345536287732 [2022-11-18 19:44:17,875 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2543 transitions. [2022-11-18 19:44:17,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2543 transitions. [2022-11-18 19:44:17,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:44:17,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2543 transitions. [2022-11-18 19:44:17,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 282.55555555555554) internal successors, (2543), 9 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states 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 19:44:17,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states 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 19:44:17,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states 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 19:44:17,895 INFO L175 Difference]: Start difference. First operand has 325 places, 324 transitions, 856 flow. Second operand 9 states and 2543 transitions. [2022-11-18 19:44:17,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 460 transitions, 1711 flow [2022-11-18 19:44:17,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 460 transitions, 1700 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:44:17,965 INFO L231 Difference]: Finished difference. Result has 338 places, 355 transitions, 1196 flow [2022-11-18 19:44:17,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1196, PETRI_PLACES=338, PETRI_TRANSITIONS=355} [2022-11-18 19:44:17,968 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 32 predicate places. [2022-11-18 19:44:17,968 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 355 transitions, 1196 flow [2022-11-18 19:44:17,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 19:44:17,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:44:17,969 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] [2022-11-18 19:44:17,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:44:17,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:44:17,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1180518556, now seen corresponding path program 1 times [2022-11-18 19:44:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:17,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743925536] [2022-11-18 19:44:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:18,186 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 19:44:18,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:18,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743925536] [2022-11-18 19:44:18,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743925536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:18,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:18,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:44:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504228708] [2022-11-18 19:44:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:44:18,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:44:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:44:18,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 346 [2022-11-18 19:44:18,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 355 transitions, 1196 flow. Second operand has 5 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states 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 19:44:18,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:44:18,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 346 [2022-11-18 19:44:18,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:44:21,134 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][297], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), t_funThread2of3ForFork0NotInUse, 537#true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), 177#L963-5true, t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:21,134 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-18 19:44:21,134 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-18 19:44:21,135 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-18 19:44:21,135 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-11-18 19:44:21,409 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][297], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), 177#L963-5true, t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), 76#t_funENTRYtrue, Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:21,409 INFO L383 tUnfolder$Statistics]: this new event has 177 ancestors and is cut-off event [2022-11-18 19:44:21,409 INFO L386 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2022-11-18 19:44:21,410 INFO L386 tUnfolder$Statistics]: existing Event has 174 ancestors and is cut-off event [2022-11-18 19:44:21,410 INFO L386 tUnfolder$Statistics]: existing Event has 177 ancestors and is cut-off event [2022-11-18 19:44:21,485 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][297], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), 166#L951true, Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0InUse, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), 177#L963-5true, t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:21,485 INFO L383 tUnfolder$Statistics]: this new event has 182 ancestors and is cut-off event [2022-11-18 19:44:21,485 INFO L386 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2022-11-18 19:44:21,485 INFO L386 tUnfolder$Statistics]: existing Event has 182 ancestors and is cut-off event [2022-11-18 19:44:21,485 INFO L386 tUnfolder$Statistics]: existing Event has 179 ancestors and is cut-off event [2022-11-18 19:44:22,051 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1293] t_funEXIT-->L963-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} OutVars{t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_11|} AuxVars[] AssignedVars[][246], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), 537#true, t_funThread2of3ForFork0NotInUse, 177#L963-5true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), 566#(and (<= |t_funThread1of3ForFork0_~g~0#1.offset| |#funAddr~good.offset|) (<= |t_funThread1of3ForFork0_##fun~~TO~VOID_#in~#fp#1.offset| |#funAddr~good.offset|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:22,051 INFO L383 tUnfolder$Statistics]: this new event has 221 ancestors and is cut-off event [2022-11-18 19:44:22,052 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-18 19:44:22,052 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-11-18 19:44:22,052 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-18 19:44:22,072 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1294] t_funEXIT-->L963-5: Formula: (= v_t_funThread2of3ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem48#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem48#1=|v_ULTIMATE.start_main_#t~mem48#1_13|} AuxVars[] AssignedVars[][306], [319#true, Black: 540#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), Black: 546#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (<= ~global~0 1)), Black: 541#(<= ~global~0 1), Black: 542#(<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1), Black: 548#(and (<= ~global~0 1) (<= |t_funThread1of3ForFork0_bad_#t~post34#1| 1)), t_funThread1of3ForFork0NotInUse, Black: 330#(= ~global~0 0), 537#true, Black: 331#(= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|), t_funThread2of3ForFork0NotInUse, 177#L963-5true, Black: 333#(and (= 0 |t_funThread1of3ForFork0_bad_#t~post32#1|) (= ~global~0 0)), t_funThread3of3ForFork0NotInUse, 556#true, Black: 529#(= ~global~0 0), Black: 530#(= |t_funThread1of3ForFork0_good_#t~post37#1| 0), Black: 532#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_good_#t~post37#1| 0)), Black: 314#(and (= |ULTIMATE.start_main_~i~0#1| 0) (= 0 |ULTIMATE.start_main_#t~post41#1|)), Black: 311#(= |ULTIMATE.start_main_~i~0#1| 0), 342#(<= 1 |ULTIMATE.start_main_~i~0#1|)]) [2022-11-18 19:44:22,072 INFO L383 tUnfolder$Statistics]: this new event has 218 ancestors and is cut-off event [2022-11-18 19:44:22,072 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-18 19:44:22,072 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-18 19:44:22,072 INFO L386 tUnfolder$Statistics]: existing Event has 165 ancestors and is cut-off event [2022-11-18 19:44:22,085 INFO L130 PetriNetUnfolder]: 1306/14525 cut-off events. [2022-11-18 19:44:22,085 INFO L131 PetriNetUnfolder]: For 6769/7488 co-relation queries the response was YES. [2022-11-18 19:44:22,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 14525 events. 1306/14525 cut-off events. For 6769/7488 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 192425 event pairs, 347 based on Foata normal form. 89/12939 useless extension candidates. Maximal degree in co-relation 18548. Up to 980 conditions per place. [2022-11-18 19:44:22,364 INFO L137 encePairwiseOnDemand]: 341/346 looper letters, 35 selfloop transitions, 7 changer transitions 0/382 dead transitions. [2022-11-18 19:44:22,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 382 transitions, 1373 flow [2022-11-18 19:44:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:44:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:44:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2067 transitions. [2022-11-18 19:44:22,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8534269199009084 [2022-11-18 19:44:22,370 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2067 transitions. [2022-11-18 19:44:22,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2067 transitions. [2022-11-18 19:44:22,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:44:22,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2067 transitions. [2022-11-18 19:44:22,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 295.2857142857143) internal successors, (2067), 7 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states 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 19:44:22,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 19:44:22,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 346.0) internal successors, (2768), 8 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 19:44:22,385 INFO L175 Difference]: Start difference. First operand has 338 places, 355 transitions, 1196 flow. Second operand 7 states and 2067 transitions. [2022-11-18 19:44:22,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 382 transitions, 1373 flow [2022-11-18 19:44:22,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 382 transitions, 1301 flow, removed 24 selfloop flow, removed 3 redundant places. [2022-11-18 19:44:22,425 INFO L231 Difference]: Finished difference. Result has 344 places, 360 transitions, 1163 flow [2022-11-18 19:44:22,426 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1163, PETRI_PLACES=344, PETRI_TRANSITIONS=360} [2022-11-18 19:44:22,427 INFO L288 CegarLoopForPetriNet]: 306 programPoint places, 38 predicate places. [2022-11-18 19:44:22,427 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 360 transitions, 1163 flow [2022-11-18 19:44:22,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states 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 19:44:22,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:44:22,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:44:22,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:44:22,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-18 19:44:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:44:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1740761518, now seen corresponding path program 1 times [2022-11-18 19:44:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:44:22,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010670931] [2022-11-18 19:44:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:44:22,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:44:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:44:22,564 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 19:44:22,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:44:22,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010670931] [2022-11-18 19:44:22,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010670931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:44:22,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:44:22,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:44:22,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472948848] [2022-11-18 19:44:22,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:44:22,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:44:22,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:44:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:44:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:44:22,570 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 346 [2022-11-18 19:44:22,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 360 transitions, 1163 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 19:44:22,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:44:22,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 346 [2022-11-18 19:44:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand