./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/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_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/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_a15f9e53-1241-463c-aff6-4cec4a0cd181/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 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a --- 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 18:33:59,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:33:59,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:33:59,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:33:59,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:33:59,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:33:59,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:33:59,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:33:59,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:33:59,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:33:59,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:33:59,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:33:59,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:33:59,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:33:59,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:33:59,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:33:59,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:33:59,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:33:59,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:33:59,339 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:33:59,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:33:59,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:33:59,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:33:59,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:33:59,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:33:59,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:33:59,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:33:59,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:33:59,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:33:59,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:33:59,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:33:59,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:33:59,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:33:59,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:33:59,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:33:59,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:33:59,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:33:59,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:33:59,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:33:59,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:33:59,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:33:59,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:33:59,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:33:59,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:33:59,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:33:59,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:33:59,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:33:59,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:33:59,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:33:59,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:33:59,389 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:33:59,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:33:59,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:33:59,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:33:59,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:33:59,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:33:59,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:33:59,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:33:59,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:33:59,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:33:59,391 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:33:59,391 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:33:59,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:33:59,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:33:59,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:33:59,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:33:59,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:33:59,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:33:59,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:33:59,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:33:59,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:33:59,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:33:59,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:33:59,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:33:59,394 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:33:59,394 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:33:59,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:33:59,394 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_a15f9e53-1241-463c-aff6-4cec4a0cd181/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d465ba9caf460ed15aca3aec6b262b1ee2c4f0003cc0e5fbc446c20cfe164a [2022-11-18 18:33:59,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:33:59,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:33:59,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:33:59,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:33:59,727 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:33:59,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-11-18 18:33:59,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/data/ac01a1612/f3249915786c454cba6d6af5094df813/FLAGa2a4caae6 [2022-11-18 18:34:00,402 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:34:00,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/sv-benchmarks/c/goblint-regression/06-symbeq_15-list_entry_nr.i [2022-11-18 18:34:00,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/data/ac01a1612/f3249915786c454cba6d6af5094df813/FLAGa2a4caae6 [2022-11-18 18:34:00,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/data/ac01a1612/f3249915786c454cba6d6af5094df813 [2022-11-18 18:34:00,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:34:00,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:34:00,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:00,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:34:00,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:34:00,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:00" (1/1) ... [2022-11-18 18:34:00,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131f94dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:00, skipping insertion in model container [2022-11-18 18:34:00,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:00" (1/1) ... [2022-11-18 18:34:00,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:34:00,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:01,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:01,434 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:34:01,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:01,571 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:34:01,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01 WrapperNode [2022-11-18 18:34:01,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:01,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:01,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:34:01,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:34:01,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,626 INFO L138 Inliner]: procedures = 365, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-11-18 18:34:01,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:01,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:34:01,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:34:01,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:34:01,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:34:01,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:34:01,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:34:01,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:34:01,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (1/1) ... [2022-11-18 18:34:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:01,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:01,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:34:01,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a15f9e53-1241-463c-aff6-4cec4a0cd181/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:34:01,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:34:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:34:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:34:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:34:01,788 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:34:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:34:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 18:34:01,789 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 18:34:01,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:34:01,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:34:01,793 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 18:34:02,052 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:34:02,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:34:02,259 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:34:02,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:34:02,267 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:34:02,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:02 BoogieIcfgContainer [2022-11-18 18:34:02,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:34:02,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:34:02,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:34:02,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:34:02,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:34:00" (1/3) ... [2022-11-18 18:34:02,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59de6464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:02, skipping insertion in model container [2022-11-18 18:34:02,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:01" (2/3) ... [2022-11-18 18:34:02,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59de6464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:02, skipping insertion in model container [2022-11-18 18:34:02,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:02" (3/3) ... [2022-11-18 18:34:02,284 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_15-list_entry_nr.i [2022-11-18 18:34:02,294 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:34:02,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:34:02,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 18:34:02,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:34:02,369 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:34:02,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 151 flow [2022-11-18 18:34:02,486 INFO L130 PetriNetUnfolder]: 0/72 cut-off events. [2022-11-18 18:34:02,486 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:34:02,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 0/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-18 18:34:02,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 73 transitions, 151 flow [2022-11-18 18:34:02,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 72 transitions, 147 flow [2022-11-18 18:34:02,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:02,528 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6b8236f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:02,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 18:34:02,559 INFO L130 PetriNetUnfolder]: 0/45 cut-off events. [2022-11-18 18:34:02,562 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:34:02,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:02,563 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] [2022-11-18 18:34:02,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:02,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:02,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1780094849, now seen corresponding path program 1 times [2022-11-18 18:34:02,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:02,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163364437] [2022-11-18 18:34:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:04,253 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 18:34:04,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:04,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163364437] [2022-11-18 18:34:04,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163364437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:04,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:04,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 18:34:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436582987] [2022-11-18 18:34:04,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:04,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:04,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:04,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-18 18:34:04,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 147 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 18:34:04,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:04,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-18 18:34:04,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:06,003 INFO L130 PetriNetUnfolder]: 84/383 cut-off events. [2022-11-18 18:34:06,004 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:34:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 383 events. 84/383 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1937 event pairs, 2 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 552. Up to 29 conditions per place. [2022-11-18 18:34:06,010 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 64 selfloop transitions, 36 changer transitions 24/161 dead transitions. [2022-11-18 18:34:06,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 573 flow [2022-11-18 18:34:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 18:34:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 18:34:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1078 transitions. [2022-11-18 18:34:06,031 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5906849315068493 [2022-11-18 18:34:06,032 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1078 transitions. [2022-11-18 18:34:06,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1078 transitions. [2022-11-18 18:34:06,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:06,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1078 transitions. [2022-11-18 18:34:06,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 43.12) internal successors, (1078), 25 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 18:34:06,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states 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 18:34:06,056 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 73.0) internal successors, (1898), 26 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states 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 18:34:06,058 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 147 flow. Second operand 25 states and 1078 transitions. [2022-11-18 18:34:06,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 161 transitions, 573 flow [2022-11-18 18:34:06,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 161 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:34:06,067 INFO L231 Difference]: Finished difference. Result has 110 places, 96 transitions, 334 flow [2022-11-18 18:34:06,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=334, PETRI_PLACES=110, PETRI_TRANSITIONS=96} [2022-11-18 18:34:06,073 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 34 predicate places. [2022-11-18 18:34:06,074 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 96 transitions, 334 flow [2022-11-18 18:34:06,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 18:34:06,075 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:06,075 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] [2022-11-18 18:34:06,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:34:06,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:06,076 INFO L85 PathProgramCache]: Analyzing trace with hash -651634337, now seen corresponding path program 1 times [2022-11-18 18:34:06,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:06,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308528838] [2022-11-18 18:34:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:06,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:06,766 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 18:34:06,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:06,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308528838] [2022-11-18 18:34:06,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308528838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:06,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:06,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 18:34:06,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193700995] [2022-11-18 18:34:06,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:06,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:06,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:06,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:06,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:06,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-18 18:34:06,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 96 transitions, 334 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 18:34:06,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:06,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-18 18:34:06,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:08,103 INFO L130 PetriNetUnfolder]: 62/289 cut-off events. [2022-11-18 18:34:08,104 INFO L131 PetriNetUnfolder]: For 154/170 co-relation queries the response was YES. [2022-11-18 18:34:08,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 651 conditions, 289 events. 62/289 cut-off events. For 154/170 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1377 event pairs, 1 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 586. Up to 45 conditions per place. [2022-11-18 18:34:08,107 INFO L137 encePairwiseOnDemand]: 52/73 looper letters, 53 selfloop transitions, 25 changer transitions 17/132 dead transitions. [2022-11-18 18:34:08,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 636 flow [2022-11-18 18:34:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:34:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 18:34:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 889 transitions. [2022-11-18 18:34:08,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2022-11-18 18:34:08,112 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 889 transitions. [2022-11-18 18:34:08,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 889 transitions. [2022-11-18 18:34:08,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:08,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 889 transitions. [2022-11-18 18:34:08,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 42.333333333333336) internal successors, (889), 21 states have internal predecessors, (889), 0 states have call successors, (0), 0 states 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 18:34:08,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states 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 18:34:08,121 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 73.0) internal successors, (1606), 22 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states 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 18:34:08,121 INFO L175 Difference]: Start difference. First operand has 110 places, 96 transitions, 334 flow. Second operand 21 states and 889 transitions. [2022-11-18 18:34:08,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 636 flow [2022-11-18 18:34:08,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 612 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 18:34:08,129 INFO L231 Difference]: Finished difference. Result has 128 places, 89 transitions, 366 flow [2022-11-18 18:34:08,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=128, PETRI_TRANSITIONS=89} [2022-11-18 18:34:08,131 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 52 predicate places. [2022-11-18 18:34:08,131 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 89 transitions, 366 flow [2022-11-18 18:34:08,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 18:34:08,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:08,132 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] [2022-11-18 18:34:08,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:34:08,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:08,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:08,133 INFO L85 PathProgramCache]: Analyzing trace with hash 654835029, now seen corresponding path program 1 times [2022-11-18 18:34:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:08,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908285899] [2022-11-18 18:34:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:08,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:08,710 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 18:34:08,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:08,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908285899] [2022-11-18 18:34:08,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908285899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:08,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:08,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 18:34:08,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581750886] [2022-11-18 18:34:08,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:08,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:08,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-18 18:34:08,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 89 transitions, 366 flow. Second operand has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 18:34:08,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:08,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-18 18:34:08,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:09,937 INFO L130 PetriNetUnfolder]: 47/272 cut-off events. [2022-11-18 18:34:09,937 INFO L131 PetriNetUnfolder]: For 335/343 co-relation queries the response was YES. [2022-11-18 18:34:09,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 272 events. 47/272 cut-off events. For 335/343 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1348 event pairs, 0 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 696. Up to 38 conditions per place. [2022-11-18 18:34:09,943 INFO L137 encePairwiseOnDemand]: 53/73 looper letters, 46 selfloop transitions, 30 changer transitions 2/124 dead transitions. [2022-11-18 18:34:09,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 699 flow [2022-11-18 18:34:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:34:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:34:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 758 transitions. [2022-11-18 18:34:09,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5768645357686454 [2022-11-18 18:34:09,947 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 758 transitions. [2022-11-18 18:34:09,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 758 transitions. [2022-11-18 18:34:09,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:09,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 758 transitions. [2022-11-18 18:34:09,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 42.111111111111114) internal successors, (758), 18 states have internal predecessors, (758), 0 states have call successors, (0), 0 states 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 18:34:09,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states 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 18:34:09,958 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 73.0) internal successors, (1387), 19 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states 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 18:34:09,958 INFO L175 Difference]: Start difference. First operand has 128 places, 89 transitions, 366 flow. Second operand 18 states and 758 transitions. [2022-11-18 18:34:09,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 699 flow [2022-11-18 18:34:09,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 584 flow, removed 10 selfloop flow, removed 21 redundant places. [2022-11-18 18:34:09,967 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 447 flow [2022-11-18 18:34:09,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=447, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2022-11-18 18:34:09,969 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 47 predicate places. [2022-11-18 18:34:09,970 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 447 flow [2022-11-18 18:34:09,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.4375) internal successors, (631), 16 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 18:34:09,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:09,971 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] [2022-11-18 18:34:09,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:34:09,971 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1174950429, now seen corresponding path program 1 times [2022-11-18 18:34:09,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:09,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234918917] [2022-11-18 18:34:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:09,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:10,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:10,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:10,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234918917] [2022-11-18 18:34:10,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234918917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:10,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:10,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 18:34:10,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892136735] [2022-11-18 18:34:10,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:10,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:10,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:10,556 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 73 [2022-11-18 18:34:10,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 447 flow. Second operand has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 18:34:10,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:10,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 73 [2022-11-18 18:34:10,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:11,689 INFO L130 PetriNetUnfolder]: 44/259 cut-off events. [2022-11-18 18:34:11,690 INFO L131 PetriNetUnfolder]: For 215/222 co-relation queries the response was YES. [2022-11-18 18:34:11,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 259 events. 44/259 cut-off events. For 215/222 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1240 event pairs, 0 based on Foata normal form. 7/262 useless extension candidates. Maximal degree in co-relation 627. Up to 30 conditions per place. [2022-11-18 18:34:11,692 INFO L137 encePairwiseOnDemand]: 51/73 looper letters, 41 selfloop transitions, 29 changer transitions 8/124 dead transitions. [2022-11-18 18:34:11,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 124 transitions, 702 flow [2022-11-18 18:34:11,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:34:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:34:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 796 transitions. [2022-11-18 18:34:11,696 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5739005046863734 [2022-11-18 18:34:11,697 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 796 transitions. [2022-11-18 18:34:11,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 796 transitions. [2022-11-18 18:34:11,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:11,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 796 transitions. [2022-11-18 18:34:11,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 41.89473684210526) internal successors, (796), 19 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 18:34:11,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 18:34:11,703 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 73.0) internal successors, (1460), 20 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states 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 18:34:11,703 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 447 flow. Second operand 19 states and 796 transitions. [2022-11-18 18:34:11,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 124 transitions, 702 flow [2022-11-18 18:34:11,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 676 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-18 18:34:11,714 INFO L231 Difference]: Finished difference. Result has 135 places, 98 transitions, 490 flow [2022-11-18 18:34:11,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=490, PETRI_PLACES=135, PETRI_TRANSITIONS=98} [2022-11-18 18:34:11,716 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 59 predicate places. [2022-11-18 18:34:11,716 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 98 transitions, 490 flow [2022-11-18 18:34:11,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 39.5) internal successors, (632), 16 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 18:34:11,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:11,717 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] [2022-11-18 18:34:11,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:34:11,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:11,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash -740923633, now seen corresponding path program 1 times [2022-11-18 18:34:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:11,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398309741] [2022-11-18 18:34:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:11,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:12,430 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 18:34:12,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:12,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398309741] [2022-11-18 18:34:12,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398309741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:12,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:12,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:34:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300396183] [2022-11-18 18:34:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:12,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:34:12,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:12,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:34:12,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:34:12,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:12,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 98 transitions, 490 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:34:12,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:12,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:12,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:12,893 INFO L130 PetriNetUnfolder]: 76/369 cut-off events. [2022-11-18 18:34:12,893 INFO L131 PetriNetUnfolder]: For 715/723 co-relation queries the response was YES. [2022-11-18 18:34:12,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 369 events. 76/369 cut-off events. For 715/723 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1824 event pairs, 9 based on Foata normal form. 11/376 useless extension candidates. Maximal degree in co-relation 1013. Up to 40 conditions per place. [2022-11-18 18:34:12,899 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 65 selfloop transitions, 21 changer transitions 0/146 dead transitions. [2022-11-18 18:34:12,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 146 transitions, 922 flow [2022-11-18 18:34:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-11-18 18:34:12,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-11-18 18:34:12,903 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-11-18 18:34:12,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-11-18 18:34:12,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:12,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-11-18 18:34:12,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:12,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:12,909 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:12,910 INFO L175 Difference]: Start difference. First operand has 135 places, 98 transitions, 490 flow. Second operand 11 states and 609 transitions. [2022-11-18 18:34:12,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 146 transitions, 922 flow [2022-11-18 18:34:12,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 146 transitions, 803 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-11-18 18:34:12,923 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 530 flow [2022-11-18 18:34:12,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=530, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2022-11-18 18:34:12,926 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 51 predicate places. [2022-11-18 18:34:12,927 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 530 flow [2022-11-18 18:34:12,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:34:12,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:12,928 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] [2022-11-18 18:34:12,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:34:12,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:12,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1973443087, now seen corresponding path program 2 times [2022-11-18 18:34:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:12,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361210305] [2022-11-18 18:34:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:12,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:13,508 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 18:34:13,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:13,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361210305] [2022-11-18 18:34:13,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361210305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:13,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:13,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:34:13,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783146037] [2022-11-18 18:34:13,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:13,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:34:13,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:34:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:34:13,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:13,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 530 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:34:13,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:13,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:13,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:14,053 INFO L130 PetriNetUnfolder]: 129/626 cut-off events. [2022-11-18 18:34:14,054 INFO L131 PetriNetUnfolder]: For 867/883 co-relation queries the response was YES. [2022-11-18 18:34:14,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 626 events. 129/626 cut-off events. For 867/883 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3993 event pairs, 10 based on Foata normal form. 19/639 useless extension candidates. Maximal degree in co-relation 1777. Up to 119 conditions per place. [2022-11-18 18:34:14,060 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2022-11-18 18:34:14,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 171 transitions, 1124 flow [2022-11-18 18:34:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:14,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-18 18:34:14,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-18 18:34:14,063 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-18 18:34:14,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-18 18:34:14,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:14,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-18 18:34:14,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 18:34:14,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:14,067 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:14,068 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 530 flow. Second operand 11 states and 615 transitions. [2022-11-18 18:34:14,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 171 transitions, 1124 flow [2022-11-18 18:34:14,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 171 transitions, 1063 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:14,077 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 720 flow [2022-11-18 18:34:14,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=720, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2022-11-18 18:34:14,078 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 62 predicate places. [2022-11-18 18:34:14,078 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 720 flow [2022-11-18 18:34:14,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:34:14,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:14,079 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] [2022-11-18 18:34:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:34:14,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:14,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:14,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1595994481, now seen corresponding path program 3 times [2022-11-18 18:34:14,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:14,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449495542] [2022-11-18 18:34:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:14,634 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 18:34:14,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:14,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449495542] [2022-11-18 18:34:14,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449495542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:14,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:14,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:34:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357567434] [2022-11-18 18:34:14,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:14,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:34:14,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:34:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:34:14,637 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:14,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 720 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:34:14,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:14,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:14,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:15,178 INFO L130 PetriNetUnfolder]: 137/677 cut-off events. [2022-11-18 18:34:15,178 INFO L131 PetriNetUnfolder]: For 1337/1365 co-relation queries the response was YES. [2022-11-18 18:34:15,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 677 events. 137/677 cut-off events. For 1337/1365 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4449 event pairs, 16 based on Foata normal form. 23/694 useless extension candidates. Maximal degree in co-relation 2047. Up to 84 conditions per place. [2022-11-18 18:34:15,187 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 72 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2022-11-18 18:34:15,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 172 transitions, 1246 flow [2022-11-18 18:34:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 609 transitions. [2022-11-18 18:34:15,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7584059775840598 [2022-11-18 18:34:15,191 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 609 transitions. [2022-11-18 18:34:15,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 609 transitions. [2022-11-18 18:34:15,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:15,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 609 transitions. [2022-11-18 18:34:15,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.36363636363637) internal successors, (609), 11 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:15,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:15,196 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:15,196 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 720 flow. Second operand 11 states and 609 transitions. [2022-11-18 18:34:15,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 172 transitions, 1246 flow [2022-11-18 18:34:15,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 172 transitions, 1229 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:15,210 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 893 flow [2022-11-18 18:34:15,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-11-18 18:34:15,212 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 74 predicate places. [2022-11-18 18:34:15,212 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 893 flow [2022-11-18 18:34:15,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:34:15,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:15,213 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] [2022-11-18 18:34:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:34:15,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash 66018381, now seen corresponding path program 4 times [2022-11-18 18:34:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:15,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074717179] [2022-11-18 18:34:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:15,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:15,715 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 18:34:15,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074717179] [2022-11-18 18:34:15,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074717179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:15,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:15,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335445631] [2022-11-18 18:34:15,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:15,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:15,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:15,718 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:15,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 893 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:15,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:15,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:15,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:16,630 INFO L130 PetriNetUnfolder]: 169/894 cut-off events. [2022-11-18 18:34:16,631 INFO L131 PetriNetUnfolder]: For 2480/2505 co-relation queries the response was YES. [2022-11-18 18:34:16,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2978 conditions, 894 events. 169/894 cut-off events. For 2480/2505 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6637 event pairs, 9 based on Foata normal form. 25/910 useless extension candidates. Maximal degree in co-relation 2891. Up to 97 conditions per place. [2022-11-18 18:34:16,641 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 93 selfloop transitions, 64 changer transitions 0/217 dead transitions. [2022-11-18 18:34:16,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 217 transitions, 1910 flow [2022-11-18 18:34:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:34:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:34:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 924 transitions. [2022-11-18 18:34:16,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7445608380338437 [2022-11-18 18:34:16,644 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 924 transitions. [2022-11-18 18:34:16,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 924 transitions. [2022-11-18 18:34:16,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:16,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 924 transitions. [2022-11-18 18:34:16,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.35294117647059) internal successors, (924), 17 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 18:34:16,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:16,654 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:16,654 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 893 flow. Second operand 17 states and 924 transitions. [2022-11-18 18:34:16,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 217 transitions, 1910 flow [2022-11-18 18:34:16,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 217 transitions, 1778 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:16,673 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1260 flow [2022-11-18 18:34:16,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1260, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2022-11-18 18:34:16,676 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 89 predicate places. [2022-11-18 18:34:16,676 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1260 flow [2022-11-18 18:34:16,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:16,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:16,677 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] [2022-11-18 18:34:16,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:34:16,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash -707654379, now seen corresponding path program 5 times [2022-11-18 18:34:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:16,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626018713] [2022-11-18 18:34:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:16,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:17,198 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 18:34:17,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:17,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626018713] [2022-11-18 18:34:17,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626018713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:17,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:17,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:17,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032582878] [2022-11-18 18:34:17,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:17,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:17,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:17,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:17,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1260 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:17,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:17,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:17,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:17,954 INFO L130 PetriNetUnfolder]: 185/990 cut-off events. [2022-11-18 18:34:17,954 INFO L131 PetriNetUnfolder]: For 3278/3327 co-relation queries the response was YES. [2022-11-18 18:34:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 990 events. 185/990 cut-off events. For 3278/3327 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7679 event pairs, 22 based on Foata normal form. 47/1029 useless extension candidates. Maximal degree in co-relation 3339. Up to 103 conditions per place. [2022-11-18 18:34:17,965 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 84 selfloop transitions, 77 changer transitions 0/221 dead transitions. [2022-11-18 18:34:17,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 221 transitions, 2103 flow [2022-11-18 18:34:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:34:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:34:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 767 transitions. [2022-11-18 18:34:17,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7504892367906066 [2022-11-18 18:34:17,968 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 767 transitions. [2022-11-18 18:34:17,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 767 transitions. [2022-11-18 18:34:17,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:17,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 767 transitions. [2022-11-18 18:34:17,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 54.785714285714285) internal successors, (767), 14 states have internal predecessors, (767), 0 states have call successors, (0), 0 states 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 18:34:17,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states 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 18:34:17,973 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states 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 18:34:17,973 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1260 flow. Second operand 14 states and 767 transitions. [2022-11-18 18:34:17,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 221 transitions, 2103 flow [2022-11-18 18:34:17,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 221 transitions, 1869 flow, removed 79 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:17,997 INFO L231 Difference]: Finished difference. Result has 180 places, 179 transitions, 1534 flow [2022-11-18 18:34:17,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1534, PETRI_PLACES=180, PETRI_TRANSITIONS=179} [2022-11-18 18:34:17,999 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 104 predicate places. [2022-11-18 18:34:17,999 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 179 transitions, 1534 flow [2022-11-18 18:34:18,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:18,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:18,000 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] [2022-11-18 18:34:18,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:34:18,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1884845749, now seen corresponding path program 6 times [2022-11-18 18:34:18,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202700942] [2022-11-18 18:34:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:18,502 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 18:34:18,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:18,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202700942] [2022-11-18 18:34:18,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202700942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:18,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:18,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:18,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572163612] [2022-11-18 18:34:18,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:18,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:18,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:18,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:18,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:18,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 179 transitions, 1534 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:18,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:18,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:18,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:19,577 INFO L130 PetriNetUnfolder]: 224/1211 cut-off events. [2022-11-18 18:34:19,577 INFO L131 PetriNetUnfolder]: For 5048/5090 co-relation queries the response was YES. [2022-11-18 18:34:19,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 1211 events. 224/1211 cut-off events. For 5048/5090 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10015 event pairs, 17 based on Foata normal form. 28/1228 useless extension candidates. Maximal degree in co-relation 4241. Up to 130 conditions per place. [2022-11-18 18:34:19,592 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 123 selfloop transitions, 79 changer transitions 0/262 dead transitions. [2022-11-18 18:34:19,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 262 transitions, 2711 flow [2022-11-18 18:34:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:34:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:34:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 932 transitions. [2022-11-18 18:34:19,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7510072522159549 [2022-11-18 18:34:19,595 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 932 transitions. [2022-11-18 18:34:19,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 932 transitions. [2022-11-18 18:34:19,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:19,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 932 transitions. [2022-11-18 18:34:19,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.8235294117647) internal successors, (932), 17 states have internal predecessors, (932), 0 states have call successors, (0), 0 states 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 18:34:19,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:19,603 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:19,603 INFO L175 Difference]: Start difference. First operand has 180 places, 179 transitions, 1534 flow. Second operand 17 states and 932 transitions. [2022-11-18 18:34:19,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 262 transitions, 2711 flow [2022-11-18 18:34:19,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 262 transitions, 2587 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:19,642 INFO L231 Difference]: Finished difference. Result has 197 places, 200 transitions, 1965 flow [2022-11-18 18:34:19,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1965, PETRI_PLACES=197, PETRI_TRANSITIONS=200} [2022-11-18 18:34:19,643 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 121 predicate places. [2022-11-18 18:34:19,643 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 200 transitions, 1965 flow [2022-11-18 18:34:19,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:19,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:19,644 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] [2022-11-18 18:34:19,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:34:19,645 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:19,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:19,646 INFO L85 PathProgramCache]: Analyzing trace with hash 152154035, now seen corresponding path program 7 times [2022-11-18 18:34:19,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:19,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755017103] [2022-11-18 18:34:19,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:19,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:20,123 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 18:34:20,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:20,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755017103] [2022-11-18 18:34:20,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755017103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:20,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:20,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:20,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399796665] [2022-11-18 18:34:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:20,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:20,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:20,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:20,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 200 transitions, 1965 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:20,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:20,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:20,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:20,981 INFO L130 PetriNetUnfolder]: 268/1491 cut-off events. [2022-11-18 18:34:20,982 INFO L131 PetriNetUnfolder]: For 7239/7304 co-relation queries the response was YES. [2022-11-18 18:34:20,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5509 conditions, 1491 events. 268/1491 cut-off events. For 7239/7304 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13183 event pairs, 33 based on Foata normal form. 43/1521 useless extension candidates. Maximal degree in co-relation 5405. Up to 185 conditions per place. [2022-11-18 18:34:21,000 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 143 selfloop transitions, 90 changer transitions 0/293 dead transitions. [2022-11-18 18:34:21,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 293 transitions, 3326 flow [2022-11-18 18:34:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:34:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:34:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 834 transitions. [2022-11-18 18:34:21,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616438356164383 [2022-11-18 18:34:21,003 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 834 transitions. [2022-11-18 18:34:21,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 834 transitions. [2022-11-18 18:34:21,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:21,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 834 transitions. [2022-11-18 18:34:21,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.6) internal successors, (834), 15 states have internal predecessors, (834), 0 states have call successors, (0), 0 states 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 18:34:21,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:21,008 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:21,008 INFO L175 Difference]: Start difference. First operand has 197 places, 200 transitions, 1965 flow. Second operand 15 states and 834 transitions. [2022-11-18 18:34:21,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 293 transitions, 3326 flow [2022-11-18 18:34:21,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 293 transitions, 3187 flow, removed 39 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:21,061 INFO L231 Difference]: Finished difference. Result has 213 places, 225 transitions, 2480 flow [2022-11-18 18:34:21,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2480, PETRI_PLACES=213, PETRI_TRANSITIONS=225} [2022-11-18 18:34:21,062 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 137 predicate places. [2022-11-18 18:34:21,063 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 225 transitions, 2480 flow [2022-11-18 18:34:21,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:21,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:21,063 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] [2022-11-18 18:34:21,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:34:21,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:21,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1540886853, now seen corresponding path program 8 times [2022-11-18 18:34:21,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:21,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106227752] [2022-11-18 18:34:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:21,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:21,493 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 18:34:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:21,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106227752] [2022-11-18 18:34:21,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106227752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:21,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:21,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:21,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237136084] [2022-11-18 18:34:21,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:21,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:21,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:21,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:21,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:21,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 225 transitions, 2480 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:21,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:21,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:21,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:22,528 INFO L130 PetriNetUnfolder]: 271/1513 cut-off events. [2022-11-18 18:34:22,528 INFO L131 PetriNetUnfolder]: For 9184/9246 co-relation queries the response was YES. [2022-11-18 18:34:22,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5854 conditions, 1513 events. 271/1513 cut-off events. For 9184/9246 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13429 event pairs, 41 based on Foata normal form. 30/1529 useless extension candidates. Maximal degree in co-relation 5742. Up to 149 conditions per place. [2022-11-18 18:34:22,551 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 88 changer transitions 0/301 dead transitions. [2022-11-18 18:34:22,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 301 transitions, 3672 flow [2022-11-18 18:34:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:34:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:34:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 937 transitions. [2022-11-18 18:34:22,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7550362610797744 [2022-11-18 18:34:22,554 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 937 transitions. [2022-11-18 18:34:22,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 937 transitions. [2022-11-18 18:34:22,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:22,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 937 transitions. [2022-11-18 18:34:22,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.11764705882353) internal successors, (937), 17 states have internal predecessors, (937), 0 states have call successors, (0), 0 states 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 18:34:22,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:22,563 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:22,563 INFO L175 Difference]: Start difference. First operand has 213 places, 225 transitions, 2480 flow. Second operand 17 states and 937 transitions. [2022-11-18 18:34:22,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 301 transitions, 3672 flow [2022-11-18 18:34:22,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 301 transitions, 3558 flow, removed 39 selfloop flow, removed 4 redundant places. [2022-11-18 18:34:22,639 INFO L231 Difference]: Finished difference. Result has 232 places, 241 transitions, 2886 flow [2022-11-18 18:34:22,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2372, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2886, PETRI_PLACES=232, PETRI_TRANSITIONS=241} [2022-11-18 18:34:22,640 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 156 predicate places. [2022-11-18 18:34:22,641 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 241 transitions, 2886 flow [2022-11-18 18:34:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:22,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:22,642 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] [2022-11-18 18:34:22,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:34:22,642 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:22,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:22,643 INFO L85 PathProgramCache]: Analyzing trace with hash -751078267, now seen corresponding path program 9 times [2022-11-18 18:34:22,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:22,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952586578] [2022-11-18 18:34:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:22,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,159 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 18:34:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:23,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952586578] [2022-11-18 18:34:23,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952586578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:23,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:23,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493295735] [2022-11-18 18:34:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:23,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:23,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 241 transitions, 2886 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:23,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:23,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:23,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:24,473 INFO L130 PetriNetUnfolder]: 279/1595 cut-off events. [2022-11-18 18:34:24,473 INFO L131 PetriNetUnfolder]: For 11436/11506 co-relation queries the response was YES. [2022-11-18 18:34:24,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6393 conditions, 1595 events. 279/1595 cut-off events. For 11436/11506 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14545 event pairs, 63 based on Foata normal form. 49/1632 useless extension candidates. Maximal degree in co-relation 6274. Up to 275 conditions per place. [2022-11-18 18:34:24,494 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 168 selfloop transitions, 74 changer transitions 0/302 dead transitions. [2022-11-18 18:34:24,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 302 transitions, 4009 flow [2022-11-18 18:34:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:34:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:34:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 721 transitions. [2022-11-18 18:34:24,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7597471022128557 [2022-11-18 18:34:24,497 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 721 transitions. [2022-11-18 18:34:24,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 721 transitions. [2022-11-18 18:34:24,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:24,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 721 transitions. [2022-11-18 18:34:24,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.46153846153846) internal successors, (721), 13 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 18:34:24,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 18:34:24,501 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 18:34:24,502 INFO L175 Difference]: Start difference. First operand has 232 places, 241 transitions, 2886 flow. Second operand 13 states and 721 transitions. [2022-11-18 18:34:24,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 302 transitions, 4009 flow [2022-11-18 18:34:24,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 302 transitions, 3688 flow, removed 128 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:24,586 INFO L231 Difference]: Finished difference. Result has 243 places, 252 transitions, 3083 flow [2022-11-18 18:34:24,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2693, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3083, PETRI_PLACES=243, PETRI_TRANSITIONS=252} [2022-11-18 18:34:24,589 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 167 predicate places. [2022-11-18 18:34:24,589 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 252 transitions, 3083 flow [2022-11-18 18:34:24,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:24,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:24,590 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] [2022-11-18 18:34:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:34:24,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1898240491, now seen corresponding path program 10 times [2022-11-18 18:34:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:24,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014934638] [2022-11-18 18:34:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:25,071 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 18:34:25,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:25,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014934638] [2022-11-18 18:34:25,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014934638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:25,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:25,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:25,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412353263] [2022-11-18 18:34:25,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:25,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:25,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:25,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:25,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 252 transitions, 3083 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:25,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:25,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:25,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:26,140 INFO L130 PetriNetUnfolder]: 282/1629 cut-off events. [2022-11-18 18:34:26,140 INFO L131 PetriNetUnfolder]: For 11412/11473 co-relation queries the response was YES. [2022-11-18 18:34:26,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1629 events. 282/1629 cut-off events. For 11412/11473 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14981 event pairs, 66 based on Foata normal form. 27/1644 useless extension candidates. Maximal degree in co-relation 6366. Up to 331 conditions per place. [2022-11-18 18:34:26,163 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 184 selfloop transitions, 60 changer transitions 0/304 dead transitions. [2022-11-18 18:34:26,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 304 transitions, 4044 flow [2022-11-18 18:34:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:26,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-18 18:34:26,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-18 18:34:26,166 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-18 18:34:26,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-18 18:34:26,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:26,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-18 18:34:26,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 18:34:26,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:26,170 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:26,170 INFO L175 Difference]: Start difference. First operand has 243 places, 252 transitions, 3083 flow. Second operand 11 states and 615 transitions. [2022-11-18 18:34:26,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 304 transitions, 4044 flow [2022-11-18 18:34:26,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 3937 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-18 18:34:26,252 INFO L231 Difference]: Finished difference. Result has 253 places, 263 transitions, 3378 flow [2022-11-18 18:34:26,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3378, PETRI_PLACES=253, PETRI_TRANSITIONS=263} [2022-11-18 18:34:26,253 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 177 predicate places. [2022-11-18 18:34:26,253 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 263 transitions, 3378 flow [2022-11-18 18:34:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:26,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:26,254 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] [2022-11-18 18:34:26,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:34:26,254 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:26,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:26,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2144773403, now seen corresponding path program 11 times [2022-11-18 18:34:26,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:26,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123801632] [2022-11-18 18:34:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:26,665 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 18:34:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123801632] [2022-11-18 18:34:26,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123801632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:26,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:26,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:26,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082443000] [2022-11-18 18:34:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:26,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:26,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:26,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:26,668 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:26,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 263 transitions, 3378 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:26,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:26,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:26,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:27,856 INFO L130 PetriNetUnfolder]: 343/2068 cut-off events. [2022-11-18 18:34:27,857 INFO L131 PetriNetUnfolder]: For 15282/15356 co-relation queries the response was YES. [2022-11-18 18:34:27,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8214 conditions, 2068 events. 343/2068 cut-off events. For 15282/15356 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20615 event pairs, 97 based on Foata normal form. 19/2068 useless extension candidates. Maximal degree in co-relation 8084. Up to 284 conditions per place. [2022-11-18 18:34:27,875 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 254 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2022-11-18 18:34:27,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 352 transitions, 4996 flow [2022-11-18 18:34:27,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 630 transitions. [2022-11-18 18:34:27,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7845579078455791 [2022-11-18 18:34:27,878 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 630 transitions. [2022-11-18 18:34:27,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 630 transitions. [2022-11-18 18:34:27,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:27,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 630 transitions. [2022-11-18 18:34:27,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.27272727272727) internal successors, (630), 11 states have internal predecessors, (630), 0 states have call successors, (0), 0 states 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 18:34:27,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:27,883 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:27,883 INFO L175 Difference]: Start difference. First operand has 253 places, 263 transitions, 3378 flow. Second operand 11 states and 630 transitions. [2022-11-18 18:34:27,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 352 transitions, 4996 flow [2022-11-18 18:34:27,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 352 transitions, 4832 flow, removed 44 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:27,987 INFO L231 Difference]: Finished difference. Result has 262 places, 278 transitions, 3648 flow [2022-11-18 18:34:27,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3648, PETRI_PLACES=262, PETRI_TRANSITIONS=278} [2022-11-18 18:34:27,988 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 186 predicate places. [2022-11-18 18:34:27,988 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 278 transitions, 3648 flow [2022-11-18 18:34:27,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:27,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:27,989 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] [2022-11-18 18:34:27,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:34:27,989 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:27,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:27,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2143238203, now seen corresponding path program 12 times [2022-11-18 18:34:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:27,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339232558] [2022-11-18 18:34:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:27,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:28,466 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 18:34:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:28,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339232558] [2022-11-18 18:34:28,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339232558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:28,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:28,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768410495] [2022-11-18 18:34:28,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:28,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:28,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 278 transitions, 3648 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:28,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:28,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:28,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:29,562 INFO L130 PetriNetUnfolder]: 343/2075 cut-off events. [2022-11-18 18:34:29,562 INFO L131 PetriNetUnfolder]: For 15257/15348 co-relation queries the response was YES. [2022-11-18 18:34:29,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8210 conditions, 2075 events. 343/2075 cut-off events. For 15257/15348 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20743 event pairs, 98 based on Foata normal form. 28/2084 useless extension candidates. Maximal degree in co-relation 8077. Up to 292 conditions per place. [2022-11-18 18:34:29,591 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 223 selfloop transitions, 53 changer transitions 0/336 dead transitions. [2022-11-18 18:34:29,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 336 transitions, 4836 flow [2022-11-18 18:34:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:29,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-11-18 18:34:29,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-11-18 18:34:29,594 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-11-18 18:34:29,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-11-18 18:34:29,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:29,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-11-18 18:34:29,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 18:34:29,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:29,599 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:29,601 INFO L175 Difference]: Start difference. First operand has 262 places, 278 transitions, 3648 flow. Second operand 11 states and 617 transitions. [2022-11-18 18:34:29,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 336 transitions, 4836 flow [2022-11-18 18:34:29,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 336 transitions, 4758 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:29,688 INFO L231 Difference]: Finished difference. Result has 272 places, 288 transitions, 3935 flow [2022-11-18 18:34:29,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3571, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3935, PETRI_PLACES=272, PETRI_TRANSITIONS=288} [2022-11-18 18:34:29,689 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 196 predicate places. [2022-11-18 18:34:29,689 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 288 transitions, 3935 flow [2022-11-18 18:34:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:29,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:29,689 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] [2022-11-18 18:34:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:34:29,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:29,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash -684527419, now seen corresponding path program 13 times [2022-11-18 18:34:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:29,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375445641] [2022-11-18 18:34:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:30,116 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 18:34:30,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:30,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375445641] [2022-11-18 18:34:30,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375445641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:30,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:30,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154358586] [2022-11-18 18:34:30,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:30,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:30,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:30,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:30,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:30,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 288 transitions, 3935 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:30,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:30,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:30,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:31,331 INFO L130 PetriNetUnfolder]: 340/2084 cut-off events. [2022-11-18 18:34:31,331 INFO L131 PetriNetUnfolder]: For 16505/16600 co-relation queries the response was YES. [2022-11-18 18:34:31,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8363 conditions, 2084 events. 340/2084 cut-off events. For 16505/16600 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 20907 event pairs, 94 based on Foata normal form. 31/2097 useless extension candidates. Maximal degree in co-relation 8225. Up to 284 conditions per place. [2022-11-18 18:34:31,347 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 232 selfloop transitions, 52 changer transitions 0/344 dead transitions. [2022-11-18 18:34:31,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 344 transitions, 5103 flow [2022-11-18 18:34:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:31,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-11-18 18:34:31,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-11-18 18:34:31,350 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-11-18 18:34:31,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-11-18 18:34:31,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:31,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-11-18 18:34:31,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 18:34:31,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:31,372 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:31,372 INFO L175 Difference]: Start difference. First operand has 272 places, 288 transitions, 3935 flow. Second operand 11 states and 623 transitions. [2022-11-18 18:34:31,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 344 transitions, 5103 flow [2022-11-18 18:34:31,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 344 transitions, 5018 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-18 18:34:31,470 INFO L231 Difference]: Finished difference. Result has 281 places, 298 transitions, 4256 flow [2022-11-18 18:34:31,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3855, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4256, PETRI_PLACES=281, PETRI_TRANSITIONS=298} [2022-11-18 18:34:31,471 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 205 predicate places. [2022-11-18 18:34:31,472 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 298 transitions, 4256 flow [2022-11-18 18:34:31,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:31,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:31,472 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] [2022-11-18 18:34:31,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:34:31,473 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:31,473 INFO L85 PathProgramCache]: Analyzing trace with hash 42079407, now seen corresponding path program 14 times [2022-11-18 18:34:31,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:31,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937407716] [2022-11-18 18:34:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:31,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:31,915 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 18:34:31,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:31,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937407716] [2022-11-18 18:34:31,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937407716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:31,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:31,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:31,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710827947] [2022-11-18 18:34:31,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:31,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:31,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:31,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:31,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:31,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 298 transitions, 4256 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:31,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:31,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:31,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:33,171 INFO L130 PetriNetUnfolder]: 330/2006 cut-off events. [2022-11-18 18:34:33,171 INFO L131 PetriNetUnfolder]: For 16408/16498 co-relation queries the response was YES. [2022-11-18 18:34:33,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8193 conditions, 2006 events. 330/2006 cut-off events. For 16408/16498 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 19866 event pairs, 94 based on Foata normal form. 22/2012 useless extension candidates. Maximal degree in co-relation 8051. Up to 284 conditions per place. [2022-11-18 18:34:33,195 INFO L137 encePairwiseOnDemand]: 61/73 looper letters, 235 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2022-11-18 18:34:33,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 343 transitions, 5169 flow [2022-11-18 18:34:33,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-11-18 18:34:33,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-11-18 18:34:33,198 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-11-18 18:34:33,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-11-18 18:34:33,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:33,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-11-18 18:34:33,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 18:34:33,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:33,202 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:33,202 INFO L175 Difference]: Start difference. First operand has 281 places, 298 transitions, 4256 flow. Second operand 11 states and 621 transitions. [2022-11-18 18:34:33,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 343 transitions, 5169 flow [2022-11-18 18:34:33,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 343 transitions, 5048 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:33,353 INFO L231 Difference]: Finished difference. Result has 287 places, 300 transitions, 4268 flow [2022-11-18 18:34:33,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4268, PETRI_PLACES=287, PETRI_TRANSITIONS=300} [2022-11-18 18:34:33,354 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 211 predicate places. [2022-11-18 18:34:33,354 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 300 transitions, 4268 flow [2022-11-18 18:34:33,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:33,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:33,355 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] [2022-11-18 18:34:33,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:34:33,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash -820669375, now seen corresponding path program 15 times [2022-11-18 18:34:33,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:33,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386779648] [2022-11-18 18:34:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:33,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:33,813 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 18:34:33,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:33,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386779648] [2022-11-18 18:34:33,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386779648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:33,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:33,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:33,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323809961] [2022-11-18 18:34:33,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:33,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:33,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:33,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 300 transitions, 4268 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:33,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:33,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:33,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:35,121 INFO L130 PetriNetUnfolder]: 317/1945 cut-off events. [2022-11-18 18:34:35,121 INFO L131 PetriNetUnfolder]: For 15355/15436 co-relation queries the response was YES. [2022-11-18 18:34:35,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7937 conditions, 1945 events. 317/1945 cut-off events. For 15355/15436 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 19137 event pairs, 85 based on Foata normal form. 30/1961 useless extension candidates. Maximal degree in co-relation 7793. Up to 284 conditions per place. [2022-11-18 18:34:35,144 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 242 selfloop transitions, 53 changer transitions 0/355 dead transitions. [2022-11-18 18:34:35,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 355 transitions, 5356 flow [2022-11-18 18:34:35,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:34:35,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:34:35,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 676 transitions. [2022-11-18 18:34:35,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.771689497716895 [2022-11-18 18:34:35,151 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 676 transitions. [2022-11-18 18:34:35,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 676 transitions. [2022-11-18 18:34:35,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:35,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 676 transitions. [2022-11-18 18:34:35,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.333333333333336) internal successors, (676), 12 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 18:34:35,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 18:34:35,155 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 18:34:35,155 INFO L175 Difference]: Start difference. First operand has 287 places, 300 transitions, 4268 flow. Second operand 12 states and 676 transitions. [2022-11-18 18:34:35,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 355 transitions, 5356 flow [2022-11-18 18:34:35,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 355 transitions, 5246 flow, removed 15 selfloop flow, removed 7 redundant places. [2022-11-18 18:34:35,290 INFO L231 Difference]: Finished difference. Result has 296 places, 305 transitions, 4444 flow [2022-11-18 18:34:35,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4089, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=296, PETRI_TRANSITIONS=305} [2022-11-18 18:34:35,291 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 220 predicate places. [2022-11-18 18:34:35,292 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 305 transitions, 4444 flow [2022-11-18 18:34:35,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:35,292 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:35,292 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] [2022-11-18 18:34:35,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:34:35,293 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:35,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1942622669, now seen corresponding path program 16 times [2022-11-18 18:34:35,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:35,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574066193] [2022-11-18 18:34:35,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:35,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:35,759 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 18:34:35,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:35,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574066193] [2022-11-18 18:34:35,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574066193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:35,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:35,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:35,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681046277] [2022-11-18 18:34:35,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:35,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:35,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:35,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:35,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:35,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 305 transitions, 4444 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:35,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:35,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:35,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:36,739 INFO L130 PetriNetUnfolder]: 307/1889 cut-off events. [2022-11-18 18:34:36,739 INFO L131 PetriNetUnfolder]: For 14997/15071 co-relation queries the response was YES. [2022-11-18 18:34:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7774 conditions, 1889 events. 307/1889 cut-off events. For 14997/15071 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 18331 event pairs, 46 based on Foata normal form. 25/1902 useless extension candidates. Maximal degree in co-relation 7625. Up to 156 conditions per place. [2022-11-18 18:34:36,759 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 200 selfloop transitions, 107 changer transitions 0/367 dead transitions. [2022-11-18 18:34:36,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 367 transitions, 5485 flow [2022-11-18 18:34:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:34:36,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:34:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 939 transitions. [2022-11-18 18:34:36,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7566478646253022 [2022-11-18 18:34:36,770 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 939 transitions. [2022-11-18 18:34:36,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 939 transitions. [2022-11-18 18:34:36,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:36,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 939 transitions. [2022-11-18 18:34:36,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 55.23529411764706) internal successors, (939), 17 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 18:34:36,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:36,776 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:36,776 INFO L175 Difference]: Start difference. First operand has 296 places, 305 transitions, 4444 flow. Second operand 17 states and 939 transitions. [2022-11-18 18:34:36,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 367 transitions, 5485 flow [2022-11-18 18:34:36,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 367 transitions, 5394 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:36,908 INFO L231 Difference]: Finished difference. Result has 308 places, 307 transitions, 4603 flow [2022-11-18 18:34:36,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4603, PETRI_PLACES=308, PETRI_TRANSITIONS=307} [2022-11-18 18:34:36,911 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 232 predicate places. [2022-11-18 18:34:36,911 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 307 transitions, 4603 flow [2022-11-18 18:34:36,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:36,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:36,912 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] [2022-11-18 18:34:36,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:34:36,912 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1935666979, now seen corresponding path program 17 times [2022-11-18 18:34:36,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:36,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699335218] [2022-11-18 18:34:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:37,286 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 18:34:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:37,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699335218] [2022-11-18 18:34:37,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699335218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:37,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:37,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30817028] [2022-11-18 18:34:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:37,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:37,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:37,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 307 transitions, 4603 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:37,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:37,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:37,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:38,341 INFO L130 PetriNetUnfolder]: 311/1952 cut-off events. [2022-11-18 18:34:38,341 INFO L131 PetriNetUnfolder]: For 16515/16586 co-relation queries the response was YES. [2022-11-18 18:34:38,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 1952 events. 311/1952 cut-off events. For 16515/16586 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 19214 event pairs, 44 based on Foata normal form. 37/1977 useless extension candidates. Maximal degree in co-relation 7964. Up to 164 conditions per place. [2022-11-18 18:34:38,358 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 191 selfloop transitions, 118 changer transitions 0/369 dead transitions. [2022-11-18 18:34:38,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 369 transitions, 5744 flow [2022-11-18 18:34:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:34:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:34:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 888 transitions. [2022-11-18 18:34:38,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7602739726027398 [2022-11-18 18:34:38,361 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 888 transitions. [2022-11-18 18:34:38,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 888 transitions. [2022-11-18 18:34:38,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:38,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 888 transitions. [2022-11-18 18:34:38,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 55.5) internal successors, (888), 16 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 18:34:38,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 18:34:38,366 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 18:34:38,366 INFO L175 Difference]: Start difference. First operand has 308 places, 307 transitions, 4603 flow. Second operand 16 states and 888 transitions. [2022-11-18 18:34:38,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 369 transitions, 5744 flow [2022-11-18 18:34:38,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 369 transitions, 5541 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-11-18 18:34:38,504 INFO L231 Difference]: Finished difference. Result has 316 places, 313 transitions, 4816 flow [2022-11-18 18:34:38,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4816, PETRI_PLACES=316, PETRI_TRANSITIONS=313} [2022-11-18 18:34:38,505 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 240 predicate places. [2022-11-18 18:34:38,506 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 313 transitions, 4816 flow [2022-11-18 18:34:38,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:38,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:38,506 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] [2022-11-18 18:34:38,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 18:34:38,507 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1029775799, now seen corresponding path program 18 times [2022-11-18 18:34:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096951106] [2022-11-18 18:34:38,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:38,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:38,895 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 18:34:38,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:38,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096951106] [2022-11-18 18:34:38,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096951106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:38,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:38,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:38,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730427974] [2022-11-18 18:34:38,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:38,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:38,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:38,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 313 transitions, 4816 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:38,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:38,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:38,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:40,054 INFO L130 PetriNetUnfolder]: 298/1862 cut-off events. [2022-11-18 18:34:40,055 INFO L131 PetriNetUnfolder]: For 15917/15985 co-relation queries the response was YES. [2022-11-18 18:34:40,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7867 conditions, 1862 events. 298/1862 cut-off events. For 15917/15985 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 18160 event pairs, 79 based on Foata normal form. 26/1878 useless extension candidates. Maximal degree in co-relation 7714. Up to 284 conditions per place. [2022-11-18 18:34:40,076 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 246 selfloop transitions, 51 changer transitions 0/357 dead transitions. [2022-11-18 18:34:40,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 357 transitions, 5674 flow [2022-11-18 18:34:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:34:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:34:40,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 671 transitions. [2022-11-18 18:34:40,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7659817351598174 [2022-11-18 18:34:40,079 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 671 transitions. [2022-11-18 18:34:40,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 671 transitions. [2022-11-18 18:34:40,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:40,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 671 transitions. [2022-11-18 18:34:40,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 55.916666666666664) internal successors, (671), 12 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 18:34:40,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 18:34:40,083 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 18:34:40,083 INFO L175 Difference]: Start difference. First operand has 316 places, 313 transitions, 4816 flow. Second operand 12 states and 671 transitions. [2022-11-18 18:34:40,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 357 transitions, 5674 flow [2022-11-18 18:34:40,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 357 transitions, 5459 flow, removed 25 selfloop flow, removed 10 redundant places. [2022-11-18 18:34:40,234 INFO L231 Difference]: Finished difference. Result has 320 places, 313 transitions, 4713 flow [2022-11-18 18:34:40,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4486, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4713, PETRI_PLACES=320, PETRI_TRANSITIONS=313} [2022-11-18 18:34:40,235 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 244 predicate places. [2022-11-18 18:34:40,236 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 313 transitions, 4713 flow [2022-11-18 18:34:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:40,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:40,236 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] [2022-11-18 18:34:40,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 18:34:40,237 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:40,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1618257, now seen corresponding path program 19 times [2022-11-18 18:34:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:40,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049530556] [2022-11-18 18:34:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:40,708 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 18:34:40,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:40,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049530556] [2022-11-18 18:34:40,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049530556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:40,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:40,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247915042] [2022-11-18 18:34:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:40,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:40,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 313 transitions, 4713 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:40,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:40,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:40,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:41,845 INFO L130 PetriNetUnfolder]: 295/1850 cut-off events. [2022-11-18 18:34:41,845 INFO L131 PetriNetUnfolder]: For 15117/15182 co-relation queries the response was YES. [2022-11-18 18:34:41,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1850 events. 295/1850 cut-off events. For 15117/15182 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17956 event pairs, 25 based on Foata normal form. 41/1879 useless extension candidates. Maximal degree in co-relation 7629. Up to 273 conditions per place. [2022-11-18 18:34:41,861 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 150 selfloop transitions, 150 changer transitions 0/360 dead transitions. [2022-11-18 18:34:41,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 360 transitions, 5813 flow [2022-11-18 18:34:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:34:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:34:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 817 transitions. [2022-11-18 18:34:41,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461187214611872 [2022-11-18 18:34:41,863 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 817 transitions. [2022-11-18 18:34:41,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 817 transitions. [2022-11-18 18:34:41,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:41,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 817 transitions. [2022-11-18 18:34:41,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.46666666666667) internal successors, (817), 15 states have internal predecessors, (817), 0 states have call successors, (0), 0 states 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 18:34:41,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:41,867 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:41,867 INFO L175 Difference]: Start difference. First operand has 320 places, 313 transitions, 4713 flow. Second operand 15 states and 817 transitions. [2022-11-18 18:34:41,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 360 transitions, 5813 flow [2022-11-18 18:34:41,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 360 transitions, 5683 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-18 18:34:41,982 INFO L231 Difference]: Finished difference. Result has 330 places, 318 transitions, 5054 flow [2022-11-18 18:34:41,983 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4584, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5054, PETRI_PLACES=330, PETRI_TRANSITIONS=318} [2022-11-18 18:34:41,984 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 254 predicate places. [2022-11-18 18:34:41,984 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 318 transitions, 5054 flow [2022-11-18 18:34:41,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:41,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:41,984 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] [2022-11-18 18:34:41,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 18:34:41,985 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:41,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash 728225083, now seen corresponding path program 20 times [2022-11-18 18:34:41,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:41,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190000048] [2022-11-18 18:34:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:42,398 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 18:34:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190000048] [2022-11-18 18:34:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190000048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:42,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:42,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:42,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287487244] [2022-11-18 18:34:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:42,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:42,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 318 transitions, 5054 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:42,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:42,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:42,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:43,343 INFO L130 PetriNetUnfolder]: 285/1796 cut-off events. [2022-11-18 18:34:43,343 INFO L131 PetriNetUnfolder]: For 15668/15732 co-relation queries the response was YES. [2022-11-18 18:34:43,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7771 conditions, 1796 events. 285/1796 cut-off events. For 15668/15732 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17302 event pairs, 26 based on Foata normal form. 37/1823 useless extension candidates. Maximal degree in co-relation 7611. Up to 273 conditions per place. [2022-11-18 18:34:43,359 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 153 selfloop transitions, 146 changer transitions 0/359 dead transitions. [2022-11-18 18:34:43,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 359 transitions, 6036 flow [2022-11-18 18:34:43,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:34:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:34:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 864 transitions. [2022-11-18 18:34:43,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7397260273972602 [2022-11-18 18:34:43,361 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 864 transitions. [2022-11-18 18:34:43,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 864 transitions. [2022-11-18 18:34:43,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:43,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 864 transitions. [2022-11-18 18:34:43,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 0 states have call successors, (0), 0 states 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 18:34:43,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 18:34:43,366 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 18:34:43,366 INFO L175 Difference]: Start difference. First operand has 330 places, 318 transitions, 5054 flow. Second operand 16 states and 864 transitions. [2022-11-18 18:34:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 359 transitions, 6036 flow [2022-11-18 18:34:43,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 359 transitions, 5713 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-11-18 18:34:43,485 INFO L231 Difference]: Finished difference. Result has 337 places, 320 transitions, 5069 flow [2022-11-18 18:34:43,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5069, PETRI_PLACES=337, PETRI_TRANSITIONS=320} [2022-11-18 18:34:43,486 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 261 predicate places. [2022-11-18 18:34:43,486 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 320 transitions, 5069 flow [2022-11-18 18:34:43,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:43,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:43,486 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] [2022-11-18 18:34:43,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 18:34:43,486 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1684303669, now seen corresponding path program 21 times [2022-11-18 18:34:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:43,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835550011] [2022-11-18 18:34:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:43,996 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 18:34:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:43,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835550011] [2022-11-18 18:34:43,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835550011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:43,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:43,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011089381] [2022-11-18 18:34:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:43,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:43,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:44,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 320 transitions, 5069 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:44,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:44,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:44,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:44,973 INFO L130 PetriNetUnfolder]: 289/1831 cut-off events. [2022-11-18 18:34:44,973 INFO L131 PetriNetUnfolder]: For 15674/15747 co-relation queries the response was YES. [2022-11-18 18:34:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 1831 events. 289/1831 cut-off events. For 15674/15747 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17772 event pairs, 32 based on Foata normal form. 45/1868 useless extension candidates. Maximal degree in co-relation 7745. Up to 252 conditions per place. [2022-11-18 18:34:44,992 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 181 selfloop transitions, 128 changer transitions 0/369 dead transitions. [2022-11-18 18:34:44,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 369 transitions, 6118 flow [2022-11-18 18:34:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:34:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:34:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 822 transitions. [2022-11-18 18:34:44,994 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7506849315068493 [2022-11-18 18:34:44,994 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 822 transitions. [2022-11-18 18:34:44,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 822 transitions. [2022-11-18 18:34:44,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:44,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 822 transitions. [2022-11-18 18:34:44,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.8) internal successors, (822), 15 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 18:34:44,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:44,998 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:44,999 INFO L175 Difference]: Start difference. First operand has 337 places, 320 transitions, 5069 flow. Second operand 15 states and 822 transitions. [2022-11-18 18:34:44,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 369 transitions, 6118 flow [2022-11-18 18:34:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 369 transitions, 5925 flow, removed 6 selfloop flow, removed 10 redundant places. [2022-11-18 18:34:45,115 INFO L231 Difference]: Finished difference. Result has 346 places, 327 transitions, 5352 flow [2022-11-18 18:34:45,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5352, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-11-18 18:34:45,116 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 270 predicate places. [2022-11-18 18:34:45,116 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 5352 flow [2022-11-18 18:34:45,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:45,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:45,117 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] [2022-11-18 18:34:45,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 18:34:45,117 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:45,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1643361633, now seen corresponding path program 22 times [2022-11-18 18:34:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:45,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898286175] [2022-11-18 18:34:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:45,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:45,527 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 18:34:45,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:45,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898286175] [2022-11-18 18:34:45,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898286175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:45,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:45,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:45,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292074126] [2022-11-18 18:34:45,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:45,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:45,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:45,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:45,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:45,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:45,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 5352 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:45,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:45,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:45,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:46,612 INFO L130 PetriNetUnfolder]: 310/2003 cut-off events. [2022-11-18 18:34:46,613 INFO L131 PetriNetUnfolder]: For 18598/18674 co-relation queries the response was YES. [2022-11-18 18:34:46,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8686 conditions, 2003 events. 310/2003 cut-off events. For 18598/18674 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20063 event pairs, 69 based on Foata normal form. 21/2013 useless extension candidates. Maximal degree in co-relation 8519. Up to 401 conditions per place. [2022-11-18 18:34:46,635 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 273 selfloop transitions, 53 changer transitions 0/386 dead transitions. [2022-11-18 18:34:46,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 386 transitions, 6663 flow [2022-11-18 18:34:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 623 transitions. [2022-11-18 18:34:46,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.775840597758406 [2022-11-18 18:34:46,637 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 623 transitions. [2022-11-18 18:34:46,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 623 transitions. [2022-11-18 18:34:46,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:46,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 623 transitions. [2022-11-18 18:34:46,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.63636363636363) internal successors, (623), 11 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 18:34:46,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:46,639 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:46,639 INFO L175 Difference]: Start difference. First operand has 346 places, 327 transitions, 5352 flow. Second operand 11 states and 623 transitions. [2022-11-18 18:34:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 386 transitions, 6663 flow [2022-11-18 18:34:46,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 386 transitions, 6396 flow, removed 45 selfloop flow, removed 8 redundant places. [2022-11-18 18:34:46,757 INFO L231 Difference]: Finished difference. Result has 352 places, 336 transitions, 5456 flow [2022-11-18 18:34:46,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5146, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5456, PETRI_PLACES=352, PETRI_TRANSITIONS=336} [2022-11-18 18:34:46,758 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 276 predicate places. [2022-11-18 18:34:46,758 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 336 transitions, 5456 flow [2022-11-18 18:34:46,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:46,759 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:46,759 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] [2022-11-18 18:34:46,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 18:34:46,759 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:46,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1081385977, now seen corresponding path program 23 times [2022-11-18 18:34:46,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:46,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838707160] [2022-11-18 18:34:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:46,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:47,149 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 18:34:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838707160] [2022-11-18 18:34:47,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838707160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:47,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:47,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854920064] [2022-11-18 18:34:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:47,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:47,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 336 transitions, 5456 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:47,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:47,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:47,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:48,251 INFO L130 PetriNetUnfolder]: 310/2005 cut-off events. [2022-11-18 18:34:48,251 INFO L131 PetriNetUnfolder]: For 17848/17924 co-relation queries the response was YES. [2022-11-18 18:34:48,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8623 conditions, 2005 events. 310/2005 cut-off events. For 17848/17924 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20101 event pairs, 71 based on Foata normal form. 24/2018 useless extension candidates. Maximal degree in co-relation 8452. Up to 401 conditions per place. [2022-11-18 18:34:48,281 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 258 selfloop transitions, 62 changer transitions 0/380 dead transitions. [2022-11-18 18:34:48,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 380 transitions, 6544 flow [2022-11-18 18:34:48,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 615 transitions. [2022-11-18 18:34:48,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7658779576587795 [2022-11-18 18:34:48,283 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 615 transitions. [2022-11-18 18:34:48,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 615 transitions. [2022-11-18 18:34:48,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:48,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 615 transitions. [2022-11-18 18:34:48,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.90909090909091) internal successors, (615), 11 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 18:34:48,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:48,289 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:48,289 INFO L175 Difference]: Start difference. First operand has 352 places, 336 transitions, 5456 flow. Second operand 11 states and 615 transitions. [2022-11-18 18:34:48,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 380 transitions, 6544 flow [2022-11-18 18:34:48,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 380 transitions, 6388 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-11-18 18:34:48,442 INFO L231 Difference]: Finished difference. Result has 359 places, 342 transitions, 5572 flow [2022-11-18 18:34:48,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5301, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5572, PETRI_PLACES=359, PETRI_TRANSITIONS=342} [2022-11-18 18:34:48,442 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 283 predicate places. [2022-11-18 18:34:48,442 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 342 transitions, 5572 flow [2022-11-18 18:34:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:48,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:48,443 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] [2022-11-18 18:34:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 18:34:48,443 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1924998837, now seen corresponding path program 24 times [2022-11-18 18:34:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931099980] [2022-11-18 18:34:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:48,935 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 18:34:48,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:48,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931099980] [2022-11-18 18:34:48,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931099980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:48,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:48,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:48,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830764698] [2022-11-18 18:34:48,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:48,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:48,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 342 transitions, 5572 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:48,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:48,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:48,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:50,219 INFO L130 PetriNetUnfolder]: 297/1938 cut-off events. [2022-11-18 18:34:50,220 INFO L131 PetriNetUnfolder]: For 17166/17239 co-relation queries the response was YES. [2022-11-18 18:34:50,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8370 conditions, 1938 events. 297/1938 cut-off events. For 17166/17239 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 19251 event pairs, 65 based on Foata normal form. 27/1957 useless extension candidates. Maximal degree in co-relation 8195. Up to 401 conditions per place. [2022-11-18 18:34:50,244 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 268 selfloop transitions, 56 changer transitions 0/384 dead transitions. [2022-11-18 18:34:50,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 384 transitions, 6556 flow [2022-11-18 18:34:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 620 transitions. [2022-11-18 18:34:50,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.772104607721046 [2022-11-18 18:34:50,246 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 620 transitions. [2022-11-18 18:34:50,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 620 transitions. [2022-11-18 18:34:50,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:50,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 620 transitions. [2022-11-18 18:34:50,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.36363636363637) internal successors, (620), 11 states have internal predecessors, (620), 0 states have call successors, (0), 0 states 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 18:34:50,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:50,250 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:50,250 INFO L175 Difference]: Start difference. First operand has 359 places, 342 transitions, 5572 flow. Second operand 11 states and 620 transitions. [2022-11-18 18:34:50,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 384 transitions, 6556 flow [2022-11-18 18:34:50,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 384 transitions, 6443 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:50,397 INFO L231 Difference]: Finished difference. Result has 366 places, 345 transitions, 5658 flow [2022-11-18 18:34:50,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5658, PETRI_PLACES=366, PETRI_TRANSITIONS=345} [2022-11-18 18:34:50,398 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 290 predicate places. [2022-11-18 18:34:50,398 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 345 transitions, 5658 flow [2022-11-18 18:34:50,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:50,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:50,398 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] [2022-11-18 18:34:50,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 18:34:50,399 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 354779151, now seen corresponding path program 25 times [2022-11-18 18:34:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:50,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904076554] [2022-11-18 18:34:50,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:50,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:50,779 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 18:34:50,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:50,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904076554] [2022-11-18 18:34:50,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904076554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:50,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:50,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:50,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50636379] [2022-11-18 18:34:50,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:50,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:50,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:50,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:50,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:50,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:50,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 345 transitions, 5658 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:50,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:50,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:50,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:51,824 INFO L130 PetriNetUnfolder]: 284/1863 cut-off events. [2022-11-18 18:34:51,824 INFO L131 PetriNetUnfolder]: For 16240/16312 co-relation queries the response was YES. [2022-11-18 18:34:51,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8107 conditions, 1863 events. 284/1863 cut-off events. For 16240/16312 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 18349 event pairs, 63 based on Foata normal form. 29/1886 useless extension candidates. Maximal degree in co-relation 7929. Up to 401 conditions per place. [2022-11-18 18:34:51,845 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 259 selfloop transitions, 60 changer transitions 0/379 dead transitions. [2022-11-18 18:34:51,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 379 transitions, 6484 flow [2022-11-18 18:34:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:34:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:34:51,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 618 transitions. [2022-11-18 18:34:51,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7696139476961394 [2022-11-18 18:34:51,847 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 618 transitions. [2022-11-18 18:34:51,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 618 transitions. [2022-11-18 18:34:51,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:51,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 618 transitions. [2022-11-18 18:34:51,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.18181818181818) internal successors, (618), 11 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 18:34:51,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:51,851 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:34:51,851 INFO L175 Difference]: Start difference. First operand has 366 places, 345 transitions, 5658 flow. Second operand 11 states and 618 transitions. [2022-11-18 18:34:51,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 379 transitions, 6484 flow [2022-11-18 18:34:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 379 transitions, 6376 flow, removed 7 selfloop flow, removed 9 redundant places. [2022-11-18 18:34:52,049 INFO L231 Difference]: Finished difference. Result has 369 places, 344 transitions, 5642 flow [2022-11-18 18:34:52,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5642, PETRI_PLACES=369, PETRI_TRANSITIONS=344} [2022-11-18 18:34:52,050 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 293 predicate places. [2022-11-18 18:34:52,050 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 344 transitions, 5642 flow [2022-11-18 18:34:52,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:52,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:52,051 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] [2022-11-18 18:34:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 18:34:52,051 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -884975625, now seen corresponding path program 26 times [2022-11-18 18:34:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:52,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226924891] [2022-11-18 18:34:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:52,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:52,395 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 18:34:52,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:52,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226924891] [2022-11-18 18:34:52,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226924891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:52,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:52,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:52,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052450348] [2022-11-18 18:34:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:52,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:52,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:52,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:52,398 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:52,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 344 transitions, 5642 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:52,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:52,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:52,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:53,543 INFO L130 PetriNetUnfolder]: 292/1946 cut-off events. [2022-11-18 18:34:53,543 INFO L131 PetriNetUnfolder]: For 16725/16801 co-relation queries the response was YES. [2022-11-18 18:34:53,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8425 conditions, 1946 events. 292/1946 cut-off events. For 16725/16801 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 19440 event pairs, 42 based on Foata normal form. 27/1967 useless extension candidates. Maximal degree in co-relation 8246. Up to 303 conditions per place. [2022-11-18 18:34:53,565 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 253 selfloop transitions, 101 changer transitions 0/414 dead transitions. [2022-11-18 18:34:53,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 414 transitions, 7011 flow [2022-11-18 18:34:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:34:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 18:34:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 836 transitions. [2022-11-18 18:34:53,568 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7634703196347032 [2022-11-18 18:34:53,568 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 836 transitions. [2022-11-18 18:34:53,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 836 transitions. [2022-11-18 18:34:53,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:53,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 836 transitions. [2022-11-18 18:34:53,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 55.733333333333334) internal successors, (836), 15 states have internal predecessors, (836), 0 states have call successors, (0), 0 states 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 18:34:53,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:53,573 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:34:53,573 INFO L175 Difference]: Start difference. First operand has 369 places, 344 transitions, 5642 flow. Second operand 15 states and 836 transitions. [2022-11-18 18:34:53,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 414 transitions, 7011 flow [2022-11-18 18:34:53,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 414 transitions, 6904 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-11-18 18:34:53,796 INFO L231 Difference]: Finished difference. Result has 384 places, 357 transitions, 6045 flow [2022-11-18 18:34:53,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6045, PETRI_PLACES=384, PETRI_TRANSITIONS=357} [2022-11-18 18:34:53,798 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 308 predicate places. [2022-11-18 18:34:53,798 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 357 transitions, 6045 flow [2022-11-18 18:34:53,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:53,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:53,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:53,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 18:34:53,799 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:53,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:53,800 INFO L85 PathProgramCache]: Analyzing trace with hash 897919359, now seen corresponding path program 27 times [2022-11-18 18:34:53,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:53,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082617730] [2022-11-18 18:34:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:53,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:54,235 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 18:34:54,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:54,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082617730] [2022-11-18 18:34:54,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082617730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:54,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:54,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:54,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10787895] [2022-11-18 18:34:54,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:54,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:54,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:54,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:54,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:54,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 357 transitions, 6045 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:54,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:54,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:54,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:55,559 INFO L130 PetriNetUnfolder]: 313/2082 cut-off events. [2022-11-18 18:34:55,560 INFO L131 PetriNetUnfolder]: For 19461/19540 co-relation queries the response was YES. [2022-11-18 18:34:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 2082 events. 313/2082 cut-off events. For 19461/19540 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 21126 event pairs, 38 based on Foata normal form. 32/2105 useless extension candidates. Maximal degree in co-relation 9014. Up to 303 conditions per place. [2022-11-18 18:34:55,581 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 230 selfloop transitions, 131 changer transitions 0/421 dead transitions. [2022-11-18 18:34:55,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 421 transitions, 7394 flow [2022-11-18 18:34:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:34:55,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:34:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 931 transitions. [2022-11-18 18:34:55,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.750201450443191 [2022-11-18 18:34:55,583 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 931 transitions. [2022-11-18 18:34:55,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 931 transitions. [2022-11-18 18:34:55,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:55,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 931 transitions. [2022-11-18 18:34:55,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.76470588235294) internal successors, (931), 17 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 18:34:55,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:55,587 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 73.0) internal successors, (1314), 18 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states 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 18:34:55,587 INFO L175 Difference]: Start difference. First operand has 384 places, 357 transitions, 6045 flow. Second operand 17 states and 931 transitions. [2022-11-18 18:34:55,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 421 transitions, 7394 flow [2022-11-18 18:34:55,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 421 transitions, 7209 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-11-18 18:34:55,735 INFO L231 Difference]: Finished difference. Result has 396 places, 369 transitions, 6446 flow [2022-11-18 18:34:55,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5888, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6446, PETRI_PLACES=396, PETRI_TRANSITIONS=369} [2022-11-18 18:34:55,737 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 320 predicate places. [2022-11-18 18:34:55,737 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 369 transitions, 6446 flow [2022-11-18 18:34:55,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:55,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:55,738 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] [2022-11-18 18:34:55,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 18:34:55,738 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:55,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -173935847, now seen corresponding path program 28 times [2022-11-18 18:34:55,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:55,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589752592] [2022-11-18 18:34:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:55,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:56,092 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 18:34:56,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:56,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589752592] [2022-11-18 18:34:56,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589752592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:56,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:56,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:56,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566914372] [2022-11-18 18:34:56,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:56,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:56,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:56,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:56,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:56,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:56,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 369 transitions, 6446 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:56,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:56,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:56,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:57,471 INFO L130 PetriNetUnfolder]: 343/2313 cut-off events. [2022-11-18 18:34:57,471 INFO L131 PetriNetUnfolder]: For 23388/23470 co-relation queries the response was YES. [2022-11-18 18:34:57,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2313 events. 343/2313 cut-off events. For 23388/23470 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 24167 event pairs, 46 based on Foata normal form. 21/2322 useless extension candidates. Maximal degree in co-relation 10096. Up to 303 conditions per place. [2022-11-18 18:34:57,494 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 286 selfloop transitions, 114 changer transitions 0/460 dead transitions. [2022-11-18 18:34:57,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 460 transitions, 8287 flow [2022-11-18 18:34:57,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:34:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 18:34:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 898 transitions. [2022-11-18 18:34:57,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7688356164383562 [2022-11-18 18:34:57,497 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 898 transitions. [2022-11-18 18:34:57,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 898 transitions. [2022-11-18 18:34:57,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:57,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 898 transitions. [2022-11-18 18:34:57,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 56.125) internal successors, (898), 16 states have internal predecessors, (898), 0 states have call successors, (0), 0 states 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 18:34:57,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 18:34:57,501 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 73.0) internal successors, (1241), 17 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 18:34:57,502 INFO L175 Difference]: Start difference. First operand has 396 places, 369 transitions, 6446 flow. Second operand 16 states and 898 transitions. [2022-11-18 18:34:57,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 460 transitions, 8287 flow [2022-11-18 18:34:57,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 460 transitions, 7921 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-11-18 18:34:57,755 INFO L231 Difference]: Finished difference. Result has 407 places, 386 transitions, 6772 flow [2022-11-18 18:34:57,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6772, PETRI_PLACES=407, PETRI_TRANSITIONS=386} [2022-11-18 18:34:57,757 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 331 predicate places. [2022-11-18 18:34:57,757 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 386 transitions, 6772 flow [2022-11-18 18:34:57,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:57,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:57,758 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] [2022-11-18 18:34:57,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 18:34:57,758 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:57,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -954566733, now seen corresponding path program 29 times [2022-11-18 18:34:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:57,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430234725] [2022-11-18 18:34:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:57,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:58,122 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 18:34:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430234725] [2022-11-18 18:34:58,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430234725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:58,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:58,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:34:58,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536340982] [2022-11-18 18:34:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:34:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:34:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:34:58,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:34:58,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 386 transitions, 6772 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:58,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:58,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:34:58,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:59,416 INFO L130 PetriNetUnfolder]: 347/2377 cut-off events. [2022-11-18 18:34:59,417 INFO L131 PetriNetUnfolder]: For 23625/23715 co-relation queries the response was YES. [2022-11-18 18:34:59,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10484 conditions, 2377 events. 347/2377 cut-off events. For 23625/23715 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 25144 event pairs, 69 based on Foata normal form. 32/2399 useless extension candidates. Maximal degree in co-relation 10290. Up to 399 conditions per place. [2022-11-18 18:34:59,443 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 62 changer transitions 0/440 dead transitions. [2022-11-18 18:34:59,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 440 transitions, 8146 flow [2022-11-18 18:34:59,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:34:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:34:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 672 transitions. [2022-11-18 18:34:59,445 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7671232876712328 [2022-11-18 18:34:59,445 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 672 transitions. [2022-11-18 18:34:59,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 672 transitions. [2022-11-18 18:34:59,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:59,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 672 transitions. [2022-11-18 18:34:59,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.0) internal successors, (672), 12 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 18:34:59,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 18:34:59,447 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 states 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 18:34:59,448 INFO L175 Difference]: Start difference. First operand has 407 places, 386 transitions, 6772 flow. Second operand 12 states and 672 transitions. [2022-11-18 18:34:59,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 440 transitions, 8146 flow [2022-11-18 18:34:59,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 440 transitions, 7875 flow, removed 30 selfloop flow, removed 8 redundant places. [2022-11-18 18:34:59,620 INFO L231 Difference]: Finished difference. Result has 416 places, 396 transitions, 6936 flow [2022-11-18 18:34:59,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6936, PETRI_PLACES=416, PETRI_TRANSITIONS=396} [2022-11-18 18:34:59,621 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 340 predicate places. [2022-11-18 18:34:59,622 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 396 transitions, 6936 flow [2022-11-18 18:34:59,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:34:59,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:59,622 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] [2022-11-18 18:34:59,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 18:34:59,622 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:34:59,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:59,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1306141661, now seen corresponding path program 30 times [2022-11-18 18:34:59,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:59,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165155767] [2022-11-18 18:34:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:59,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:00,031 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 18:35:00,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:00,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165155767] [2022-11-18 18:35:00,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165155767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:00,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:00,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:35:00,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171701453] [2022-11-18 18:35:00,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:00,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:35:00,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:00,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:35:00,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:00,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:00,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 396 transitions, 6936 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:00,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:00,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:00,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:01,565 INFO L130 PetriNetUnfolder]: 347/2380 cut-off events. [2022-11-18 18:35:01,565 INFO L131 PetriNetUnfolder]: For 23730/23818 co-relation queries the response was YES. [2022-11-18 18:35:01,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10539 conditions, 2380 events. 347/2380 cut-off events. For 23730/23818 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 25202 event pairs, 73 based on Foata normal form. 20/2390 useless extension candidates. Maximal degree in co-relation 10339. Up to 399 conditions per place. [2022-11-18 18:35:01,596 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 339 selfloop transitions, 47 changer transitions 0/446 dead transitions. [2022-11-18 18:35:01,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 446 transitions, 8210 flow [2022-11-18 18:35:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 622 transitions. [2022-11-18 18:35:01,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7745952677459527 [2022-11-18 18:35:01,598 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 622 transitions. [2022-11-18 18:35:01,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 622 transitions. [2022-11-18 18:35:01,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:01,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 622 transitions. [2022-11-18 18:35:01,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.54545454545455) internal successors, (622), 11 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 18:35:01,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:01,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:01,600 INFO L175 Difference]: Start difference. First operand has 416 places, 396 transitions, 6936 flow. Second operand 11 states and 622 transitions. [2022-11-18 18:35:01,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 446 transitions, 8210 flow [2022-11-18 18:35:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 446 transitions, 8096 flow, removed 33 selfloop flow, removed 5 redundant places. [2022-11-18 18:35:01,799 INFO L231 Difference]: Finished difference. Result has 425 places, 402 transitions, 7113 flow [2022-11-18 18:35:01,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6822, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7113, PETRI_PLACES=425, PETRI_TRANSITIONS=402} [2022-11-18 18:35:01,800 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 349 predicate places. [2022-11-18 18:35:01,800 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 402 transitions, 7113 flow [2022-11-18 18:35:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:01,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:01,800 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] [2022-11-18 18:35:01,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 18:35:01,801 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:01,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:01,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1983801265, now seen corresponding path program 31 times [2022-11-18 18:35:01,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:01,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723957563] [2022-11-18 18:35:01,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:01,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:02,140 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 18:35:02,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:02,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723957563] [2022-11-18 18:35:02,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723957563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:02,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:02,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:35:02,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171432191] [2022-11-18 18:35:02,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:02,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:35:02,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:35:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:35:02,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:02,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 402 transitions, 7113 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:35:02,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:02,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:02,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:03,239 INFO L130 PetriNetUnfolder]: 334/2306 cut-off events. [2022-11-18 18:35:03,239 INFO L131 PetriNetUnfolder]: For 23501/23586 co-relation queries the response was YES. [2022-11-18 18:35:03,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 2306 events. 334/2306 cut-off events. For 23501/23586 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24245 event pairs, 74 based on Foata normal form. 19/2317 useless extension candidates. Maximal degree in co-relation 10080. Up to 399 conditions per place. [2022-11-18 18:35:03,266 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 343 selfloop transitions, 44 changer transitions 0/447 dead transitions. [2022-11-18 18:35:03,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 447 transitions, 8252 flow [2022-11-18 18:35:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:03,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 625 transitions. [2022-11-18 18:35:03,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7783312577833126 [2022-11-18 18:35:03,268 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 625 transitions. [2022-11-18 18:35:03,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 625 transitions. [2022-11-18 18:35:03,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:03,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 625 transitions. [2022-11-18 18:35:03,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.81818181818182) internal successors, (625), 11 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 18:35:03,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:03,270 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:03,270 INFO L175 Difference]: Start difference. First operand has 425 places, 402 transitions, 7113 flow. Second operand 11 states and 625 transitions. [2022-11-18 18:35:03,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 447 transitions, 8252 flow [2022-11-18 18:35:03,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 447 transitions, 8095 flow, removed 54 selfloop flow, removed 6 redundant places. [2022-11-18 18:35:03,493 INFO L231 Difference]: Finished difference. Result has 432 places, 403 transitions, 7099 flow [2022-11-18 18:35:03,494 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6924, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7099, PETRI_PLACES=432, PETRI_TRANSITIONS=403} [2022-11-18 18:35:03,494 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 356 predicate places. [2022-11-18 18:35:03,495 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 403 transitions, 7099 flow [2022-11-18 18:35:03,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:35:03,495 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:03,495 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] [2022-11-18 18:35:03,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 18:35:03,495 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:03,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:03,496 INFO L85 PathProgramCache]: Analyzing trace with hash -818424777, now seen corresponding path program 32 times [2022-11-18 18:35:03,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:03,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738090478] [2022-11-18 18:35:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:03,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:03,865 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 18:35:03,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:03,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738090478] [2022-11-18 18:35:03,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738090478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:03,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:03,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:35:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489397764] [2022-11-18 18:35:03,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:03,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:35:03,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:03,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:35:03,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:03,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:03,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 403 transitions, 7099 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:03,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:03,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:03,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:05,172 INFO L130 PetriNetUnfolder]: 321/2227 cut-off events. [2022-11-18 18:35:05,172 INFO L131 PetriNetUnfolder]: For 21516/21602 co-relation queries the response was YES. [2022-11-18 18:35:05,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 2227 events. 321/2227 cut-off events. For 21516/21602 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23253 event pairs, 67 based on Foata normal form. 38/2259 useless extension candidates. Maximal degree in co-relation 9747. Up to 399 conditions per place. [2022-11-18 18:35:05,213 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 301 selfloop transitions, 73 changer transitions 0/434 dead transitions. [2022-11-18 18:35:05,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 434 transitions, 8013 flow [2022-11-18 18:35:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:05,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:05,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 617 transitions. [2022-11-18 18:35:05,217 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7683686176836861 [2022-11-18 18:35:05,217 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 617 transitions. [2022-11-18 18:35:05,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 617 transitions. [2022-11-18 18:35:05,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:05,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 617 transitions. [2022-11-18 18:35:05,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.09090909090909) internal successors, (617), 11 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 18:35:05,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:05,219 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:05,219 INFO L175 Difference]: Start difference. First operand has 432 places, 403 transitions, 7099 flow. Second operand 11 states and 617 transitions. [2022-11-18 18:35:05,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 434 transitions, 8013 flow [2022-11-18 18:35:05,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 434 transitions, 7934 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-18 18:35:05,429 INFO L231 Difference]: Finished difference. Result has 437 places, 403 transitions, 7159 flow [2022-11-18 18:35:05,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6919, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7159, PETRI_PLACES=437, PETRI_TRANSITIONS=403} [2022-11-18 18:35:05,430 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 361 predicate places. [2022-11-18 18:35:05,430 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 403 transitions, 7159 flow [2022-11-18 18:35:05,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:05,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:05,431 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:05,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 18:35:05,431 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash 392108323, now seen corresponding path program 33 times [2022-11-18 18:35:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:05,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24641981] [2022-11-18 18:35:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:05,929 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 18:35:05,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:05,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24641981] [2022-11-18 18:35:05,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24641981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:05,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:05,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:35:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629940937] [2022-11-18 18:35:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:35:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:35:05,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:05,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:05,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 403 transitions, 7159 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:05,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:05,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:05,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:07,311 INFO L130 PetriNetUnfolder]: 321/2243 cut-off events. [2022-11-18 18:35:07,311 INFO L131 PetriNetUnfolder]: For 22045/22129 co-relation queries the response was YES. [2022-11-18 18:35:07,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10082 conditions, 2243 events. 321/2243 cut-off events. For 22045/22129 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23446 event pairs, 61 based on Foata normal form. 21/2258 useless extension candidates. Maximal degree in co-relation 9872. Up to 399 conditions per place. [2022-11-18 18:35:07,343 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 338 selfloop transitions, 51 changer transitions 0/449 dead transitions. [2022-11-18 18:35:07,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 449 transitions, 8378 flow [2022-11-18 18:35:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 621 transitions. [2022-11-18 18:35:07,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7733499377334994 [2022-11-18 18:35:07,345 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 621 transitions. [2022-11-18 18:35:07,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 621 transitions. [2022-11-18 18:35:07,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:07,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 621 transitions. [2022-11-18 18:35:07,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.45454545454545) internal successors, (621), 11 states have internal predecessors, (621), 0 states have call successors, (0), 0 states 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 18:35:07,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:07,349 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:07,349 INFO L175 Difference]: Start difference. First operand has 437 places, 403 transitions, 7159 flow. Second operand 11 states and 621 transitions. [2022-11-18 18:35:07,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 449 transitions, 8378 flow [2022-11-18 18:35:07,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 449 transitions, 8244 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-18 18:35:07,573 INFO L231 Difference]: Finished difference. Result has 444 places, 409 transitions, 7330 flow [2022-11-18 18:35:07,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7033, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7330, PETRI_PLACES=444, PETRI_TRANSITIONS=409} [2022-11-18 18:35:07,574 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 368 predicate places. [2022-11-18 18:35:07,575 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 409 transitions, 7330 flow [2022-11-18 18:35:07,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:07,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:07,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 18:35:07,576 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:07,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash 109912489, now seen corresponding path program 34 times [2022-11-18 18:35:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:07,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399012430] [2022-11-18 18:35:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:08,089 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 18:35:08,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:08,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399012430] [2022-11-18 18:35:08,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399012430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:08,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:08,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:35:08,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824677130] [2022-11-18 18:35:08,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:35:08,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:35:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:35:08,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:08,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 409 transitions, 7330 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:35:08,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:08,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:08,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:09,178 INFO L130 PetriNetUnfolder]: 308/2169 cut-off events. [2022-11-18 18:35:09,178 INFO L131 PetriNetUnfolder]: For 21700/21781 co-relation queries the response was YES. [2022-11-18 18:35:09,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9791 conditions, 2169 events. 308/2169 cut-off events. For 21700/21781 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22532 event pairs, 61 based on Foata normal form. 22/2187 useless extension candidates. Maximal degree in co-relation 9577. Up to 399 conditions per place. [2022-11-18 18:35:09,207 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 340 selfloop transitions, 50 changer transitions 0/450 dead transitions. [2022-11-18 18:35:09,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 450 transitions, 8377 flow [2022-11-18 18:35:09,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 624 transitions. [2022-11-18 18:35:09,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7770859277708593 [2022-11-18 18:35:09,209 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 624 transitions. [2022-11-18 18:35:09,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 624 transitions. [2022-11-18 18:35:09,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:09,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 624 transitions. [2022-11-18 18:35:09,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.72727272727273) internal successors, (624), 11 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 18:35:09,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:09,212 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:09,212 INFO L175 Difference]: Start difference. First operand has 444 places, 409 transitions, 7330 flow. Second operand 11 states and 624 transitions. [2022-11-18 18:35:09,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 450 transitions, 8377 flow [2022-11-18 18:35:09,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 450 transitions, 8184 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-11-18 18:35:09,582 INFO L231 Difference]: Finished difference. Result has 451 places, 410 transitions, 7282 flow [2022-11-18 18:35:09,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7101, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7282, PETRI_PLACES=451, PETRI_TRANSITIONS=410} [2022-11-18 18:35:09,583 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 375 predicate places. [2022-11-18 18:35:09,583 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 410 transitions, 7282 flow [2022-11-18 18:35:09,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:35:09,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:09,584 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] [2022-11-18 18:35:09,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 18:35:09,584 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash -729461189, now seen corresponding path program 35 times [2022-11-18 18:35:09,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:09,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651549940] [2022-11-18 18:35:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:09,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:10,018 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 18:35:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:10,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651549940] [2022-11-18 18:35:10,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651549940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:10,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:10,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:35:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002076339] [2022-11-18 18:35:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:10,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:35:10,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:35:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:10,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:10,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 410 transitions, 7282 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:10,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:10,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:10,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:11,362 INFO L130 PetriNetUnfolder]: 308/2177 cut-off events. [2022-11-18 18:35:11,362 INFO L131 PetriNetUnfolder]: For 20818/20901 co-relation queries the response was YES. [2022-11-18 18:35:11,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9799 conditions, 2177 events. 308/2177 cut-off events. For 20818/20901 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 22601 event pairs, 50 based on Foata normal form. 33/2206 useless extension candidates. Maximal degree in co-relation 9582. Up to 507 conditions per place. [2022-11-18 18:35:11,397 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 307 selfloop transitions, 75 changer transitions 0/442 dead transitions. [2022-11-18 18:35:11,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 442 transitions, 8380 flow [2022-11-18 18:35:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 611 transitions. [2022-11-18 18:35:11,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608966376089664 [2022-11-18 18:35:11,399 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 611 transitions. [2022-11-18 18:35:11,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 611 transitions. [2022-11-18 18:35:11,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:11,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 611 transitions. [2022-11-18 18:35:11,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.54545454545455) internal successors, (611), 11 states have internal predecessors, (611), 0 states have call successors, (0), 0 states 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 18:35:11,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:11,401 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:11,401 INFO L175 Difference]: Start difference. First operand has 451 places, 410 transitions, 7282 flow. Second operand 11 states and 611 transitions. [2022-11-18 18:35:11,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 442 transitions, 8380 flow [2022-11-18 18:35:11,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 442 transitions, 8285 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-18 18:35:11,620 INFO L231 Difference]: Finished difference. Result has 459 places, 417 transitions, 7593 flow [2022-11-18 18:35:11,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7593, PETRI_PLACES=459, PETRI_TRANSITIONS=417} [2022-11-18 18:35:11,621 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 383 predicate places. [2022-11-18 18:35:11,622 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 417 transitions, 7593 flow [2022-11-18 18:35:11,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:11,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:11,622 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] [2022-11-18 18:35:11,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 18:35:11,623 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:11,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:11,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1277722933, now seen corresponding path program 36 times [2022-11-18 18:35:11,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:11,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068186658] [2022-11-18 18:35:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:11,966 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 18:35:11,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:11,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068186658] [2022-11-18 18:35:11,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068186658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:11,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:11,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:35:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948885440] [2022-11-18 18:35:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:35:11,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:35:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:35:11,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:11,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 417 transitions, 7593 flow. Second operand has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:35:11,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:11,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:13,181 INFO L130 PetriNetUnfolder]: 322/2310 cut-off events. [2022-11-18 18:35:13,182 INFO L131 PetriNetUnfolder]: For 23859/23945 co-relation queries the response was YES. [2022-11-18 18:35:13,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10428 conditions, 2310 events. 322/2310 cut-off events. For 23859/23945 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24424 event pairs, 58 based on Foata normal form. 31/2334 useless extension candidates. Maximal degree in co-relation 10206. Up to 507 conditions per place. [2022-11-18 18:35:13,249 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 336 selfloop transitions, 64 changer transitions 0/460 dead transitions. [2022-11-18 18:35:13,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 460 transitions, 8888 flow [2022-11-18 18:35:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 619 transitions. [2022-11-18 18:35:13,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7708592777085927 [2022-11-18 18:35:13,251 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 619 transitions. [2022-11-18 18:35:13,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 619 transitions. [2022-11-18 18:35:13,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:13,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 619 transitions. [2022-11-18 18:35:13,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 56.27272727272727) internal successors, (619), 11 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 18:35:13,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:13,254 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:13,254 INFO L175 Difference]: Start difference. First operand has 459 places, 417 transitions, 7593 flow. Second operand 11 states and 619 transitions. [2022-11-18 18:35:13,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 460 transitions, 8888 flow [2022-11-18 18:35:13,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 460 transitions, 8670 flow, removed 78 selfloop flow, removed 7 redundant places. [2022-11-18 18:35:13,567 INFO L231 Difference]: Finished difference. Result has 466 places, 425 transitions, 7806 flow [2022-11-18 18:35:13,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7437, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7806, PETRI_PLACES=466, PETRI_TRANSITIONS=425} [2022-11-18 18:35:13,568 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 390 predicate places. [2022-11-18 18:35:13,568 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 425 transitions, 7806 flow [2022-11-18 18:35:13,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 50.90909090909091) internal successors, (560), 11 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 18:35:13,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:13,568 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] [2022-11-18 18:35:13,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 18:35:13,569 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1456068015, now seen corresponding path program 37 times [2022-11-18 18:35:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:13,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86515983] [2022-11-18 18:35:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:13,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:13,964 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 18:35:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:13,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86515983] [2022-11-18 18:35:13,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86515983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:13,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:13,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:35:13,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516506070] [2022-11-18 18:35:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:35:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:35:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:13,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 73 [2022-11-18 18:35:13,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 425 transitions, 7806 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:13,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:13,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 73 [2022-11-18 18:35:13,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:15,333 INFO L130 PetriNetUnfolder]: 309/2246 cut-off events. [2022-11-18 18:35:15,333 INFO L131 PetriNetUnfolder]: For 22518/22607 co-relation queries the response was YES. [2022-11-18 18:35:15,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10103 conditions, 2246 events. 309/2246 cut-off events. For 22518/22607 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23641 event pairs, 53 based on Foata normal form. 38/2279 useless extension candidates. Maximal degree in co-relation 9880. Up to 507 conditions per place. [2022-11-18 18:35:15,361 INFO L137 encePairwiseOnDemand]: 60/73 looper letters, 318 selfloop transitions, 73 changer transitions 0/451 dead transitions. [2022-11-18 18:35:15,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 451 transitions, 8753 flow [2022-11-18 18:35:15,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:35:15,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:35:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 614 transitions. [2022-11-18 18:35:15,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7646326276463262 [2022-11-18 18:35:15,363 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 614 transitions. [2022-11-18 18:35:15,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 614 transitions. [2022-11-18 18:35:15,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:15,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 614 transitions. [2022-11-18 18:35:15,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 55.81818181818182) internal successors, (614), 11 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 18:35:15,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:15,366 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states 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 18:35:15,366 INFO L175 Difference]: Start difference. First operand has 466 places, 425 transitions, 7806 flow. Second operand 11 states and 614 transitions. [2022-11-18 18:35:15,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 451 transitions, 8753 flow [2022-11-18 18:35:15,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 451 transitions, 8615 flow, removed 16 selfloop flow, removed 8 redundant places. [2022-11-18 18:35:15,619 INFO L231 Difference]: Finished difference. Result has 471 places, 427 transitions, 7881 flow [2022-11-18 18:35:15,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7604, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7881, PETRI_PLACES=471, PETRI_TRANSITIONS=427} [2022-11-18 18:35:15,620 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 395 predicate places. [2022-11-18 18:35:15,620 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 427 transitions, 7881 flow [2022-11-18 18:35:15,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states 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 18:35:15,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:15,621 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] [2022-11-18 18:35:15,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 18:35:15,621 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:15,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash -460313033, now seen corresponding path program 38 times [2022-11-18 18:35:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:15,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362539331] [2022-11-18 18:35:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:15,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:16,029 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 18:35:16,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:16,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362539331] [2022-11-18 18:35:16,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362539331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:16,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:16,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:35:16,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510788707] [2022-11-18 18:35:16,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:16,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:35:16,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:16,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:35:16,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:35:16,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 73 [2022-11-18 18:35:16,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 427 transitions, 7881 flow. Second operand has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 18:35:16,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:16,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 73 [2022-11-18 18:35:16,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:17,411 INFO L130 PetriNetUnfolder]: 299/2167 cut-off events. [2022-11-18 18:35:17,411 INFO L131 PetriNetUnfolder]: For 21248/21330 co-relation queries the response was YES. [2022-11-18 18:35:17,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 2167 events. 299/2167 cut-off events. For 21248/21330 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 22585 event pairs, 50 based on Foata normal form. 27/2192 useless extension candidates. Maximal degree in co-relation 9624. Up to 507 conditions per place. [2022-11-18 18:35:17,437 INFO L137 encePairwiseOnDemand]: 59/73 looper letters, 326 selfloop transitions, 66 changer transitions 0/449 dead transitions. [2022-11-18 18:35:17,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 449 transitions, 8740 flow [2022-11-18 18:35:17,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:35:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:35:17,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 672 transitions. [2022-11-18 18:35:17,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.708113804004215 [2022-11-18 18:35:17,439 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 672 transitions. [2022-11-18 18:35:17,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 672 transitions. [2022-11-18 18:35:17,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:17,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 672 transitions. [2022-11-18 18:35:17,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.69230769230769) internal successors, (672), 13 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 18:35:17,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 18:35:17,442 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states 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 18:35:17,442 INFO L175 Difference]: Start difference. First operand has 471 places, 427 transitions, 7881 flow. Second operand 13 states and 672 transitions. [2022-11-18 18:35:17,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 449 transitions, 8740 flow [2022-11-18 18:35:17,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 449 transitions, 8565 flow, removed 30 selfloop flow, removed 7 redundant places. [2022-11-18 18:35:17,671 INFO L231 Difference]: Finished difference. Result has 477 places, 425 transitions, 7775 flow [2022-11-18 18:35:17,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7638, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7775, PETRI_PLACES=477, PETRI_TRANSITIONS=425} [2022-11-18 18:35:17,672 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 401 predicate places. [2022-11-18 18:35:17,673 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 425 transitions, 7775 flow [2022-11-18 18:35:17,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 47.84615384615385) internal successors, (622), 13 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 18:35:17,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:17,673 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] [2022-11-18 18:35:17,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 18:35:17,674 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:17,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1085029204, now seen corresponding path program 1 times [2022-11-18 18:35:17,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:17,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553195080] [2022-11-18 18:35:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:17,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:18,620 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 18:35:18,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:18,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553195080] [2022-11-18 18:35:18,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553195080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:18,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:18,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:18,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194265123] [2022-11-18 18:35:18,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:18,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:18,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:18,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:18,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:18,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:18,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 425 transitions, 7775 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:18,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:18,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:18,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:22,268 INFO L130 PetriNetUnfolder]: 726/2965 cut-off events. [2022-11-18 18:35:22,268 INFO L131 PetriNetUnfolder]: For 36964/36968 co-relation queries the response was YES. [2022-11-18 18:35:22,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15652 conditions, 2965 events. 726/2965 cut-off events. For 36964/36968 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 28574 event pairs, 117 based on Foata normal form. 3/2948 useless extension candidates. Maximal degree in co-relation 15418. Up to 814 conditions per place. [2022-11-18 18:35:22,315 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 523 selfloop transitions, 72 changer transitions 0/620 dead transitions. [2022-11-18 18:35:22,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 620 transitions, 11882 flow [2022-11-18 18:35:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:35:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 18:35:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 895 transitions. [2022-11-18 18:35:22,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.437866927592955 [2022-11-18 18:35:22,319 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 895 transitions. [2022-11-18 18:35:22,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 895 transitions. [2022-11-18 18:35:22,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:22,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 895 transitions. [2022-11-18 18:35:22,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 31.964285714285715) internal successors, (895), 28 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 18:35:22,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states 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 18:35:22,323 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 73.0) internal successors, (2117), 29 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states 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 18:35:22,323 INFO L175 Difference]: Start difference. First operand has 477 places, 425 transitions, 7775 flow. Second operand 28 states and 895 transitions. [2022-11-18 18:35:22,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 620 transitions, 11882 flow [2022-11-18 18:35:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 620 transitions, 11753 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-18 18:35:22,617 INFO L231 Difference]: Finished difference. Result has 506 places, 453 transitions, 8168 flow [2022-11-18 18:35:22,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8168, PETRI_PLACES=506, PETRI_TRANSITIONS=453} [2022-11-18 18:35:22,619 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 430 predicate places. [2022-11-18 18:35:22,619 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 453 transitions, 8168 flow [2022-11-18 18:35:22,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:22,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:22,620 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] [2022-11-18 18:35:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 18:35:22,620 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:22,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash 632861442, now seen corresponding path program 2 times [2022-11-18 18:35:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:22,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917848985] [2022-11-18 18:35:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:22,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:23,546 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 18:35:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917848985] [2022-11-18 18:35:23,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917848985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:23,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:23,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:23,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508814880] [2022-11-18 18:35:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:23,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:23,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:23,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:23,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:23,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:23,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 453 transitions, 8168 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:23,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:23,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:23,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:27,748 INFO L130 PetriNetUnfolder]: 725/3008 cut-off events. [2022-11-18 18:35:27,748 INFO L131 PetriNetUnfolder]: For 38873/38877 co-relation queries the response was YES. [2022-11-18 18:35:27,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 3008 events. 725/3008 cut-off events. For 38873/38877 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 29464 event pairs, 185 based on Foata normal form. 3/2991 useless extension candidates. Maximal degree in co-relation 16518. Up to 1139 conditions per place. [2022-11-18 18:35:27,806 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 487 selfloop transitions, 79 changer transitions 0/591 dead transitions. [2022-11-18 18:35:27,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 591 transitions, 11233 flow [2022-11-18 18:35:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:35:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 18:35:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 862 transitions. [2022-11-18 18:35:27,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43734145104008115 [2022-11-18 18:35:27,808 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 862 transitions. [2022-11-18 18:35:27,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 862 transitions. [2022-11-18 18:35:27,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:27,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 862 transitions. [2022-11-18 18:35:27,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 31.925925925925927) internal successors, (862), 27 states have internal predecessors, (862), 0 states have call successors, (0), 0 states 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 18:35:27,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 18:35:27,812 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 73.0) internal successors, (2044), 28 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states 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 18:35:27,812 INFO L175 Difference]: Start difference. First operand has 506 places, 453 transitions, 8168 flow. Second operand 27 states and 862 transitions. [2022-11-18 18:35:27,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 591 transitions, 11233 flow [2022-11-18 18:35:28,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 591 transitions, 11193 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-11-18 18:35:28,310 INFO L231 Difference]: Finished difference. Result has 534 places, 468 transitions, 8491 flow [2022-11-18 18:35:28,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8130, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8491, PETRI_PLACES=534, PETRI_TRANSITIONS=468} [2022-11-18 18:35:28,311 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 458 predicate places. [2022-11-18 18:35:28,311 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 468 transitions, 8491 flow [2022-11-18 18:35:28,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:28,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:28,312 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] [2022-11-18 18:35:28,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 18:35:28,312 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1413720348, now seen corresponding path program 3 times [2022-11-18 18:35:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:28,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084618241] [2022-11-18 18:35:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:29,186 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 18:35:29,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:29,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084618241] [2022-11-18 18:35:29,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084618241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:29,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:29,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791319147] [2022-11-18 18:35:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:29,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:29,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 468 transitions, 8491 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:29,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:29,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:34,110 INFO L130 PetriNetUnfolder]: 725/3005 cut-off events. [2022-11-18 18:35:34,110 INFO L131 PetriNetUnfolder]: For 41929/41933 co-relation queries the response was YES. [2022-11-18 18:35:34,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17496 conditions, 3005 events. 725/3005 cut-off events. For 41929/41933 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29185 event pairs, 125 based on Foata normal form. 3/2988 useless extension candidates. Maximal degree in co-relation 17234. Up to 832 conditions per place. [2022-11-18 18:35:34,218 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 525 selfloop transitions, 100 changer transitions 0/650 dead transitions. [2022-11-18 18:35:34,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 650 transitions, 12562 flow [2022-11-18 18:35:34,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:35:34,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 18:35:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1066 transitions. [2022-11-18 18:35:34,231 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42949234488315874 [2022-11-18 18:35:34,231 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1066 transitions. [2022-11-18 18:35:34,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1066 transitions. [2022-11-18 18:35:34,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:34,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1066 transitions. [2022-11-18 18:35:34,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 31.352941176470587) internal successors, (1066), 34 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states 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 18:35:34,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 18:35:34,238 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 18:35:34,238 INFO L175 Difference]: Start difference. First operand has 534 places, 468 transitions, 8491 flow. Second operand 34 states and 1066 transitions. [2022-11-18 18:35:34,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 650 transitions, 12562 flow [2022-11-18 18:35:34,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 650 transitions, 12478 flow, removed 7 selfloop flow, removed 11 redundant places. [2022-11-18 18:35:34,836 INFO L231 Difference]: Finished difference. Result has 563 places, 488 transitions, 9006 flow [2022-11-18 18:35:34,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8411, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=9006, PETRI_PLACES=563, PETRI_TRANSITIONS=488} [2022-11-18 18:35:34,840 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 487 predicate places. [2022-11-18 18:35:34,841 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 488 transitions, 9006 flow [2022-11-18 18:35:34,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:34,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:34,842 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] [2022-11-18 18:35:34,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-18 18:35:34,842 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:34,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1466061754, now seen corresponding path program 4 times [2022-11-18 18:35:34,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:34,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606988544] [2022-11-18 18:35:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:34,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:35,801 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 18:35:35,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:35,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606988544] [2022-11-18 18:35:35,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606988544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:35,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:35,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:35,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702497114] [2022-11-18 18:35:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:35,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:35,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:35,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:35,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 488 transitions, 9006 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:35,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:35,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:35,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:40,764 INFO L130 PetriNetUnfolder]: 725/3042 cut-off events. [2022-11-18 18:35:40,765 INFO L131 PetriNetUnfolder]: For 46058/46062 co-relation queries the response was YES. [2022-11-18 18:35:40,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 3042 events. 725/3042 cut-off events. For 46058/46062 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 29985 event pairs, 185 based on Foata normal form. 3/3025 useless extension candidates. Maximal degree in co-relation 18133. Up to 1123 conditions per place. [2022-11-18 18:35:40,841 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 488 selfloop transitions, 103 changer transitions 0/616 dead transitions. [2022-11-18 18:35:40,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 616 transitions, 12105 flow [2022-11-18 18:35:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 18:35:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 18:35:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1004 transitions. [2022-11-18 18:35:40,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2022-11-18 18:35:40,844 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1004 transitions. [2022-11-18 18:35:40,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1004 transitions. [2022-11-18 18:35:40,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:40,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1004 transitions. [2022-11-18 18:35:40,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.375) internal successors, (1004), 32 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states 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 18:35:40,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 18:35:40,852 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 18:35:40,852 INFO L175 Difference]: Start difference. First operand has 563 places, 488 transitions, 9006 flow. Second operand 32 states and 1004 transitions. [2022-11-18 18:35:40,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 616 transitions, 12105 flow [2022-11-18 18:35:41,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 616 transitions, 11952 flow, removed 30 selfloop flow, removed 17 redundant places. [2022-11-18 18:35:41,346 INFO L231 Difference]: Finished difference. Result has 582 places, 493 transitions, 9202 flow [2022-11-18 18:35:41,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9202, PETRI_PLACES=582, PETRI_TRANSITIONS=493} [2022-11-18 18:35:41,348 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 506 predicate places. [2022-11-18 18:35:41,348 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 493 transitions, 9202 flow [2022-11-18 18:35:41,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:41,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:41,349 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] [2022-11-18 18:35:41,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-18 18:35:41,349 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -994901186, now seen corresponding path program 5 times [2022-11-18 18:35:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:41,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867912870] [2022-11-18 18:35:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:42,211 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 18:35:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:42,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867912870] [2022-11-18 18:35:42,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867912870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:42,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:42,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:42,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251627354] [2022-11-18 18:35:42,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:42,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:42,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:42,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:42,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:42,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:42,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 493 transitions, 9202 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:42,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:42,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:42,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:46,765 INFO L130 PetriNetUnfolder]: 729/3048 cut-off events. [2022-11-18 18:35:46,765 INFO L131 PetriNetUnfolder]: For 48163/48167 co-relation queries the response was YES. [2022-11-18 18:35:46,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18705 conditions, 3048 events. 729/3048 cut-off events. For 48163/48167 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 29812 event pairs, 121 based on Foata normal form. 3/3031 useless extension candidates. Maximal degree in co-relation 18462. Up to 824 conditions per place. [2022-11-18 18:35:46,822 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 548 selfloop transitions, 105 changer transitions 0/678 dead transitions. [2022-11-18 18:35:46,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 678 transitions, 13515 flow [2022-11-18 18:35:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:35:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 18:35:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 978 transitions. [2022-11-18 18:35:46,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4321696862571807 [2022-11-18 18:35:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 978 transitions. [2022-11-18 18:35:46,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 978 transitions. [2022-11-18 18:35:46,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:46,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 978 transitions. [2022-11-18 18:35:46,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.548387096774192) internal successors, (978), 31 states have internal predecessors, (978), 0 states have call successors, (0), 0 states 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 18:35:46,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 18:35:46,829 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 18:35:46,829 INFO L175 Difference]: Start difference. First operand has 582 places, 493 transitions, 9202 flow. Second operand 31 states and 978 transitions. [2022-11-18 18:35:46,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 678 transitions, 13515 flow [2022-11-18 18:35:47,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 678 transitions, 13334 flow, removed 18 selfloop flow, removed 26 redundant places. [2022-11-18 18:35:47,431 INFO L231 Difference]: Finished difference. Result has 596 places, 511 transitions, 9658 flow [2022-11-18 18:35:47,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=9658, PETRI_PLACES=596, PETRI_TRANSITIONS=511} [2022-11-18 18:35:47,433 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 520 predicate places. [2022-11-18 18:35:47,433 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 511 transitions, 9658 flow [2022-11-18 18:35:47,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:47,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:47,434 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] [2022-11-18 18:35:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-18 18:35:47,434 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 246125894, now seen corresponding path program 6 times [2022-11-18 18:35:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:47,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033317719] [2022-11-18 18:35:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:47,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:48,336 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 18:35:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033317719] [2022-11-18 18:35:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033317719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:48,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001748666] [2022-11-18 18:35:48,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:48,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:48,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:48,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 511 transitions, 9658 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:48,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:48,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:35:52,974 INFO L130 PetriNetUnfolder]: 728/3060 cut-off events. [2022-11-18 18:35:52,974 INFO L131 PetriNetUnfolder]: For 51186/51190 co-relation queries the response was YES. [2022-11-18 18:35:53,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19401 conditions, 3060 events. 728/3060 cut-off events. For 51186/51190 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 29983 event pairs, 121 based on Foata normal form. 3/3043 useless extension candidates. Maximal degree in co-relation 19145. Up to 854 conditions per place. [2022-11-18 18:35:53,049 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 557 selfloop transitions, 102 changer transitions 0/684 dead transitions. [2022-11-18 18:35:53,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 684 transitions, 13714 flow [2022-11-18 18:35:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 18:35:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 18:35:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1008 transitions. [2022-11-18 18:35:53,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2022-11-18 18:35:53,052 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1008 transitions. [2022-11-18 18:35:53,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1008 transitions. [2022-11-18 18:35:53,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:35:53,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1008 transitions. [2022-11-18 18:35:53,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 31.5) internal successors, (1008), 32 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 18:35:53,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 18:35:53,056 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 18:35:53,056 INFO L175 Difference]: Start difference. First operand has 596 places, 511 transitions, 9658 flow. Second operand 32 states and 1008 transitions. [2022-11-18 18:35:53,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 684 transitions, 13714 flow [2022-11-18 18:35:53,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 684 transitions, 13580 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-11-18 18:35:53,521 INFO L231 Difference]: Finished difference. Result has 620 places, 521 transitions, 9973 flow [2022-11-18 18:35:53,521 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9528, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=9973, PETRI_PLACES=620, PETRI_TRANSITIONS=521} [2022-11-18 18:35:53,522 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 544 predicate places. [2022-11-18 18:35:53,522 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 521 transitions, 9973 flow [2022-11-18 18:35:53,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:53,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:35:53,523 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] [2022-11-18 18:35:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-18 18:35:53,523 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:35:53,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1609922464, now seen corresponding path program 7 times [2022-11-18 18:35:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405057312] [2022-11-18 18:35:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:54,319 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 18:35:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:54,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405057312] [2022-11-18 18:35:54,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405057312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:54,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:54,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:35:54,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110915509] [2022-11-18 18:35:54,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:54,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:35:54,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:35:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:35:54,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:35:54,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 521 transitions, 9973 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:35:54,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:35:54,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:35:54,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:00,228 INFO L130 PetriNetUnfolder]: 730/3097 cut-off events. [2022-11-18 18:36:00,228 INFO L131 PetriNetUnfolder]: For 54356/54360 co-relation queries the response was YES. [2022-11-18 18:36:00,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19903 conditions, 3097 events. 730/3097 cut-off events. For 54356/54360 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 30711 event pairs, 177 based on Foata normal form. 3/3080 useless extension candidates. Maximal degree in co-relation 19637. Up to 1079 conditions per place. [2022-11-18 18:36:00,280 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 489 selfloop transitions, 147 changer transitions 0/661 dead transitions. [2022-11-18 18:36:00,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 661 transitions, 13410 flow [2022-11-18 18:36:00,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:36:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 18:36:00,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1170 transitions. [2022-11-18 18:36:00,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42177361211247294 [2022-11-18 18:36:00,283 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1170 transitions. [2022-11-18 18:36:00,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1170 transitions. [2022-11-18 18:36:00,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:00,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1170 transitions. [2022-11-18 18:36:00,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.789473684210527) internal successors, (1170), 38 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states 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 18:36:00,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 18:36:00,290 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 18:36:00,290 INFO L175 Difference]: Start difference. First operand has 620 places, 521 transitions, 9973 flow. Second operand 38 states and 1170 transitions. [2022-11-18 18:36:00,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 661 transitions, 13410 flow [2022-11-18 18:36:00,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 633 places, 661 transitions, 13150 flow, removed 27 selfloop flow, removed 24 redundant places. [2022-11-18 18:36:00,811 INFO L231 Difference]: Finished difference. Result has 640 places, 532 transitions, 10313 flow [2022-11-18 18:36:00,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9723, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10313, PETRI_PLACES=640, PETRI_TRANSITIONS=532} [2022-11-18 18:36:00,813 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 564 predicate places. [2022-11-18 18:36:00,813 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 532 transitions, 10313 flow [2022-11-18 18:36:00,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:00,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:00,814 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] [2022-11-18 18:36:00,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-18 18:36:00,814 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:00,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:00,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2046666050, now seen corresponding path program 8 times [2022-11-18 18:36:00,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:00,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770216298] [2022-11-18 18:36:00,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:00,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:01,571 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 18:36:01,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770216298] [2022-11-18 18:36:01,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770216298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:01,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:01,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354090053] [2022-11-18 18:36:01,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:01,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:01,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 532 transitions, 10313 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:01,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:01,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:01,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:09,756 INFO L130 PetriNetUnfolder]: 730/3088 cut-off events. [2022-11-18 18:36:09,756 INFO L131 PetriNetUnfolder]: For 55188/55192 co-relation queries the response was YES. [2022-11-18 18:36:09,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20077 conditions, 3088 events. 730/3088 cut-off events. For 55188/55192 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 30583 event pairs, 72 based on Foata normal form. 8/3076 useless extension candidates. Maximal degree in co-relation 19805. Up to 877 conditions per place. [2022-11-18 18:36:09,826 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 501 selfloop transitions, 245 changer transitions 0/771 dead transitions. [2022-11-18 18:36:09,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 771 transitions, 15673 flow [2022-11-18 18:36:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-18 18:36:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-18 18:36:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 1672 transitions. [2022-11-18 18:36:09,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41643835616438357 [2022-11-18 18:36:09,828 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 1672 transitions. [2022-11-18 18:36:09,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 1672 transitions. [2022-11-18 18:36:09,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:09,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 1672 transitions. [2022-11-18 18:36:09,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 30.4) internal successors, (1672), 55 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states 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 18:36:09,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states 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 18:36:09,835 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 73.0) internal successors, (4088), 56 states have internal predecessors, (4088), 0 states have call successors, (0), 0 states 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 18:36:09,836 INFO L175 Difference]: Start difference. First operand has 640 places, 532 transitions, 10313 flow. Second operand 55 states and 1672 transitions. [2022-11-18 18:36:09,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 771 transitions, 15673 flow [2022-11-18 18:36:10,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 771 transitions, 15203 flow, removed 53 selfloop flow, removed 38 redundant places. [2022-11-18 18:36:10,425 INFO L231 Difference]: Finished difference. Result has 660 places, 571 transitions, 11143 flow [2022-11-18 18:36:10,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9940, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=11143, PETRI_PLACES=660, PETRI_TRANSITIONS=571} [2022-11-18 18:36:10,425 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 584 predicate places. [2022-11-18 18:36:10,425 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 571 transitions, 11143 flow [2022-11-18 18:36:10,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:10,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:10,426 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] [2022-11-18 18:36:10,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-18 18:36:10,426 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:10,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1809555833, now seen corresponding path program 1 times [2022-11-18 18:36:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:10,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100594147] [2022-11-18 18:36:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:11,286 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 18:36:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100594147] [2022-11-18 18:36:11,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100594147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:11,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:11,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:11,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416083439] [2022-11-18 18:36:11,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:11,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:11,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 571 transitions, 11143 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:11,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:11,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:11,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:16,610 INFO L130 PetriNetUnfolder]: 728/3085 cut-off events. [2022-11-18 18:36:16,610 INFO L131 PetriNetUnfolder]: For 56244/56248 co-relation queries the response was YES. [2022-11-18 18:36:16,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20347 conditions, 3085 events. 728/3085 cut-off events. For 56244/56248 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 30577 event pairs, 187 based on Foata normal form. 5/3070 useless extension candidates. Maximal degree in co-relation 20078. Up to 1085 conditions per place. [2022-11-18 18:36:16,670 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 526 selfloop transitions, 149 changer transitions 0/700 dead transitions. [2022-11-18 18:36:16,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 700 transitions, 14394 flow [2022-11-18 18:36:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:36:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:36:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1094 transitions. [2022-11-18 18:36:16,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42818003913894326 [2022-11-18 18:36:16,673 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1094 transitions. [2022-11-18 18:36:16,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1094 transitions. [2022-11-18 18:36:16,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:16,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1094 transitions. [2022-11-18 18:36:16,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 31.257142857142856) internal successors, (1094), 35 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states 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 18:36:16,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states 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 18:36:16,678 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states 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 18:36:16,678 INFO L175 Difference]: Start difference. First operand has 660 places, 571 transitions, 11143 flow. Second operand 35 states and 1094 transitions. [2022-11-18 18:36:16,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 700 transitions, 14394 flow [2022-11-18 18:36:17,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 700 transitions, 12860 flow, removed 68 selfloop flow, removed 49 redundant places. [2022-11-18 18:36:17,164 INFO L231 Difference]: Finished difference. Result has 653 places, 583 transitions, 10189 flow [2022-11-18 18:36:17,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9692, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=10189, PETRI_PLACES=653, PETRI_TRANSITIONS=583} [2022-11-18 18:36:17,165 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 577 predicate places. [2022-11-18 18:36:17,165 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 583 transitions, 10189 flow [2022-11-18 18:36:17,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:17,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:17,166 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] [2022-11-18 18:36:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-18 18:36:17,166 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:17,166 INFO L85 PathProgramCache]: Analyzing trace with hash 453672061, now seen corresponding path program 2 times [2022-11-18 18:36:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:17,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854374252] [2022-11-18 18:36:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:17,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:17,996 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 18:36:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:17,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854374252] [2022-11-18 18:36:17,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854374252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:17,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:17,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979680293] [2022-11-18 18:36:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:17,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:18,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 583 transitions, 10189 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:18,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:18,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:18,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:24,089 INFO L130 PetriNetUnfolder]: 737/3139 cut-off events. [2022-11-18 18:36:24,089 INFO L131 PetriNetUnfolder]: For 49534/49536 co-relation queries the response was YES. [2022-11-18 18:36:24,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 3139 events. 737/3139 cut-off events. For 49534/49536 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 31164 event pairs, 189 based on Foata normal form. 5/3123 useless extension candidates. Maximal degree in co-relation 19842. Up to 1102 conditions per place. [2022-11-18 18:36:24,188 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 176 changer transitions 0/746 dead transitions. [2022-11-18 18:36:24,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 746 transitions, 13914 flow [2022-11-18 18:36:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 18:36:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 18:36:24,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1249 transitions. [2022-11-18 18:36:24,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42773972602739724 [2022-11-18 18:36:24,192 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1249 transitions. [2022-11-18 18:36:24,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1249 transitions. [2022-11-18 18:36:24,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:24,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1249 transitions. [2022-11-18 18:36:24,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 31.225) internal successors, (1249), 40 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 18:36:24,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states 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 18:36:24,200 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 73.0) internal successors, (2993), 41 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states 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 18:36:24,200 INFO L175 Difference]: Start difference. First operand has 653 places, 583 transitions, 10189 flow. Second operand 40 states and 1249 transitions. [2022-11-18 18:36:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 746 transitions, 13914 flow [2022-11-18 18:36:24,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 746 transitions, 13594 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-11-18 18:36:24,713 INFO L231 Difference]: Finished difference. Result has 678 places, 614 transitions, 10809 flow [2022-11-18 18:36:24,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9907, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=10809, PETRI_PLACES=678, PETRI_TRANSITIONS=614} [2022-11-18 18:36:24,715 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 602 predicate places. [2022-11-18 18:36:24,715 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 614 transitions, 10809 flow [2022-11-18 18:36:24,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:24,715 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:24,716 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] [2022-11-18 18:36:24,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-18 18:36:24,716 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:24,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1774231985, now seen corresponding path program 3 times [2022-11-18 18:36:24,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:24,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699504390] [2022-11-18 18:36:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:25,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699504390] [2022-11-18 18:36:25,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699504390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:25,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:25,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798626575] [2022-11-18 18:36:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:25,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:25,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:25,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:25,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 614 transitions, 10809 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:25,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:25,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:25,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:31,359 INFO L130 PetriNetUnfolder]: 735/3142 cut-off events. [2022-11-18 18:36:31,360 INFO L131 PetriNetUnfolder]: For 54207/54209 co-relation queries the response was YES. [2022-11-18 18:36:31,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20874 conditions, 3142 events. 735/3142 cut-off events. For 54207/54209 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 31213 event pairs, 188 based on Foata normal form. 5/3126 useless extension candidates. Maximal degree in co-relation 20615. Up to 1099 conditions per place. [2022-11-18 18:36:31,444 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 560 selfloop transitions, 172 changer transitions 0/757 dead transitions. [2022-11-18 18:36:31,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 757 transitions, 14246 flow [2022-11-18 18:36:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 18:36:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 18:36:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1227 transitions. [2022-11-18 18:36:31,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4309799789251844 [2022-11-18 18:36:31,447 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1227 transitions. [2022-11-18 18:36:31,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1227 transitions. [2022-11-18 18:36:31,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:31,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1227 transitions. [2022-11-18 18:36:31,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 31.46153846153846) internal successors, (1227), 39 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 18:36:31,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:36:31,450 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:36:31,450 INFO L175 Difference]: Start difference. First operand has 678 places, 614 transitions, 10809 flow. Second operand 39 states and 1227 transitions. [2022-11-18 18:36:31,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 757 transitions, 14246 flow [2022-11-18 18:36:31,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 757 transitions, 14089 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-11-18 18:36:31,974 INFO L231 Difference]: Finished difference. Result has 717 places, 630 transitions, 11347 flow [2022-11-18 18:36:31,975 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10653, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11347, PETRI_PLACES=717, PETRI_TRANSITIONS=630} [2022-11-18 18:36:31,975 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 641 predicate places. [2022-11-18 18:36:31,975 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 630 transitions, 11347 flow [2022-11-18 18:36:31,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:31,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:31,976 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] [2022-11-18 18:36:31,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-18 18:36:31,976 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:31,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:31,976 INFO L85 PathProgramCache]: Analyzing trace with hash -733061095, now seen corresponding path program 4 times [2022-11-18 18:36:31,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:31,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084086307] [2022-11-18 18:36:31,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:31,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:32,752 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 18:36:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:32,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084086307] [2022-11-18 18:36:32,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084086307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:32,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:32,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892589419] [2022-11-18 18:36:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:32,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:32,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:32,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:32,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:32,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 630 transitions, 11347 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:32,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:32,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:32,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:40,963 INFO L130 PetriNetUnfolder]: 744/3146 cut-off events. [2022-11-18 18:36:40,963 INFO L131 PetriNetUnfolder]: For 61765/61767 co-relation queries the response was YES. [2022-11-18 18:36:41,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22047 conditions, 3146 events. 744/3146 cut-off events. For 61765/61767 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 31014 event pairs, 125 based on Foata normal form. 5/3129 useless extension candidates. Maximal degree in co-relation 21777. Up to 823 conditions per place. [2022-11-18 18:36:41,014 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 574 selfloop transitions, 234 changer transitions 0/833 dead transitions. [2022-11-18 18:36:41,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 833 transitions, 15938 flow [2022-11-18 18:36:41,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-18 18:36:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-18 18:36:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1917 transitions. [2022-11-18 18:36:41,018 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4103167808219178 [2022-11-18 18:36:41,019 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1917 transitions. [2022-11-18 18:36:41,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1917 transitions. [2022-11-18 18:36:41,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:41,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1917 transitions. [2022-11-18 18:36:41,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.953125) internal successors, (1917), 64 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:36:41,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states 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 18:36:41,031 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states 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 18:36:41,031 INFO L175 Difference]: Start difference. First operand has 717 places, 630 transitions, 11347 flow. Second operand 64 states and 1917 transitions. [2022-11-18 18:36:41,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 833 transitions, 15938 flow [2022-11-18 18:36:41,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 833 transitions, 15634 flow, removed 31 selfloop flow, removed 23 redundant places. [2022-11-18 18:36:41,878 INFO L231 Difference]: Finished difference. Result has 772 places, 667 transitions, 12190 flow [2022-11-18 18:36:41,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11053, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=12190, PETRI_PLACES=772, PETRI_TRANSITIONS=667} [2022-11-18 18:36:41,878 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 696 predicate places. [2022-11-18 18:36:41,878 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 667 transitions, 12190 flow [2022-11-18 18:36:41,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:41,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:41,879 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] [2022-11-18 18:36:41,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-18 18:36:41,879 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:41,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1273542449, now seen corresponding path program 5 times [2022-11-18 18:36:41,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:41,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344890963] [2022-11-18 18:36:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:41,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:42,733 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 18:36:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344890963] [2022-11-18 18:36:42,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344890963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:42,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:42,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866878184] [2022-11-18 18:36:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:42,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:42,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 772 places, 667 transitions, 12190 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:42,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:42,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:42,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:51,114 INFO L130 PetriNetUnfolder]: 742/3174 cut-off events. [2022-11-18 18:36:51,115 INFO L131 PetriNetUnfolder]: For 71633/71635 co-relation queries the response was YES. [2022-11-18 18:36:51,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23321 conditions, 3174 events. 742/3174 cut-off events. For 71633/71635 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 31679 event pairs, 181 based on Foata normal form. 5/3157 useless extension candidates. Maximal degree in co-relation 23036. Up to 1035 conditions per place. [2022-11-18 18:36:51,274 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 545 selfloop transitions, 237 changer transitions 0/807 dead transitions. [2022-11-18 18:36:51,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 807 transitions, 15857 flow [2022-11-18 18:36:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 18:36:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-18 18:36:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1691 transitions. [2022-11-18 18:36:51,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41364970645792565 [2022-11-18 18:36:51,278 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1691 transitions. [2022-11-18 18:36:51,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1691 transitions. [2022-11-18 18:36:51,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:51,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1691 transitions. [2022-11-18 18:36:51,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.196428571428573) internal successors, (1691), 56 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states 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 18:36:51,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states 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 18:36:51,285 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states 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 18:36:51,285 INFO L175 Difference]: Start difference. First operand has 772 places, 667 transitions, 12190 flow. Second operand 56 states and 1691 transitions. [2022-11-18 18:36:51,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 807 transitions, 15857 flow [2022-11-18 18:36:52,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 807 transitions, 15457 flow, removed 62 selfloop flow, removed 35 redundant places. [2022-11-18 18:36:52,586 INFO L231 Difference]: Finished difference. Result has 800 places, 682 transitions, 12736 flow [2022-11-18 18:36:52,587 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11792, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=12736, PETRI_PLACES=800, PETRI_TRANSITIONS=682} [2022-11-18 18:36:52,587 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 724 predicate places. [2022-11-18 18:36:52,587 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 682 transitions, 12736 flow [2022-11-18 18:36:52,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:52,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:52,588 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] [2022-11-18 18:36:52,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-18 18:36:52,588 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:52,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1872077933, now seen corresponding path program 6 times [2022-11-18 18:36:52,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:52,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626380759] [2022-11-18 18:36:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:52,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:53,450 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 18:36:53,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:53,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626380759] [2022-11-18 18:36:53,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626380759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:36:53,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:36:53,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:36:53,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581470256] [2022-11-18 18:36:53,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:36:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:36:53,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:53,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:36:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:36:53,453 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:36:53,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 682 transitions, 12736 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:53,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:36:53,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:36:53,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:36:58,655 INFO L130 PetriNetUnfolder]: 751/3206 cut-off events. [2022-11-18 18:36:58,655 INFO L131 PetriNetUnfolder]: For 78958/78960 co-relation queries the response was YES. [2022-11-18 18:36:58,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24257 conditions, 3206 events. 751/3206 cut-off events. For 78958/78960 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 31910 event pairs, 106 based on Foata normal form. 5/3188 useless extension candidates. Maximal degree in co-relation 23968. Up to 927 conditions per place. [2022-11-18 18:36:58,789 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 654 selfloop transitions, 197 changer transitions 0/876 dead transitions. [2022-11-18 18:36:58,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 876 transitions, 17652 flow [2022-11-18 18:36:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:36:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 18:36:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1119 transitions. [2022-11-18 18:36:58,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2022-11-18 18:36:58,792 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1119 transitions. [2022-11-18 18:36:58,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1119 transitions. [2022-11-18 18:36:58,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:36:58,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1119 transitions. [2022-11-18 18:36:58,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 31.083333333333332) internal successors, (1119), 36 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states 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 18:36:58,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states 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 18:36:58,798 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 73.0) internal successors, (2701), 37 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states 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 18:36:58,798 INFO L175 Difference]: Start difference. First operand has 800 places, 682 transitions, 12736 flow. Second operand 36 states and 1119 transitions. [2022-11-18 18:36:58,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 876 transitions, 17652 flow [2022-11-18 18:36:59,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 789 places, 876 transitions, 17190 flow, removed 57 selfloop flow, removed 46 redundant places. [2022-11-18 18:36:59,747 INFO L231 Difference]: Finished difference. Result has 808 places, 719 transitions, 13678 flow [2022-11-18 18:36:59,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12328, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=13678, PETRI_PLACES=808, PETRI_TRANSITIONS=719} [2022-11-18 18:36:59,748 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 732 predicate places. [2022-11-18 18:36:59,748 INFO L495 AbstractCegarLoop]: Abstraction has has 808 places, 719 transitions, 13678 flow [2022-11-18 18:36:59,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:36:59,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:36:59,749 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] [2022-11-18 18:36:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-18 18:36:59,749 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:36:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash 71690769, now seen corresponding path program 7 times [2022-11-18 18:36:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:59,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781531563] [2022-11-18 18:36:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:59,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:59,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:00,525 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 18:37:00,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:00,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781531563] [2022-11-18 18:37:00,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781531563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:00,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:00,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:00,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171737363] [2022-11-18 18:37:00,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:00,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:00,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:00,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 719 transitions, 13678 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:00,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:00,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:00,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:05,938 INFO L130 PetriNetUnfolder]: 765/3299 cut-off events. [2022-11-18 18:37:05,938 INFO L131 PetriNetUnfolder]: For 90315/90317 co-relation queries the response was YES. [2022-11-18 18:37:05,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 3299 events. 765/3299 cut-off events. For 90315/90317 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 33069 event pairs, 104 based on Foata normal form. 5/3280 useless extension candidates. Maximal degree in co-relation 25594. Up to 926 conditions per place. [2022-11-18 18:37:05,996 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 226 changer transitions 0/912 dead transitions. [2022-11-18 18:37:05,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 912 transitions, 18675 flow [2022-11-18 18:37:05,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 18:37:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 18:37:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1208 transitions. [2022-11-18 18:37:05,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42430628731998593 [2022-11-18 18:37:05,998 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1208 transitions. [2022-11-18 18:37:05,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1208 transitions. [2022-11-18 18:37:05,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:05,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1208 transitions. [2022-11-18 18:37:06,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.974358974358974) internal successors, (1208), 39 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states 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 18:37:06,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:37:06,004 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:37:06,004 INFO L175 Difference]: Start difference. First operand has 808 places, 719 transitions, 13678 flow. Second operand 39 states and 1208 transitions. [2022-11-18 18:37:06,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 912 transitions, 18675 flow [2022-11-18 18:37:07,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 912 transitions, 18407 flow, removed 81 selfloop flow, removed 10 redundant places. [2022-11-18 18:37:07,106 INFO L231 Difference]: Finished difference. Result has 852 places, 751 transitions, 14891 flow [2022-11-18 18:37:07,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13450, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14891, PETRI_PLACES=852, PETRI_TRANSITIONS=751} [2022-11-18 18:37:07,107 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 776 predicate places. [2022-11-18 18:37:07,108 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 751 transitions, 14891 flow [2022-11-18 18:37:07,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:07,108 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:07,108 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] [2022-11-18 18:37:07,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-18 18:37:07,109 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:37:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash -900938735, now seen corresponding path program 8 times [2022-11-18 18:37:07,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:07,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258038290] [2022-11-18 18:37:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:07,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:07,832 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 18:37:07,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258038290] [2022-11-18 18:37:07,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258038290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:07,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:07,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:07,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527237240] [2022-11-18 18:37:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:07,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:07,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 751 transitions, 14891 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:07,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:07,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:07,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:14,123 INFO L130 PetriNetUnfolder]: 775/3344 cut-off events. [2022-11-18 18:37:14,123 INFO L131 PetriNetUnfolder]: For 102605/102607 co-relation queries the response was YES. [2022-11-18 18:37:14,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27575 conditions, 3344 events. 775/3344 cut-off events. For 102605/102607 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 33681 event pairs, 104 based on Foata normal form. 5/3324 useless extension candidates. Maximal degree in co-relation 27257. Up to 923 conditions per place. [2022-11-18 18:37:14,296 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 661 selfloop transitions, 249 changer transitions 0/935 dead transitions. [2022-11-18 18:37:14,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 893 places, 935 transitions, 19810 flow [2022-11-18 18:37:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 18:37:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-18 18:37:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1287 transitions. [2022-11-18 18:37:14,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4197651663405088 [2022-11-18 18:37:14,299 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1287 transitions. [2022-11-18 18:37:14,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1287 transitions. [2022-11-18 18:37:14,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:14,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1287 transitions. [2022-11-18 18:37:14,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 30.642857142857142) internal successors, (1287), 42 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states 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 18:37:14,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states 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 18:37:14,305 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 73.0) internal successors, (3139), 43 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states 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 18:37:14,305 INFO L175 Difference]: Start difference. First operand has 852 places, 751 transitions, 14891 flow. Second operand 42 states and 1287 transitions. [2022-11-18 18:37:14,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 893 places, 935 transitions, 19810 flow [2022-11-18 18:37:15,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 935 transitions, 19524 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-11-18 18:37:15,828 INFO L231 Difference]: Finished difference. Result has 890 places, 777 transitions, 16020 flow [2022-11-18 18:37:15,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14627, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16020, PETRI_PLACES=890, PETRI_TRANSITIONS=777} [2022-11-18 18:37:15,830 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 814 predicate places. [2022-11-18 18:37:15,830 INFO L495 AbstractCegarLoop]: Abstraction has has 890 places, 777 transitions, 16020 flow [2022-11-18 18:37:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:15,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:15,831 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] [2022-11-18 18:37:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-18 18:37:15,831 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:37:15,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1931636571, now seen corresponding path program 9 times [2022-11-18 18:37:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:15,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656638958] [2022-11-18 18:37:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:16,725 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 18:37:16,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656638958] [2022-11-18 18:37:16,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656638958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:16,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:16,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:16,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20592927] [2022-11-18 18:37:16,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:16,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:16,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:16,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:16,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 777 transitions, 16020 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:16,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:16,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:16,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:22,608 INFO L130 PetriNetUnfolder]: 787/3392 cut-off events. [2022-11-18 18:37:22,609 INFO L131 PetriNetUnfolder]: For 118679/118681 co-relation queries the response was YES. [2022-11-18 18:37:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29278 conditions, 3392 events. 787/3392 cut-off events. For 118679/118681 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 34307 event pairs, 104 based on Foata normal form. 5/3371 useless extension candidates. Maximal degree in co-relation 28947. Up to 916 conditions per place. [2022-11-18 18:37:22,906 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 663 selfloop transitions, 272 changer transitions 0/960 dead transitions. [2022-11-18 18:37:22,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 960 transitions, 21118 flow [2022-11-18 18:37:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 18:37:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 18:37:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1317 transitions. [2022-11-18 18:37:22,912 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4195603695444409 [2022-11-18 18:37:22,912 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1317 transitions. [2022-11-18 18:37:22,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1317 transitions. [2022-11-18 18:37:22,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:22,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1317 transitions. [2022-11-18 18:37:22,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.627906976744185) internal successors, (1317), 43 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states 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 18:37:22,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states 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 18:37:22,918 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states 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 18:37:22,918 INFO L175 Difference]: Start difference. First operand has 890 places, 777 transitions, 16020 flow. Second operand 43 states and 1317 transitions. [2022-11-18 18:37:22,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 960 transitions, 21118 flow [2022-11-18 18:37:24,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 960 transitions, 20668 flow, removed 91 selfloop flow, removed 21 redundant places. [2022-11-18 18:37:24,366 INFO L231 Difference]: Finished difference. Result has 926 places, 802 transitions, 17197 flow [2022-11-18 18:37:24,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15610, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=17197, PETRI_PLACES=926, PETRI_TRANSITIONS=802} [2022-11-18 18:37:24,368 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 850 predicate places. [2022-11-18 18:37:24,368 INFO L495 AbstractCegarLoop]: Abstraction has has 926 places, 802 transitions, 17197 flow [2022-11-18 18:37:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:24,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:24,368 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] [2022-11-18 18:37:24,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-18 18:37:24,369 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:37:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:24,369 INFO L85 PathProgramCache]: Analyzing trace with hash -839170485, now seen corresponding path program 10 times [2022-11-18 18:37:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:24,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111960214] [2022-11-18 18:37:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:25,177 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 18:37:25,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:25,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111960214] [2022-11-18 18:37:25,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111960214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:25,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:25,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655111501] [2022-11-18 18:37:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:25,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:25,179 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:25,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 926 places, 802 transitions, 17197 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:25,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:25,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:25,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:31,181 INFO L130 PetriNetUnfolder]: 801/3471 cut-off events. [2022-11-18 18:37:31,181 INFO L131 PetriNetUnfolder]: For 133335/133337 co-relation queries the response was YES. [2022-11-18 18:37:31,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 3471 events. 801/3471 cut-off events. For 133335/133337 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35320 event pairs, 108 based on Foata normal form. 5/3449 useless extension candidates. Maximal degree in co-relation 30506. Up to 912 conditions per place. [2022-11-18 18:37:31,274 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 679 selfloop transitions, 293 changer transitions 0/997 dead transitions. [2022-11-18 18:37:31,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 997 transitions, 22652 flow [2022-11-18 18:37:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 18:37:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 18:37:31,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-11-18 18:37:31,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-11-18 18:37:31,277 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-11-18 18:37:31,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-11-18 18:37:31,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:31,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-11-18 18:37:31,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states 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 18:37:31,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:37:31,280 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:37:31,280 INFO L175 Difference]: Start difference. First operand has 926 places, 802 transitions, 17197 flow. Second operand 39 states and 1199 transitions. [2022-11-18 18:37:31,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 997 transitions, 22652 flow [2022-11-18 18:37:32,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 997 transitions, 22199 flow, removed 86 selfloop flow, removed 27 redundant places. [2022-11-18 18:37:32,985 INFO L231 Difference]: Finished difference. Result has 952 places, 836 transitions, 18569 flow [2022-11-18 18:37:32,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16788, PETRI_DIFFERENCE_MINUEND_PLACES=899, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=18569, PETRI_PLACES=952, PETRI_TRANSITIONS=836} [2022-11-18 18:37:32,986 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 876 predicate places. [2022-11-18 18:37:32,987 INFO L495 AbstractCegarLoop]: Abstraction has has 952 places, 836 transitions, 18569 flow [2022-11-18 18:37:32,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:32,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:32,987 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] [2022-11-18 18:37:32,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-18 18:37:32,987 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:37:32,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:32,988 INFO L85 PathProgramCache]: Analyzing trace with hash -672298257, now seen corresponding path program 11 times [2022-11-18 18:37:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:32,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673396300] [2022-11-18 18:37:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:32,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:33,775 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 18:37:33,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:33,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673396300] [2022-11-18 18:37:33,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673396300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:33,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:33,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:33,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371290676] [2022-11-18 18:37:33,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:33,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:33,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:33,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 952 places, 836 transitions, 18569 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:33,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:33,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:33,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:41,462 INFO L130 PetriNetUnfolder]: 815/3558 cut-off events. [2022-11-18 18:37:41,463 INFO L131 PetriNetUnfolder]: For 160150/160152 co-relation queries the response was YES. [2022-11-18 18:37:41,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32649 conditions, 3558 events. 815/3558 cut-off events. For 160150/160152 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36622 event pairs, 169 based on Foata normal form. 5/3535 useless extension candidates. Maximal degree in co-relation 32294. Up to 1139 conditions per place. [2022-11-18 18:37:41,549 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 653 selfloop transitions, 317 changer transitions 0/995 dead transitions. [2022-11-18 18:37:41,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 995 transitions, 23422 flow [2022-11-18 18:37:41,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 18:37:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-18 18:37:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 1310 transitions. [2022-11-18 18:37:41,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4173303599872571 [2022-11-18 18:37:41,552 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 1310 transitions. [2022-11-18 18:37:41,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 1310 transitions. [2022-11-18 18:37:41,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:41,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 1310 transitions. [2022-11-18 18:37:41,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 30.46511627906977) internal successors, (1310), 43 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states 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 18:37:41,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states 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 18:37:41,556 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 73.0) internal successors, (3212), 44 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states 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 18:37:41,556 INFO L175 Difference]: Start difference. First operand has 952 places, 836 transitions, 18569 flow. Second operand 43 states and 1310 transitions. [2022-11-18 18:37:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 995 transitions, 23422 flow [2022-11-18 18:37:43,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 995 transitions, 23026 flow, removed 109 selfloop flow, removed 12 redundant places. [2022-11-18 18:37:43,619 INFO L231 Difference]: Finished difference. Result has 994 places, 867 transitions, 19982 flow [2022-11-18 18:37:43,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18229, PETRI_DIFFERENCE_MINUEND_PLACES=940, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=19982, PETRI_PLACES=994, PETRI_TRANSITIONS=867} [2022-11-18 18:37:43,621 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 918 predicate places. [2022-11-18 18:37:43,621 INFO L495 AbstractCegarLoop]: Abstraction has has 994 places, 867 transitions, 19982 flow [2022-11-18 18:37:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:43,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:43,622 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] [2022-11-18 18:37:43,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-18 18:37:43,622 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:37:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash -477116039, now seen corresponding path program 12 times [2022-11-18 18:37:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:43,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145792443] [2022-11-18 18:37:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:44,482 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 18:37:44,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:44,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145792443] [2022-11-18 18:37:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145792443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:44,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:44,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:44,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530606122] [2022-11-18 18:37:44,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:44,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:44,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 867 transitions, 19982 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:44,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:44,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:44,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:54,543 INFO L130 PetriNetUnfolder]: 801/3433 cut-off events. [2022-11-18 18:37:54,543 INFO L131 PetriNetUnfolder]: For 160433/160435 co-relation queries the response was YES. [2022-11-18 18:37:54,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32807 conditions, 3433 events. 801/3433 cut-off events. For 160433/160435 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 34878 event pairs, 23 based on Foata normal form. 23/3429 useless extension candidates. Maximal degree in co-relation 32440. Up to 568 conditions per place. [2022-11-18 18:37:54,640 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 557 selfloop transitions, 558 changer transitions 0/1140 dead transitions. [2022-11-18 18:37:54,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1055 places, 1140 transitions, 27217 flow [2022-11-18 18:37:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 18:37:54,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-18 18:37:54,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 1861 transitions. [2022-11-18 18:37:54,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4111798497569598 [2022-11-18 18:37:54,645 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 1861 transitions. [2022-11-18 18:37:54,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 1861 transitions. [2022-11-18 18:37:54,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:54,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 1861 transitions. [2022-11-18 18:37:54,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 30.016129032258064) internal successors, (1861), 62 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states 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 18:37:54,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:54,655 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 73.0) internal successors, (4599), 63 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:54,655 INFO L175 Difference]: Start difference. First operand has 994 places, 867 transitions, 19982 flow. Second operand 62 states and 1861 transitions. [2022-11-18 18:37:54,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1055 places, 1140 transitions, 27217 flow [2022-11-18 18:37:56,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1033 places, 1140 transitions, 26702 flow, removed 104 selfloop flow, removed 22 redundant places. [2022-11-18 18:37:56,922 INFO L231 Difference]: Finished difference. Result has 1045 places, 942 transitions, 22950 flow [2022-11-18 18:37:56,923 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19557, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=22950, PETRI_PLACES=1045, PETRI_TRANSITIONS=942} [2022-11-18 18:37:56,923 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 969 predicate places. [2022-11-18 18:37:56,923 INFO L495 AbstractCegarLoop]: Abstraction has has 1045 places, 942 transitions, 22950 flow [2022-11-18 18:37:56,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:56,924 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:56,924 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] [2022-11-18 18:37:56,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-18 18:37:56,924 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:37:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash 221570866, now seen corresponding path program 9 times [2022-11-18 18:37:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:56,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404351130] [2022-11-18 18:37:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:57,790 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 18:37:57,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:57,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404351130] [2022-11-18 18:37:57,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404351130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:57,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:57,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:37:57,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488652704] [2022-11-18 18:37:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:57,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:37:57,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:37:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:37:57,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:37:57,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 942 transitions, 22950 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:37:57,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:57,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:37:57,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:04,021 INFO L130 PetriNetUnfolder]: 828/3544 cut-off events. [2022-11-18 18:38:04,021 INFO L131 PetriNetUnfolder]: For 188444/188448 co-relation queries the response was YES. [2022-11-18 18:38:04,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35171 conditions, 3544 events. 828/3544 cut-off events. For 188444/188448 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36366 event pairs, 131 based on Foata normal form. 3/3520 useless extension candidates. Maximal degree in co-relation 34799. Up to 1358 conditions per place. [2022-11-18 18:38:04,107 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 834 selfloop transitions, 240 changer transitions 0/1099 dead transitions. [2022-11-18 18:38:04,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1074 places, 1099 transitions, 27747 flow [2022-11-18 18:38:04,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:38:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 18:38:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 938 transitions. [2022-11-18 18:38:04,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.428310502283105 [2022-11-18 18:38:04,110 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 938 transitions. [2022-11-18 18:38:04,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 938 transitions. [2022-11-18 18:38:04,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:04,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 938 transitions. [2022-11-18 18:38:04,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 31.266666666666666) internal successors, (938), 30 states have internal predecessors, (938), 0 states have call successors, (0), 0 states 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 18:38:04,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states 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 18:38:04,113 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 73.0) internal successors, (2263), 31 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states 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 18:38:04,113 INFO L175 Difference]: Start difference. First operand has 1045 places, 942 transitions, 22950 flow. Second operand 30 states and 938 transitions. [2022-11-18 18:38:04,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1074 places, 1099 transitions, 27747 flow [2022-11-18 18:38:06,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1043 places, 1099 transitions, 26449 flow, removed 138 selfloop flow, removed 31 redundant places. [2022-11-18 18:38:06,519 INFO L231 Difference]: Finished difference. Result has 1053 places, 979 transitions, 23303 flow [2022-11-18 18:38:06,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21824, PETRI_DIFFERENCE_MINUEND_PLACES=1014, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23303, PETRI_PLACES=1053, PETRI_TRANSITIONS=979} [2022-11-18 18:38:06,520 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 977 predicate places. [2022-11-18 18:38:06,520 INFO L495 AbstractCegarLoop]: Abstraction has has 1053 places, 979 transitions, 23303 flow [2022-11-18 18:38:06,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:06,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:06,521 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] [2022-11-18 18:38:06,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-18 18:38:06,521 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:38:06,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash -399715382, now seen corresponding path program 10 times [2022-11-18 18:38:06,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:06,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281706210] [2022-11-18 18:38:06,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:06,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:07,299 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 18:38:07,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:07,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281706210] [2022-11-18 18:38:07,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281706210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:07,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:07,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:38:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304435512] [2022-11-18 18:38:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:07,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:38:07,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:38:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:38:07,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:38:07,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1053 places, 979 transitions, 23303 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:07,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:07,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:38:07,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:14,327 INFO L130 PetriNetUnfolder]: 832/3543 cut-off events. [2022-11-18 18:38:14,327 INFO L131 PetriNetUnfolder]: For 177205/177209 co-relation queries the response was YES. [2022-11-18 18:38:14,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34986 conditions, 3543 events. 832/3543 cut-off events. For 177205/177209 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 36149 event pairs, 104 based on Foata normal form. 3/3519 useless extension candidates. Maximal degree in co-relation 34617. Up to 1016 conditions per place. [2022-11-18 18:38:14,541 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 874 selfloop transitions, 245 changer transitions 0/1144 dead transitions. [2022-11-18 18:38:14,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1083 places, 1144 transitions, 28069 flow [2022-11-18 18:38:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:38:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 18:38:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 976 transitions. [2022-11-18 18:38:14,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43128590366769776 [2022-11-18 18:38:14,544 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 976 transitions. [2022-11-18 18:38:14,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 976 transitions. [2022-11-18 18:38:14,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:14,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 976 transitions. [2022-11-18 18:38:14,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 31.483870967741936) internal successors, (976), 31 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 18:38:14,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 18:38:14,548 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 73.0) internal successors, (2336), 32 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states 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 18:38:14,548 INFO L175 Difference]: Start difference. First operand has 1053 places, 979 transitions, 23303 flow. Second operand 31 states and 976 transitions. [2022-11-18 18:38:14,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1083 places, 1144 transitions, 28069 flow [2022-11-18 18:38:16,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1073 places, 1144 transitions, 27797 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-11-18 18:38:16,966 INFO L231 Difference]: Finished difference. Result has 1081 places, 1000 transitions, 24051 flow [2022-11-18 18:38:16,967 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23047, PETRI_DIFFERENCE_MINUEND_PLACES=1043, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=979, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=24051, PETRI_PLACES=1081, PETRI_TRANSITIONS=1000} [2022-11-18 18:38:16,968 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1005 predicate places. [2022-11-18 18:38:16,968 INFO L495 AbstractCegarLoop]: Abstraction has has 1081 places, 1000 transitions, 24051 flow [2022-11-18 18:38:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:16,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:16,969 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] [2022-11-18 18:38:16,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-18 18:38:16,969 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:38:16,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash 118263444, now seen corresponding path program 11 times [2022-11-18 18:38:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:16,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734967296] [2022-11-18 18:38:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:18,047 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 18:38:18,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:18,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734967296] [2022-11-18 18:38:18,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734967296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:18,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:18,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:38:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945188504] [2022-11-18 18:38:18,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:18,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:38:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:18,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:38:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:38:18,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:38:18,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1081 places, 1000 transitions, 24051 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:18,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:18,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:38:18,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:25,463 INFO L130 PetriNetUnfolder]: 837/3574 cut-off events. [2022-11-18 18:38:25,463 INFO L131 PetriNetUnfolder]: For 186342/186346 co-relation queries the response was YES. [2022-11-18 18:38:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35777 conditions, 3574 events. 837/3574 cut-off events. For 186342/186346 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 36628 event pairs, 75 based on Foata normal form. 3/3550 useless extension candidates. Maximal degree in co-relation 35396. Up to 990 conditions per place. [2022-11-18 18:38:25,569 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 819 selfloop transitions, 332 changer transitions 0/1176 dead transitions. [2022-11-18 18:38:25,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1119 places, 1176 transitions, 28932 flow [2022-11-18 18:38:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 18:38:25,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 18:38:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1199 transitions. [2022-11-18 18:38:25,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42114506498068144 [2022-11-18 18:38:25,572 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1199 transitions. [2022-11-18 18:38:25,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1199 transitions. [2022-11-18 18:38:25,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:25,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1199 transitions. [2022-11-18 18:38:25,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.743589743589745) internal successors, (1199), 39 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states 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 18:38:25,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:38:25,578 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 73.0) internal successors, (2920), 40 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 18:38:25,578 INFO L175 Difference]: Start difference. First operand has 1081 places, 1000 transitions, 24051 flow. Second operand 39 states and 1199 transitions. [2022-11-18 18:38:25,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1119 places, 1176 transitions, 28932 flow [2022-11-18 18:38:27,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1105 places, 1176 transitions, 28420 flow, removed 43 selfloop flow, removed 14 redundant places. [2022-11-18 18:38:28,020 INFO L231 Difference]: Finished difference. Result has 1116 places, 1031 transitions, 24874 flow [2022-11-18 18:38:28,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=23539, PETRI_DIFFERENCE_MINUEND_PLACES=1067, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=24874, PETRI_PLACES=1116, PETRI_TRANSITIONS=1031} [2022-11-18 18:38:28,021 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1040 predicate places. [2022-11-18 18:38:28,021 INFO L495 AbstractCegarLoop]: Abstraction has has 1116 places, 1031 transitions, 24874 flow [2022-11-18 18:38:28,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:28,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:28,022 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] [2022-11-18 18:38:28,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-18 18:38:28,022 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:38:28,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:28,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1274672912, now seen corresponding path program 12 times [2022-11-18 18:38:28,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:28,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156901461] [2022-11-18 18:38:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:28,814 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 18:38:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:28,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156901461] [2022-11-18 18:38:28,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156901461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:28,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:28,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:38:28,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712403790] [2022-11-18 18:38:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:28,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:38:28,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:38:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:38:28,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:38:28,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1116 places, 1031 transitions, 24874 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:28,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:28,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:38:28,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:37,298 INFO L130 PetriNetUnfolder]: 839/3624 cut-off events. [2022-11-18 18:38:37,299 INFO L131 PetriNetUnfolder]: For 206430/206434 co-relation queries the response was YES. [2022-11-18 18:38:37,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36400 conditions, 3624 events. 839/3624 cut-off events. For 206430/206434 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 37414 event pairs, 149 based on Foata normal form. 3/3600 useless extension candidates. Maximal degree in co-relation 36007. Up to 1398 conditions per place. [2022-11-18 18:38:37,420 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 906 selfloop transitions, 238 changer transitions 0/1169 dead transitions. [2022-11-18 18:38:37,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1153 places, 1169 transitions, 29212 flow [2022-11-18 18:38:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:38:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 18:38:37,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1168 transitions. [2022-11-18 18:38:37,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-11-18 18:38:37,423 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1168 transitions. [2022-11-18 18:38:37,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1168 transitions. [2022-11-18 18:38:37,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:37,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1168 transitions. [2022-11-18 18:38:37,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 30.736842105263158) internal successors, (1168), 38 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states 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 18:38:37,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 18:38:37,432 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 73.0) internal successors, (2847), 39 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states 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 18:38:37,432 INFO L175 Difference]: Start difference. First operand has 1116 places, 1031 transitions, 24874 flow. Second operand 38 states and 1168 transitions. [2022-11-18 18:38:37,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1153 places, 1169 transitions, 29212 flow [2022-11-18 18:38:39,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1137 places, 1169 transitions, 28723 flow, removed 37 selfloop flow, removed 16 redundant places. [2022-11-18 18:38:39,979 INFO L231 Difference]: Finished difference. Result has 1148 places, 1061 transitions, 25596 flow [2022-11-18 18:38:39,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=24392, PETRI_DIFFERENCE_MINUEND_PLACES=1100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=25596, PETRI_PLACES=1148, PETRI_TRANSITIONS=1061} [2022-11-18 18:38:39,981 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1072 predicate places. [2022-11-18 18:38:39,981 INFO L495 AbstractCegarLoop]: Abstraction has has 1148 places, 1061 transitions, 25596 flow [2022-11-18 18:38:39,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:39,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:39,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:39,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-18 18:38:39,982 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:38:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash -830193998, now seen corresponding path program 13 times [2022-11-18 18:38:40,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820943526] [2022-11-18 18:38:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:40,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:40,908 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 18:38:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:40,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820943526] [2022-11-18 18:38:40,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820943526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:40,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:40,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:38:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893844757] [2022-11-18 18:38:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:40,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:38:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:40,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:38:40,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:38:40,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:38:40,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1148 places, 1061 transitions, 25596 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:40,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:40,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:38:40,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:38:51,093 INFO L130 PetriNetUnfolder]: 841/3617 cut-off events. [2022-11-18 18:38:51,093 INFO L131 PetriNetUnfolder]: For 200997/201001 co-relation queries the response was YES. [2022-11-18 18:38:51,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36679 conditions, 3617 events. 841/3617 cut-off events. For 200997/201001 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 37236 event pairs, 2 based on Foata normal form. 3/3593 useless extension candidates. Maximal degree in co-relation 36280. Up to 823 conditions per place. [2022-11-18 18:38:51,194 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 733 selfloop transitions, 520 changer transitions 0/1278 dead transitions. [2022-11-18 18:38:51,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1205 places, 1278 transitions, 31377 flow [2022-11-18 18:38:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 18:38:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-18 18:38:51,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1736 transitions. [2022-11-18 18:38:51,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41001417099669346 [2022-11-18 18:38:51,196 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1736 transitions. [2022-11-18 18:38:51,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1736 transitions. [2022-11-18 18:38:51,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:38:51,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1736 transitions. [2022-11-18 18:38:51,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 29.93103448275862) internal successors, (1736), 58 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states 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 18:38:51,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states 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 18:38:51,204 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states 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 18:38:51,204 INFO L175 Difference]: Start difference. First operand has 1148 places, 1061 transitions, 25596 flow. Second operand 58 states and 1736 transitions. [2022-11-18 18:38:51,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1205 places, 1278 transitions, 31377 flow [2022-11-18 18:38:53,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1191 places, 1278 transitions, 31083 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-11-18 18:38:53,649 INFO L231 Difference]: Finished difference. Result has 1197 places, 1094 transitions, 27152 flow [2022-11-18 18:38:53,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=25322, PETRI_DIFFERENCE_MINUEND_PLACES=1134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=487, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=27152, PETRI_PLACES=1197, PETRI_TRANSITIONS=1094} [2022-11-18 18:38:53,650 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1121 predicate places. [2022-11-18 18:38:53,650 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 1094 transitions, 27152 flow [2022-11-18 18:38:53,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:53,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:38:53,651 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] [2022-11-18 18:38:53,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-18 18:38:53,651 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:38:53,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:53,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1451480246, now seen corresponding path program 14 times [2022-11-18 18:38:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:53,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356472375] [2022-11-18 18:38:53,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:54,319 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 18:38:54,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:54,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356472375] [2022-11-18 18:38:54,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356472375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:54,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:54,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:38:54,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865587711] [2022-11-18 18:38:54,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:54,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:38:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:38:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:38:54,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:38:54,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 1094 transitions, 27152 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:38:54,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:38:54,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:38:54,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:05,748 INFO L130 PetriNetUnfolder]: 841/3647 cut-off events. [2022-11-18 18:39:05,749 INFO L131 PetriNetUnfolder]: For 223288/223292 co-relation queries the response was YES. [2022-11-18 18:39:05,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37835 conditions, 3647 events. 841/3647 cut-off events. For 223288/223292 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 37832 event pairs, 71 based on Foata normal form. 5/3625 useless extension candidates. Maximal degree in co-relation 37427. Up to 1207 conditions per place. [2022-11-18 18:39:05,846 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 802 selfloop transitions, 423 changer transitions 0/1250 dead transitions. [2022-11-18 18:39:05,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1252 places, 1250 transitions, 31768 flow [2022-11-18 18:39:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 18:39:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-18 18:39:05,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1684 transitions. [2022-11-18 18:39:05,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41193737769080235 [2022-11-18 18:39:05,849 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1684 transitions. [2022-11-18 18:39:05,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1684 transitions. [2022-11-18 18:39:05,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:05,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1684 transitions. [2022-11-18 18:39:05,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.071428571428573) internal successors, (1684), 56 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states 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 18:39:05,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states 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 18:39:05,856 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 73.0) internal successors, (4161), 57 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states 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 18:39:05,856 INFO L175 Difference]: Start difference. First operand has 1197 places, 1094 transitions, 27152 flow. Second operand 56 states and 1684 transitions. [2022-11-18 18:39:05,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1252 places, 1250 transitions, 31768 flow [2022-11-18 18:39:08,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1193 places, 1250 transitions, 30496 flow, removed 61 selfloop flow, removed 59 redundant places. [2022-11-18 18:39:08,395 INFO L231 Difference]: Finished difference. Result has 1197 places, 1103 transitions, 27207 flow [2022-11-18 18:39:08,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26057, PETRI_DIFFERENCE_MINUEND_PLACES=1138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=414, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=677, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=27207, PETRI_PLACES=1197, PETRI_TRANSITIONS=1103} [2022-11-18 18:39:08,396 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1121 predicate places. [2022-11-18 18:39:08,397 INFO L495 AbstractCegarLoop]: Abstraction has has 1197 places, 1103 transitions, 27207 flow [2022-11-18 18:39:08,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:08,397 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:08,397 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] [2022-11-18 18:39:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-18 18:39:08,397 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:39:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1094530554, now seen corresponding path program 15 times [2022-11-18 18:39:08,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:08,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428768118] [2022-11-18 18:39:08,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:08,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:09,118 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 18:39:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:09,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428768118] [2022-11-18 18:39:09,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428768118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:09,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:09,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:39:09,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088325454] [2022-11-18 18:39:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:09,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:39:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:39:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:39:09,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:39:09,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1197 places, 1103 transitions, 27207 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:09,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:09,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:39:09,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:14,774 INFO L130 PetriNetUnfolder]: 860/3677 cut-off events. [2022-11-18 18:39:14,774 INFO L131 PetriNetUnfolder]: For 219472/219478 co-relation queries the response was YES. [2022-11-18 18:39:14,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38309 conditions, 3677 events. 860/3677 cut-off events. For 219472/219478 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 37864 event pairs, 64 based on Foata normal form. 3/3654 useless extension candidates. Maximal degree in co-relation 37924. Up to 999 conditions per place. [2022-11-18 18:39:14,861 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 884 selfloop transitions, 369 changer transitions 0/1278 dead transitions. [2022-11-18 18:39:14,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1229 places, 1278 transitions, 32626 flow [2022-11-18 18:39:14,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 18:39:14,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 18:39:14,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1026 transitions. [2022-11-18 18:39:14,863 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2022-11-18 18:39:14,863 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1026 transitions. [2022-11-18 18:39:14,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1026 transitions. [2022-11-18 18:39:14,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:14,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1026 transitions. [2022-11-18 18:39:14,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 31.09090909090909) internal successors, (1026), 33 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 18:39:14,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states 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 18:39:14,866 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 73.0) internal successors, (2482), 34 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states 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 18:39:14,866 INFO L175 Difference]: Start difference. First operand has 1197 places, 1103 transitions, 27207 flow. Second operand 33 states and 1026 transitions. [2022-11-18 18:39:14,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1229 places, 1278 transitions, 32626 flow [2022-11-18 18:39:17,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1198 places, 1278 transitions, 31987 flow, removed 20 selfloop flow, removed 31 redundant places. [2022-11-18 18:39:17,434 INFO L231 Difference]: Finished difference. Result has 1209 places, 1127 transitions, 28229 flow [2022-11-18 18:39:17,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=26600, PETRI_DIFFERENCE_MINUEND_PLACES=1166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=28229, PETRI_PLACES=1209, PETRI_TRANSITIONS=1127} [2022-11-18 18:39:17,435 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1133 predicate places. [2022-11-18 18:39:17,435 INFO L495 AbstractCegarLoop]: Abstraction has has 1209 places, 1127 transitions, 28229 flow [2022-11-18 18:39:17,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:17,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:17,436 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] [2022-11-18 18:39:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-18 18:39:17,436 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:39:17,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:17,436 INFO L85 PathProgramCache]: Analyzing trace with hash 294027366, now seen corresponding path program 16 times [2022-11-18 18:39:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:17,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304430694] [2022-11-18 18:39:17,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:17,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:18,269 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 18:39:18,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:18,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304430694] [2022-11-18 18:39:18,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304430694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:18,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:18,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:39:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670822804] [2022-11-18 18:39:18,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:18,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:39:18,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:18,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:39:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:39:18,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:39:18,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1209 places, 1127 transitions, 28229 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:18,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:18,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:39:18,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:26,281 INFO L130 PetriNetUnfolder]: 862/3708 cut-off events. [2022-11-18 18:39:26,282 INFO L131 PetriNetUnfolder]: For 246171/246177 co-relation queries the response was YES. [2022-11-18 18:39:26,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39174 conditions, 3708 events. 862/3708 cut-off events. For 246171/246177 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 38570 event pairs, 108 based on Foata normal form. 3/3685 useless extension candidates. Maximal degree in co-relation 38779. Up to 1367 conditions per place. [2022-11-18 18:39:26,382 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 898 selfloop transitions, 342 changer transitions 0/1265 dead transitions. [2022-11-18 18:39:26,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1243 places, 1265 transitions, 32785 flow [2022-11-18 18:39:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:39:26,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:39:26,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1077 transitions. [2022-11-18 18:39:26,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4215264187866928 [2022-11-18 18:39:26,385 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1077 transitions. [2022-11-18 18:39:26,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1077 transitions. [2022-11-18 18:39:26,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:26,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1077 transitions. [2022-11-18 18:39:26,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 30.771428571428572) internal successors, (1077), 35 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states 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 18:39:26,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states 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 18:39:26,389 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 73.0) internal successors, (2628), 36 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states 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 18:39:26,389 INFO L175 Difference]: Start difference. First operand has 1209 places, 1127 transitions, 28229 flow. Second operand 35 states and 1077 transitions. [2022-11-18 18:39:26,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1243 places, 1265 transitions, 32785 flow [2022-11-18 18:39:29,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1225 places, 1265 transitions, 31995 flow, removed 95 selfloop flow, removed 18 redundant places. [2022-11-18 18:39:29,059 INFO L231 Difference]: Finished difference. Result has 1232 places, 1146 transitions, 28708 flow [2022-11-18 18:39:29,060 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=27511, PETRI_DIFFERENCE_MINUEND_PLACES=1191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28708, PETRI_PLACES=1232, PETRI_TRANSITIONS=1146} [2022-11-18 18:39:29,061 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1156 predicate places. [2022-11-18 18:39:29,061 INFO L495 AbstractCegarLoop]: Abstraction has has 1232 places, 1146 transitions, 28708 flow [2022-11-18 18:39:29,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:29,061 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:29,061 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] [2022-11-18 18:39:29,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-18 18:39:29,062 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:39:29,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash -699250246, now seen corresponding path program 17 times [2022-11-18 18:39:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:29,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74640490] [2022-11-18 18:39:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:29,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:30,092 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 18:39:30,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:30,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74640490] [2022-11-18 18:39:30,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74640490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:30,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:30,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:39:30,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894666606] [2022-11-18 18:39:30,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:39:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:39:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:39:30,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:39:30,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1232 places, 1146 transitions, 28708 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:30,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:30,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:39:30,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:35,803 INFO L130 PetriNetUnfolder]: 861/3718 cut-off events. [2022-11-18 18:39:35,803 INFO L131 PetriNetUnfolder]: For 251302/251308 co-relation queries the response was YES. [2022-11-18 18:39:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39429 conditions, 3718 events. 861/3718 cut-off events. For 251302/251308 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 38754 event pairs, 112 based on Foata normal form. 3/3695 useless extension candidates. Maximal degree in co-relation 39030. Up to 1254 conditions per place. [2022-11-18 18:39:35,895 INFO L137 encePairwiseOnDemand]: 48/73 looper letters, 861 selfloop transitions, 397 changer transitions 0/1283 dead transitions. [2022-11-18 18:39:35,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1263 places, 1283 transitions, 33367 flow [2022-11-18 18:39:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 18:39:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 18:39:35,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 984 transitions. [2022-11-18 18:39:35,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2022-11-18 18:39:35,897 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 984 transitions. [2022-11-18 18:39:35,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 984 transitions. [2022-11-18 18:39:35,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:35,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 984 transitions. [2022-11-18 18:39:35,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 30.75) internal successors, (984), 32 states have internal predecessors, (984), 0 states have call successors, (0), 0 states 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 18:39:35,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 18:39:35,899 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 73.0) internal successors, (2409), 33 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states 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 18:39:35,899 INFO L175 Difference]: Start difference. First operand has 1232 places, 1146 transitions, 28708 flow. Second operand 32 states and 984 transitions. [2022-11-18 18:39:35,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1263 places, 1283 transitions, 33367 flow [2022-11-18 18:39:38,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1244 places, 1283 transitions, 32804 flow, removed 41 selfloop flow, removed 19 redundant places. [2022-11-18 18:39:38,539 INFO L231 Difference]: Finished difference. Result has 1250 places, 1160 transitions, 29500 flow [2022-11-18 18:39:38,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28156, PETRI_DIFFERENCE_MINUEND_PLACES=1213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=29500, PETRI_PLACES=1250, PETRI_TRANSITIONS=1160} [2022-11-18 18:39:38,540 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1174 predicate places. [2022-11-18 18:39:38,540 INFO L495 AbstractCegarLoop]: Abstraction has has 1250 places, 1160 transitions, 29500 flow [2022-11-18 18:39:38,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:38,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:38,541 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] [2022-11-18 18:39:38,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-18 18:39:38,541 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:39:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2146295418, now seen corresponding path program 18 times [2022-11-18 18:39:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:38,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867406946] [2022-11-18 18:39:38,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:38,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:39,214 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 18:39:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:39,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867406946] [2022-11-18 18:39:39,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867406946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:39,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:39,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:39:39,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818719436] [2022-11-18 18:39:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:39,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:39:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:39,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:39:39,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:39:39,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:39:39,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1250 places, 1160 transitions, 29500 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:39,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:39,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:39:39,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:39:51,854 INFO L130 PetriNetUnfolder]: 863/3722 cut-off events. [2022-11-18 18:39:51,854 INFO L131 PetriNetUnfolder]: For 247809/247815 co-relation queries the response was YES. [2022-11-18 18:39:51,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40211 conditions, 3722 events. 863/3722 cut-off events. For 247809/247815 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 38618 event pairs, 2 based on Foata normal form. 3/3699 useless extension candidates. Maximal degree in co-relation 39807. Up to 737 conditions per place. [2022-11-18 18:39:52,121 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 715 selfloop transitions, 626 changer transitions 0/1366 dead transitions. [2022-11-18 18:39:52,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1313 places, 1366 transitions, 35005 flow [2022-11-18 18:39:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-18 18:39:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-18 18:39:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1901 transitions. [2022-11-18 18:39:52,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4068921232876712 [2022-11-18 18:39:52,125 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 1901 transitions. [2022-11-18 18:39:52,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 1901 transitions. [2022-11-18 18:39:52,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:39:52,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 1901 transitions. [2022-11-18 18:39:52,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 29.703125) internal successors, (1901), 64 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:52,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states 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 18:39:52,133 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 73.0) internal successors, (4745), 65 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states 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 18:39:52,133 INFO L175 Difference]: Start difference. First operand has 1250 places, 1160 transitions, 29500 flow. Second operand 64 states and 1901 transitions. [2022-11-18 18:39:52,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1313 places, 1366 transitions, 35005 flow [2022-11-18 18:39:55,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1292 places, 1366 transitions, 34167 flow, removed 55 selfloop flow, removed 21 redundant places. [2022-11-18 18:39:55,216 INFO L231 Difference]: Finished difference. Result has 1298 places, 1176 transitions, 30447 flow [2022-11-18 18:39:55,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=28678, PETRI_DIFFERENCE_MINUEND_PLACES=1229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=30447, PETRI_PLACES=1298, PETRI_TRANSITIONS=1176} [2022-11-18 18:39:55,217 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1222 predicate places. [2022-11-18 18:39:55,218 INFO L495 AbstractCegarLoop]: Abstraction has has 1298 places, 1176 transitions, 30447 flow [2022-11-18 18:39:55,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:55,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:39:55,218 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] [2022-11-18 18:39:55,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-18 18:39:55,218 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:39:55,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1999101956, now seen corresponding path program 19 times [2022-11-18 18:39:55,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:55,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461411043] [2022-11-18 18:39:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:55,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:56,061 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 18:39:56,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:56,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461411043] [2022-11-18 18:39:56,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461411043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:56,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:56,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:39:56,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093664755] [2022-11-18 18:39:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:56,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:39:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:56,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:39:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:39:56,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:39:56,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1298 places, 1176 transitions, 30447 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:39:56,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:39:56,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:39:56,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:02,209 INFO L130 PetriNetUnfolder]: 865/3754 cut-off events. [2022-11-18 18:40:02,209 INFO L131 PetriNetUnfolder]: For 256129/256135 co-relation queries the response was YES. [2022-11-18 18:40:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41196 conditions, 3754 events. 865/3754 cut-off events. For 256129/256135 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39108 event pairs, 64 based on Foata normal form. 3/3731 useless extension candidates. Maximal degree in co-relation 40788. Up to 898 conditions per place. [2022-11-18 18:40:02,304 INFO L137 encePairwiseOnDemand]: 47/73 looper letters, 858 selfloop transitions, 455 changer transitions 0/1338 dead transitions. [2022-11-18 18:40:02,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1331 places, 1338 transitions, 35529 flow [2022-11-18 18:40:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:40:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-18 18:40:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1050 transitions. [2022-11-18 18:40:02,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42304593070104757 [2022-11-18 18:40:02,306 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1050 transitions. [2022-11-18 18:40:02,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1050 transitions. [2022-11-18 18:40:02,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:02,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1050 transitions. [2022-11-18 18:40:02,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 30.88235294117647) internal successors, (1050), 34 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states 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 18:40:02,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 18:40:02,308 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 73.0) internal successors, (2555), 35 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states 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 18:40:02,308 INFO L175 Difference]: Start difference. First operand has 1298 places, 1176 transitions, 30447 flow. Second operand 34 states and 1050 transitions. [2022-11-18 18:40:02,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1331 places, 1338 transitions, 35529 flow [2022-11-18 18:40:05,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1273 places, 1338 transitions, 34290 flow, removed 34 selfloop flow, removed 58 redundant places. [2022-11-18 18:40:05,178 INFO L231 Difference]: Finished difference. Result has 1280 places, 1187 transitions, 30515 flow [2022-11-18 18:40:05,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29237, PETRI_DIFFERENCE_MINUEND_PLACES=1240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=30515, PETRI_PLACES=1280, PETRI_TRANSITIONS=1187} [2022-11-18 18:40:05,179 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1204 predicate places. [2022-11-18 18:40:05,180 INFO L495 AbstractCegarLoop]: Abstraction has has 1280 places, 1187 transitions, 30515 flow [2022-11-18 18:40:05,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:40:05,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:05,180 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] [2022-11-18 18:40:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-18 18:40:05,180 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:40:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash -430287818, now seen corresponding path program 20 times [2022-11-18 18:40:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:05,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137103293] [2022-11-18 18:40:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:05,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:05,859 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 18:40:05,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:05,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137103293] [2022-11-18 18:40:05,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137103293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:05,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:05,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:40:05,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512965981] [2022-11-18 18:40:05,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:05,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:40:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:05,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:40:05,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:40:05,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:40:05,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1280 places, 1187 transitions, 30515 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:40:05,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:05,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:40:05,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:20,422 INFO L130 PetriNetUnfolder]: 873/3763 cut-off events. [2022-11-18 18:40:20,422 INFO L131 PetriNetUnfolder]: For 263927/263933 co-relation queries the response was YES. [2022-11-18 18:40:20,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41392 conditions, 3763 events. 873/3763 cut-off events. For 263927/263933 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 39135 event pairs, 2 based on Foata normal form. 13/3750 useless extension candidates. Maximal degree in co-relation 41001. Up to 374 conditions per place. [2022-11-18 18:40:20,541 INFO L137 encePairwiseOnDemand]: 45/73 looper letters, 584 selfloop transitions, 805 changer transitions 0/1414 dead transitions. [2022-11-18 18:40:20,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1360 places, 1414 transitions, 36549 flow [2022-11-18 18:40:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-18 18:40:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-11-18 18:40:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2364 transitions. [2022-11-18 18:40:20,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3997970573313039 [2022-11-18 18:40:20,545 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2364 transitions. [2022-11-18 18:40:20,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2364 transitions. [2022-11-18 18:40:20,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:20,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2364 transitions. [2022-11-18 18:40:20,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 29.185185185185187) internal successors, (2364), 81 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states 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 18:40:20,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states 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 18:40:20,553 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 73.0) internal successors, (5986), 82 states have internal predecessors, (5986), 0 states have call successors, (0), 0 states 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 18:40:20,553 INFO L175 Difference]: Start difference. First operand has 1280 places, 1187 transitions, 30515 flow. Second operand 81 states and 2364 transitions. [2022-11-18 18:40:20,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1360 places, 1414 transitions, 36549 flow [2022-11-18 18:40:23,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1339 places, 1414 transitions, 35766 flow, removed 24 selfloop flow, removed 21 redundant places. [2022-11-18 18:40:23,864 INFO L231 Difference]: Finished difference. Result has 1348 places, 1233 transitions, 32436 flow [2022-11-18 18:40:23,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=29760, PETRI_DIFFERENCE_MINUEND_PLACES=1259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=761, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=32436, PETRI_PLACES=1348, PETRI_TRANSITIONS=1233} [2022-11-18 18:40:23,865 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1272 predicate places. [2022-11-18 18:40:23,865 INFO L495 AbstractCegarLoop]: Abstraction has has 1348 places, 1233 transitions, 32436 flow [2022-11-18 18:40:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:40:23,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:23,866 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] [2022-11-18 18:40:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-18 18:40:23,866 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:40:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1393496830, now seen corresponding path program 21 times [2022-11-18 18:40:23,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:23,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974391875] [2022-11-18 18:40:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:24,533 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 18:40:24,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:24,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974391875] [2022-11-18 18:40:24,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974391875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:24,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:24,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:40:24,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887583237] [2022-11-18 18:40:24,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:40:24,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:40:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:40:24,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:40:24,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1348 places, 1233 transitions, 32436 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:40:24,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:24,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:40:24,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:40:33,438 INFO L130 PetriNetUnfolder]: 873/3772 cut-off events. [2022-11-18 18:40:33,439 INFO L131 PetriNetUnfolder]: For 269957/269963 co-relation queries the response was YES. [2022-11-18 18:40:33,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42444 conditions, 3772 events. 873/3772 cut-off events. For 269957/269963 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 39219 event pairs, 2 based on Foata normal form. 3/3749 useless extension candidates. Maximal degree in co-relation 42023. Up to 374 conditions per place. [2022-11-18 18:40:33,763 INFO L137 encePairwiseOnDemand]: 46/73 looper letters, 548 selfloop transitions, 816 changer transitions 0/1389 dead transitions. [2022-11-18 18:40:33,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1404 places, 1389 transitions, 37384 flow [2022-11-18 18:40:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-18 18:40:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-18 18:40:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1692 transitions. [2022-11-18 18:40:33,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3996221067548418 [2022-11-18 18:40:33,765 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1692 transitions. [2022-11-18 18:40:33,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1692 transitions. [2022-11-18 18:40:33,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:40:33,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1692 transitions. [2022-11-18 18:40:33,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 29.17241379310345) internal successors, (1692), 58 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states 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 18:40:33,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states 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 18:40:33,769 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 73.0) internal successors, (4307), 59 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states 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 18:40:33,769 INFO L175 Difference]: Start difference. First operand has 1348 places, 1233 transitions, 32436 flow. Second operand 58 states and 1692 transitions. [2022-11-18 18:40:33,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1404 places, 1389 transitions, 37384 flow [2022-11-18 18:40:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1343 places, 1389 transitions, 35650 flow, removed 73 selfloop flow, removed 61 redundant places. [2022-11-18 18:40:36,767 INFO L231 Difference]: Finished difference. Result has 1343 places, 1232 transitions, 32318 flow [2022-11-18 18:40:36,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=30686, PETRI_DIFFERENCE_MINUEND_PLACES=1286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=816, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=32318, PETRI_PLACES=1343, PETRI_TRANSITIONS=1232} [2022-11-18 18:40:36,768 INFO L288 CegarLoopForPetriNet]: 76 programPoint places, 1267 predicate places. [2022-11-18 18:40:36,768 INFO L495 AbstractCegarLoop]: Abstraction has has 1343 places, 1232 transitions, 32318 flow [2022-11-18 18:40:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:40:36,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:40:36,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-18 18:40:36,769 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 18:40:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash 956608903, now seen corresponding path program 13 times [2022-11-18 18:40:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:36,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629586790] [2022-11-18 18:40:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:37,812 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 18:40:37,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:37,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629586790] [2022-11-18 18:40:37,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629586790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:37,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:37,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-18 18:40:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606113640] [2022-11-18 18:40:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:37,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 18:40:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 18:40:37,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-11-18 18:40:37,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2022-11-18 18:40:37,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1343 places, 1232 transitions, 32318 flow. Second operand has 23 states, 23 states have (on average 27.565217391304348) internal successors, (634), 23 states have internal predecessors, (634), 0 states have call successors, (0), 0 states 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 18:40:37,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:40:37,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2022-11-18 18:40:37,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand