./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:46:24,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:46:24,584 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:46:24,589 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:46:24,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:46:24,616 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:46:24,617 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:46:24,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:46:24,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:46:24,619 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:46:24,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:46:24,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:46:24,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:46:24,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:46:24,622 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:46:24,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:46:24,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:46:24,624 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:46:24,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:46:24,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:46:24,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:46:24,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:46:24,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:46:24,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:46:24,627 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:46:24,627 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:46:24,628 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:46:24,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:46:24,629 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:46:24,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:46:24,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:46:24,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:46:24,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:46:24,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:24,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:46:24,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:46:24,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:46:24,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:46:24,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:46:24,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:46:24,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:46:24,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:46:24,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:46:24,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:46:24,633 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a [2023-11-26 10:46:24,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:46:24,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:46:24,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:46:25,000 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:46:25,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:46:25,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-26 10:46:28,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:46:28,590 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:46:28,590 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/sv-benchmarks/c/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-11-26 10:46:28,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/data/db0a5fc39/6541e19c169c48d8a4441a4c9aa96afa/FLAGff6a7da41 [2023-11-26 10:46:28,646 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/data/db0a5fc39/6541e19c169c48d8a4441a4c9aa96afa [2023-11-26 10:46:28,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:46:28,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:46:28,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:28,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:46:28,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:46:28,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:28" (1/1) ... [2023-11-26 10:46:28,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bfba51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:28, skipping insertion in model container [2023-11-26 10:46:28,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:46:28" (1/1) ... [2023-11-26 10:46:28,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:46:29,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:29,431 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:46:29,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:46:29,580 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:46:29,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29 WrapperNode [2023-11-26 10:46:29,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:46:29,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:29,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:46:29,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:46:29,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,688 INFO L138 Inliner]: procedures = 263, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2023-11-26 10:46:29,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:46:29,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:46:29,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:46:29,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:46:29,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,748 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [7, 1]. 88 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [4, 1]. [2023-11-26 10:46:29,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,776 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:46:29,800 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:46:29,800 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:46:29,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:46:29,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (1/1) ... [2023-11-26 10:46:29,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:46:29,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:29,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:46:29,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:46:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:46:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:46:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-26 10:46:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:46:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:46:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:46:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:46:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-26 10:46:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:46:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-26 10:46:29,934 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-26 10:46:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:46:29,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:46:29,939 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 10:46:30,121 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:46:30,123 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:46:30,368 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:46:30,519 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:46:30,519 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 10:46:30,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:30 BoogieIcfgContainer [2023-11-26 10:46:30,520 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:46:30,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:46:30,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:46:30,526 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:46:30,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:46:28" (1/3) ... [2023-11-26 10:46:30,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24adc8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:30, skipping insertion in model container [2023-11-26 10:46:30,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:46:29" (2/3) ... [2023-11-26 10:46:30,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24adc8f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:46:30, skipping insertion in model container [2023-11-26 10:46:30,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:46:30" (3/3) ... [2023-11-26 10:46:30,529 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2023-11-26 10:46:30,538 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 10:46:30,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:46:30,550 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 10:46:30,550 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 10:46:30,596 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 10:46:30,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 98 flow [2023-11-26 10:46:30,662 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2023-11-26 10:46:30,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:30,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 3/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-26 10:46:30,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 98 flow [2023-11-26 10:46:30,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 46 transitions, 95 flow [2023-11-26 10:46:30,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:46:30,687 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=LoopHeads, 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;@23f28bfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:46:30,687 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-26 10:46:30,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 10:46:30,691 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-26 10:46:30,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:30,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:30,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-26 10:46:30,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:30,698 INFO L85 PathProgramCache]: Analyzing trace with hash 293204, now seen corresponding path program 1 times [2023-11-26 10:46:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845506077] [2023-11-26 10:46:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:30,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:30,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:30,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:30,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845506077] [2023-11-26 10:46:30,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845506077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:30,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:30,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:30,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216550954] [2023-11-26 10:46:30,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:30,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:30,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:30,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:30,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:30,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:31,258 INFO L124 PetriNetUnfolderBase]: 128/386 cut-off events. [2023-11-26 10:46:31,259 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 10:46:31,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 386 events. 128/386 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2032 event pairs, 104 based on Foata normal form. 1/317 useless extension candidates. Maximal degree in co-relation 627. Up to 260 conditions per place. [2023-11-26 10:46:31,266 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 29 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-11-26 10:46:31,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 163 flow [2023-11-26 10:46:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2023-11-26 10:46:31,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2023-11-26 10:46:31,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 103 transitions. [2023-11-26 10:46:31,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 103 transitions. [2023-11-26 10:46:31,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:31,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 103 transitions. [2023-11-26 10:46:31,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,301 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,303 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 95 flow. Second operand 4 states and 103 transitions. [2023-11-26 10:46:31,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 163 flow [2023-11-26 10:46:31,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:31,314 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 118 flow [2023-11-26 10:46:31,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-11-26 10:46:31,319 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-11-26 10:46:31,319 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 118 flow [2023-11-26 10:46:31,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:31,319 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:46:31,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:46:31,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:31,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash 145173029, now seen corresponding path program 1 times [2023-11-26 10:46:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:31,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970600615] [2023-11-26 10:46:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:31,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970600615] [2023-11-26 10:46:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970600615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392636932] [2023-11-26 10:46:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:31,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:31,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:31,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:31,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:46:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:31,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:46:31,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:31,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:31,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392636932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:31,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:31,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-26 10:46:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945740759] [2023-11-26 10:46:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:46:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:46:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:31,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:31,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 118 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:31,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:31,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:31,902 INFO L124 PetriNetUnfolderBase]: 128/385 cut-off events. [2023-11-26 10:46:31,903 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-26 10:46:31,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 385 events. 128/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2029 event pairs, 104 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 644. Up to 255 conditions per place. [2023-11-26 10:46:31,910 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 25 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-26 10:46:31,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 176 flow [2023-11-26 10:46:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:31,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2023-11-26 10:46:31,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2023-11-26 10:46:31,917 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 134 transitions. [2023-11-26 10:46:31,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 134 transitions. [2023-11-26 10:46:31,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:31,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 134 transitions. [2023-11-26 10:46:31,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,927 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 118 flow. Second operand 6 states and 134 transitions. [2023-11-26 10:46:31,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 176 flow [2023-11-26 10:46:31,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:31,937 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 124 flow [2023-11-26 10:46:31,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-26 10:46:31,939 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2023-11-26 10:46:31,939 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 124 flow [2023-11-26 10:46:31,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:31,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:31,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:46:31,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:32,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:32,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:32,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash 205396872, now seen corresponding path program 1 times [2023-11-26 10:46:32,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:32,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750764509] [2023-11-26 10:46:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:32,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:46:32,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:32,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750764509] [2023-11-26 10:46:32,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750764509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:32,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:32,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:46:32,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57224192] [2023-11-26 10:46:32,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:32,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:32,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:32,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:32,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:32,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:32,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:32,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:32,334 INFO L124 PetriNetUnfolderBase]: 128/384 cut-off events. [2023-11-26 10:46:32,335 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-26 10:46:32,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 384 events. 128/384 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2026 event pairs, 104 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 640. Up to 258 conditions per place. [2023-11-26 10:46:32,338 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-11-26 10:46:32,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 180 flow [2023-11-26 10:46:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:46:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-26 10:46:32,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-11-26 10:46:32,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-26 10:46:32,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-26 10:46:32,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:32,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-26 10:46:32,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,343 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 124 flow. Second operand 3 states and 80 transitions. [2023-11-26 10:46:32,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 180 flow [2023-11-26 10:46:32,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 158 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-26 10:46:32,345 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 106 flow [2023-11-26 10:46:32,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-26 10:46:32,347 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2023-11-26 10:46:32,347 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 106 flow [2023-11-26 10:46:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:32,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:32,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:46:32,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:32,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:32,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1299313939, now seen corresponding path program 1 times [2023-11-26 10:46:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937821309] [2023-11-26 10:46:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937821309] [2023-11-26 10:46:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937821309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777818870] [2023-11-26 10:46:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:32,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:32,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:32,456 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:32,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:46:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:32,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:46:32,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:32,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:32,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777818870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:32,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:32,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 10:46:32,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439216020] [2023-11-26 10:46:32,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:32,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:46:32,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:46:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:46:32,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:32,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 106 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:32,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:32,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:32,834 INFO L124 PetriNetUnfolderBase]: 128/388 cut-off events. [2023-11-26 10:46:32,834 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-26 10:46:32,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 388 events. 128/388 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2023 event pairs, 104 based on Foata normal form. 2/322 useless extension candidates. Maximal degree in co-relation 633. Up to 256 conditions per place. [2023-11-26 10:46:32,838 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 26 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-11-26 10:46:32,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 187 flow [2023-11-26 10:46:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 10:46:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 10:46:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2023-11-26 10:46:32,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2023-11-26 10:46:32,842 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 154 transitions. [2023-11-26 10:46:32,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 154 transitions. [2023-11-26 10:46:32,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:32,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 154 transitions. [2023-11-26 10:46:32,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 47.0) internal successors, (376), 8 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,848 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 106 flow. Second operand 7 states and 154 transitions. [2023-11-26 10:46:32,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 187 flow [2023-11-26 10:46:32,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 173 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:32,855 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 132 flow [2023-11-26 10:46:32,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-11-26 10:46:32,858 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 8 predicate places. [2023-11-26 10:46:32,858 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 132 flow [2023-11-26 10:46:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:32,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:32,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:33,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:33,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:33,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:33,066 INFO L85 PathProgramCache]: Analyzing trace with hash 423013709, now seen corresponding path program 2 times [2023-11-26 10:46:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:33,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056132588] [2023-11-26 10:46:33,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:33,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056132588] [2023-11-26 10:46:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056132588] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547499385] [2023-11-26 10:46:33,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:46:33,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:33,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:33,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:33,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:46:33,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:46:33,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:46:33,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:46:33,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:33,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 10:46:33,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-26 10:46:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:46:33,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:33,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547499385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:33,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2023-11-26 10:46:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550402609] [2023-11-26 10:46:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:33,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:33,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:46:33,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:33,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:33,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:33,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:33,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:34,014 INFO L124 PetriNetUnfolderBase]: 244/583 cut-off events. [2023-11-26 10:46:34,014 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-26 10:46:34,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 583 events. 244/583 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2932 event pairs, 38 based on Foata normal form. 21/500 useless extension candidates. Maximal degree in co-relation 1042. Up to 310 conditions per place. [2023-11-26 10:46:34,020 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 73 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2023-11-26 10:46:34,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 402 flow [2023-11-26 10:46:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:34,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2023-11-26 10:46:34,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6524822695035462 [2023-11-26 10:46:34,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 184 transitions. [2023-11-26 10:46:34,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 184 transitions. [2023-11-26 10:46:34,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:34,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 184 transitions. [2023-11-26 10:46:34,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,028 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 132 flow. Second operand 6 states and 184 transitions. [2023-11-26 10:46:34,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 402 flow [2023-11-26 10:46:34,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 99 transitions, 398 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:34,034 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 222 flow [2023-11-26 10:46:34,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-11-26 10:46:34,035 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2023-11-26 10:46:34,035 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 222 flow [2023-11-26 10:46:34,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:34,036 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:34,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 10:46:34,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:34,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:34,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 396962436, now seen corresponding path program 1 times [2023-11-26 10:46:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658040655] [2023-11-26 10:46:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:34,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 10:46:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:34,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658040655] [2023-11-26 10:46:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658040655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:34,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:34,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64968689] [2023-11-26 10:46:34,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:34,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:46:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:34,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:46:34,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:46:34,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2023-11-26 10:46:34,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:34,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2023-11-26 10:46:34,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:34,481 INFO L124 PetriNetUnfolderBase]: 235/663 cut-off events. [2023-11-26 10:46:34,482 INFO L125 PetriNetUnfolderBase]: For 252/281 co-relation queries the response was YES. [2023-11-26 10:46:34,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 663 events. 235/663 cut-off events. For 252/281 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3571 event pairs, 89 based on Foata normal form. 9/609 useless extension candidates. Maximal degree in co-relation 1326. Up to 297 conditions per place. [2023-11-26 10:46:34,489 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 61 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-26 10:46:34,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 398 flow [2023-11-26 10:46:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:46:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 10:46:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2023-11-26 10:46:34,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2023-11-26 10:46:34,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 102 transitions. [2023-11-26 10:46:34,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 102 transitions. [2023-11-26 10:46:34,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:34,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 102 transitions. [2023-11-26 10:46:34,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,494 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 222 flow. Second operand 3 states and 102 transitions. [2023-11-26 10:46:34,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 398 flow [2023-11-26 10:46:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-26 10:46:34,500 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 216 flow [2023-11-26 10:46:34,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-26 10:46:34,501 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2023-11-26 10:46:34,502 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 216 flow [2023-11-26 10:46:34,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:34,502 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:46:34,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:34,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash 396930456, now seen corresponding path program 1 times [2023-11-26 10:46:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472594324] [2023-11-26 10:46:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:34,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472594324] [2023-11-26 10:46:34,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472594324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:34,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056492018] [2023-11-26 10:46:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:34,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:34,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:34,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:34,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:46:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:34,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:46:34,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:34,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:34,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056492018] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:34,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:34,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-11-26 10:46:34,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749485654] [2023-11-26 10:46:34,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 10:46:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 10:46:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:46:34,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:34,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 216 flow. Second operand has 18 states, 18 states have (on average 18.333333333333332) internal successors, (330), 18 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:34,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:34,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:34,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:35,255 INFO L124 PetriNetUnfolderBase]: 235/695 cut-off events. [2023-11-26 10:46:35,256 INFO L125 PetriNetUnfolderBase]: For 323/343 co-relation queries the response was YES. [2023-11-26 10:46:35,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 695 events. 235/695 cut-off events. For 323/343 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3799 event pairs, 147 based on Foata normal form. 7/649 useless extension candidates. Maximal degree in co-relation 1429. Up to 467 conditions per place. [2023-11-26 10:46:35,263 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 36 selfloop transitions, 15 changer transitions 0/68 dead transitions. [2023-11-26 10:46:35,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 366 flow [2023-11-26 10:46:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:46:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 300 transitions. [2023-11-26 10:46:35,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-11-26 10:46:35,266 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 300 transitions. [2023-11-26 10:46:35,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 300 transitions. [2023-11-26 10:46:35,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:35,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 300 transitions. [2023-11-26 10:46:35,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 20.0) internal successors, (300), 15 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:35,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:35,271 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:35,271 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 216 flow. Second operand 15 states and 300 transitions. [2023-11-26 10:46:35,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 366 flow [2023-11-26 10:46:35,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:35,277 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 311 flow [2023-11-26 10:46:35,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=311, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2023-11-26 10:46:35,278 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2023-11-26 10:46:35,278 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 311 flow [2023-11-26 10:46:35,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.333333333333332) internal successors, (330), 18 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:35,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:35,279 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:35,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:35,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:35,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:35,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1846418008, now seen corresponding path program 2 times [2023-11-26 10:46:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:35,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104828055] [2023-11-26 10:46:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:35,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:35,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104828055] [2023-11-26 10:46:35,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104828055] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:35,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526546836] [2023-11-26 10:46:35,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:46:35,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:35,893 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:35,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:46:35,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:46:35,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:46:35,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:46:35,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:36,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 10:46:36,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-11-26 10:46:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:36,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:46:36,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526546836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:36,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:46:36,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [16] total 19 [2023-11-26 10:46:36,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182577761] [2023-11-26 10:46:36,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:36,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:36,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:36,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:46:36,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:36,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:36,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:36,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:36,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:36,514 INFO L124 PetriNetUnfolderBase]: 294/783 cut-off events. [2023-11-26 10:46:36,515 INFO L125 PetriNetUnfolderBase]: For 391/418 co-relation queries the response was YES. [2023-11-26 10:46:36,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 783 events. 294/783 cut-off events. For 391/418 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4266 event pairs, 67 based on Foata normal form. 18/764 useless extension candidates. Maximal degree in co-relation 1660. Up to 459 conditions per place. [2023-11-26 10:46:36,553 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 74 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2023-11-26 10:46:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 101 transitions, 589 flow [2023-11-26 10:46:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2023-11-26 10:46:36,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2023-11-26 10:46:36,555 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 169 transitions. [2023-11-26 10:46:36,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 169 transitions. [2023-11-26 10:46:36,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:36,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 169 transitions. [2023-11-26 10:46:36,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:36,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:36,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:36,557 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 311 flow. Second operand 6 states and 169 transitions. [2023-11-26 10:46:36,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 101 transitions, 589 flow [2023-11-26 10:46:36,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 579 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-26 10:46:36,566 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 389 flow [2023-11-26 10:46:36,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2023-11-26 10:46:36,570 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 42 predicate places. [2023-11-26 10:46:36,570 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 389 flow [2023-11-26 10:46:36,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:36,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:36,571 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:36,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:36,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 10:46:36,777 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:36,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2082002742, now seen corresponding path program 1 times [2023-11-26 10:46:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:36,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985184739] [2023-11-26 10:46:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:36,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:36,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:36,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985184739] [2023-11-26 10:46:36,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985184739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:36,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:36,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:36,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703714386] [2023-11-26 10:46:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:36,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:36,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:36,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:36,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:36,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:36,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:36,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:37,258 INFO L124 PetriNetUnfolderBase]: 284/775 cut-off events. [2023-11-26 10:46:37,259 INFO L125 PetriNetUnfolderBase]: For 706/727 co-relation queries the response was YES. [2023-11-26 10:46:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 775 events. 284/775 cut-off events. For 706/727 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4282 event pairs, 90 based on Foata normal form. 27/764 useless extension candidates. Maximal degree in co-relation 1849. Up to 499 conditions per place. [2023-11-26 10:46:37,268 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 76 selfloop transitions, 10 changer transitions 0/101 dead transitions. [2023-11-26 10:46:37,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 101 transitions, 649 flow [2023-11-26 10:46:37,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2023-11-26 10:46:37,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2023-11-26 10:46:37,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 169 transitions. [2023-11-26 10:46:37,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 169 transitions. [2023-11-26 10:46:37,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:37,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 169 transitions. [2023-11-26 10:46:37,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,274 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 389 flow. Second operand 6 states and 169 transitions. [2023-11-26 10:46:37,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 101 transitions, 649 flow [2023-11-26 10:46:37,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 101 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:37,284 INFO L231 Difference]: Finished difference. Result has 93 places, 74 transitions, 397 flow [2023-11-26 10:46:37,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=397, PETRI_PLACES=93, PETRI_TRANSITIONS=74} [2023-11-26 10:46:37,285 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-11-26 10:46:37,286 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 74 transitions, 397 flow [2023-11-26 10:46:37,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:37,286 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 10:46:37,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:37,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:37,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1404383672, now seen corresponding path program 1 times [2023-11-26 10:46:37,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:37,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384043256] [2023-11-26 10:46:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:37,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:37,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:37,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384043256] [2023-11-26 10:46:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384043256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:37,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:37,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:37,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727366363] [2023-11-26 10:46:37,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:37,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:46:37,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:37,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:46:37,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:46:37,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:37,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 74 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:37,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:37,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:37,844 INFO L124 PetriNetUnfolderBase]: 280/761 cut-off events. [2023-11-26 10:46:37,844 INFO L125 PetriNetUnfolderBase]: For 660/669 co-relation queries the response was YES. [2023-11-26 10:46:37,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 761 events. 280/761 cut-off events. For 660/669 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4161 event pairs, 77 based on Foata normal form. 16/741 useless extension candidates. Maximal degree in co-relation 1826. Up to 495 conditions per place. [2023-11-26 10:46:37,853 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 71 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2023-11-26 10:46:37,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 635 flow [2023-11-26 10:46:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:46:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 10:46:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2023-11-26 10:46:37,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2023-11-26 10:46:37,855 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 166 transitions. [2023-11-26 10:46:37,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 166 transitions. [2023-11-26 10:46:37,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:37,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 166 transitions. [2023-11-26 10:46:37,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,858 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,858 INFO L175 Difference]: Start difference. First operand has 93 places, 74 transitions, 397 flow. Second operand 6 states and 166 transitions. [2023-11-26 10:46:37,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 635 flow [2023-11-26 10:46:37,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 96 transitions, 600 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 10:46:37,866 INFO L231 Difference]: Finished difference. Result has 93 places, 73 transitions, 388 flow [2023-11-26 10:46:37,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=388, PETRI_PLACES=93, PETRI_TRANSITIONS=73} [2023-11-26 10:46:37,867 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-11-26 10:46:37,867 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 73 transitions, 388 flow [2023-11-26 10:46:37,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:37,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:37,868 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:37,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:46:37,869 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:37,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1320655536, now seen corresponding path program 1 times [2023-11-26 10:46:37,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:37,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040096001] [2023-11-26 10:46:37,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:37,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,007 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:38,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:38,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040096001] [2023-11-26 10:46:38,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040096001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:38,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:38,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857472016] [2023-11-26 10:46:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:38,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:38,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:38,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:38,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 73 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:38,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:38,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:38,334 INFO L124 PetriNetUnfolderBase]: 415/1104 cut-off events. [2023-11-26 10:46:38,334 INFO L125 PetriNetUnfolderBase]: For 738/760 co-relation queries the response was YES. [2023-11-26 10:46:38,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2665 conditions, 1104 events. 415/1104 cut-off events. For 738/760 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6297 event pairs, 211 based on Foata normal form. 43/1093 useless extension candidates. Maximal degree in co-relation 2558. Up to 506 conditions per place. [2023-11-26 10:46:38,346 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 100 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-11-26 10:46:38,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 764 flow [2023-11-26 10:46:38,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:38,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2023-11-26 10:46:38,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2023-11-26 10:46:38,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2023-11-26 10:46:38,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2023-11-26 10:46:38,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:38,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2023-11-26 10:46:38,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,350 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,351 INFO L175 Difference]: Start difference. First operand has 93 places, 73 transitions, 388 flow. Second operand 4 states and 136 transitions. [2023-11-26 10:46:38,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 764 flow [2023-11-26 10:46:38,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 117 transitions, 731 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 10:46:38,359 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 389 flow [2023-11-26 10:46:38,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2023-11-26 10:46:38,360 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-11-26 10:46:38,361 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 389 flow [2023-11-26 10:46:38,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:38,361 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:38,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:46:38,362 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:38,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 717825875, now seen corresponding path program 1 times [2023-11-26 10:46:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718002464] [2023-11-26 10:46:38,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:38,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-26 10:46:38,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:38,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718002464] [2023-11-26 10:46:38,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718002464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:38,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:38,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:46:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845811224] [2023-11-26 10:46:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:46:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:46:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:46:38,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:38,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:38,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:38,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:38,728 INFO L124 PetriNetUnfolderBase]: 405/1088 cut-off events. [2023-11-26 10:46:38,728 INFO L125 PetriNetUnfolderBase]: For 811/822 co-relation queries the response was YES. [2023-11-26 10:46:38,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1088 events. 405/1088 cut-off events. For 811/822 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6232 event pairs, 212 based on Foata normal form. 34/1108 useless extension candidates. Maximal degree in co-relation 2686. Up to 566 conditions per place. [2023-11-26 10:46:38,741 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 92 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-11-26 10:46:38,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 109 transitions, 725 flow [2023-11-26 10:46:38,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:46:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 10:46:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-26 10:46:38,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2023-11-26 10:46:38,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-26 10:46:38,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-26 10:46:38,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:38,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-26 10:46:38,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,746 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 389 flow. Second operand 4 states and 125 transitions. [2023-11-26 10:46:38,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 109 transitions, 725 flow [2023-11-26 10:46:38,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 109 transitions, 719 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 10:46:38,756 INFO L231 Difference]: Finished difference. Result has 97 places, 76 transitions, 405 flow [2023-11-26 10:46:38,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=405, PETRI_PLACES=97, PETRI_TRANSITIONS=76} [2023-11-26 10:46:38,757 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2023-11-26 10:46:38,757 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 76 transitions, 405 flow [2023-11-26 10:46:38,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:38,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:38,758 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:38,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:46:38,758 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:38,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash -463499201, now seen corresponding path program 1 times [2023-11-26 10:46:38,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:38,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667487254] [2023-11-26 10:46:38,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:38,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667487254] [2023-11-26 10:46:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667487254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:46:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25780290] [2023-11-26 10:46:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:39,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:39,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:46:39,093 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:46:39,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:46:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:39,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:46:39,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:46:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:39,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:46:39,536 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:46:39,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25780290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:46:39,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:46:39,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2023-11-26 10:46:39,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211237533] [2023-11-26 10:46:39,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:46:39,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 10:46:39,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 10:46:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-26 10:46:39,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:46:39,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 76 transitions, 405 flow. Second operand has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:39,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:39,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:46:39,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:40,000 INFO L124 PetriNetUnfolderBase]: 371/1057 cut-off events. [2023-11-26 10:46:40,001 INFO L125 PetriNetUnfolderBase]: For 918/940 co-relation queries the response was YES. [2023-11-26 10:46:40,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 1057 events. 371/1057 cut-off events. For 918/940 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6084 event pairs, 254 based on Foata normal form. 3/1044 useless extension candidates. Maximal degree in co-relation 2652. Up to 736 conditions per place. [2023-11-26 10:46:40,012 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 45 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2023-11-26 10:46:40,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 82 transitions, 591 flow [2023-11-26 10:46:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 10:46:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-26 10:46:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 407 transitions. [2023-11-26 10:46:40,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41236068895643363 [2023-11-26 10:46:40,017 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 407 transitions. [2023-11-26 10:46:40,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 407 transitions. [2023-11-26 10:46:40,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:40,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 407 transitions. [2023-11-26 10:46:40,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 19.38095238095238) internal successors, (407), 21 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:40,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:40,022 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:40,023 INFO L175 Difference]: Start difference. First operand has 97 places, 76 transitions, 405 flow. Second operand 21 states and 407 transitions. [2023-11-26 10:46:40,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 82 transitions, 591 flow [2023-11-26 10:46:40,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 82 transitions, 587 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 10:46:40,031 INFO L231 Difference]: Finished difference. Result has 118 places, 82 transitions, 512 flow [2023-11-26 10:46:40,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=512, PETRI_PLACES=118, PETRI_TRANSITIONS=82} [2023-11-26 10:46:40,032 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-11-26 10:46:40,033 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 82 transitions, 512 flow [2023-11-26 10:46:40,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 18.52173913043478) internal successors, (426), 23 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:40,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:40,033 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:40,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:46:40,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:46:40,240 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:40,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash -751699078, now seen corresponding path program 2 times [2023-11-26 10:46:40,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:40,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453790588] [2023-11-26 10:46:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:40,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:40,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453790588] [2023-11-26 10:46:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453790588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029901835] [2023-11-26 10:46:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:40,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:40,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:40,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 82 transitions, 512 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:40,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:40,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:40,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:41,643 INFO L124 PetriNetUnfolderBase]: 652/1619 cut-off events. [2023-11-26 10:46:41,644 INFO L125 PetriNetUnfolderBase]: For 1657/1659 co-relation queries the response was YES. [2023-11-26 10:46:41,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 1619 events. 652/1619 cut-off events. For 1657/1659 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 9886 event pairs, 204 based on Foata normal form. 29/1622 useless extension candidates. Maximal degree in co-relation 4243. Up to 853 conditions per place. [2023-11-26 10:46:41,663 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 123 selfloop transitions, 39 changer transitions 0/174 dead transitions. [2023-11-26 10:46:41,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 174 transitions, 1241 flow [2023-11-26 10:46:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:46:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 351 transitions. [2023-11-26 10:46:41,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2023-11-26 10:46:41,667 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 351 transitions. [2023-11-26 10:46:41,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 351 transitions. [2023-11-26 10:46:41,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:41,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 351 transitions. [2023-11-26 10:46:41,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.4) internal successors, (351), 15 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,674 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,674 INFO L175 Difference]: Start difference. First operand has 118 places, 82 transitions, 512 flow. Second operand 15 states and 351 transitions. [2023-11-26 10:46:41,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 174 transitions, 1241 flow [2023-11-26 10:46:41,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 174 transitions, 1198 flow, removed 1 selfloop flow, removed 13 redundant places. [2023-11-26 10:46:41,689 INFO L231 Difference]: Finished difference. Result has 125 places, 110 transitions, 804 flow [2023-11-26 10:46:41,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=804, PETRI_PLACES=125, PETRI_TRANSITIONS=110} [2023-11-26 10:46:41,690 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 78 predicate places. [2023-11-26 10:46:41,691 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 110 transitions, 804 flow [2023-11-26 10:46:41,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:41,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:41,691 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 10:46:41,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:41,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:41,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1334815782, now seen corresponding path program 3 times [2023-11-26 10:46:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:41,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241288604] [2023-11-26 10:46:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:41,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241288604] [2023-11-26 10:46:42,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241288604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:42,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440987557] [2023-11-26 10:46:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:42,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:42,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:42,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:42,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 110 transitions, 804 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:42,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:42,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:42,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:43,127 INFO L124 PetriNetUnfolderBase]: 780/1902 cut-off events. [2023-11-26 10:46:43,127 INFO L125 PetriNetUnfolderBase]: For 4513/4519 co-relation queries the response was YES. [2023-11-26 10:46:43,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 1902 events. 780/1902 cut-off events. For 4513/4519 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12162 event pairs, 246 based on Foata normal form. 31/1900 useless extension candidates. Maximal degree in co-relation 5851. Up to 875 conditions per place. [2023-11-26 10:46:43,151 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 121 selfloop transitions, 56 changer transitions 0/189 dead transitions. [2023-11-26 10:46:43,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 189 transitions, 1536 flow [2023-11-26 10:46:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:46:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:46:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 362 transitions. [2023-11-26 10:46:43,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2023-11-26 10:46:43,156 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 362 transitions. [2023-11-26 10:46:43,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 362 transitions. [2023-11-26 10:46:43,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:43,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 362 transitions. [2023-11-26 10:46:43,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 22.625) internal successors, (362), 16 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,161 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,161 INFO L175 Difference]: Start difference. First operand has 125 places, 110 transitions, 804 flow. Second operand 16 states and 362 transitions. [2023-11-26 10:46:43,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 189 transitions, 1536 flow [2023-11-26 10:46:43,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 189 transitions, 1491 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-26 10:46:43,190 INFO L231 Difference]: Finished difference. Result has 140 places, 127 transitions, 1101 flow [2023-11-26 10:46:43,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1101, PETRI_PLACES=140, PETRI_TRANSITIONS=127} [2023-11-26 10:46:43,192 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 93 predicate places. [2023-11-26 10:46:43,192 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 127 transitions, 1101 flow [2023-11-26 10:46:43,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:43,193 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:43,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:46:43,193 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:43,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:43,194 INFO L85 PathProgramCache]: Analyzing trace with hash 181349213, now seen corresponding path program 1 times [2023-11-26 10:46:43,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:43,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47885475] [2023-11-26 10:46:43,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:43,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47885475] [2023-11-26 10:46:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47885475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33661260] [2023-11-26 10:46:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:43,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:43,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:43,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 127 transitions, 1101 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:43,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:43,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:43,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:44,552 INFO L124 PetriNetUnfolderBase]: 876/2110 cut-off events. [2023-11-26 10:46:44,552 INFO L125 PetriNetUnfolderBase]: For 8730/8732 co-relation queries the response was YES. [2023-11-26 10:46:44,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 2110 events. 876/2110 cut-off events. For 8730/8732 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 13892 event pairs, 263 based on Foata normal form. 20/2093 useless extension candidates. Maximal degree in co-relation 7446. Up to 1295 conditions per place. [2023-11-26 10:46:44,579 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 152 selfloop transitions, 47 changer transitions 0/211 dead transitions. [2023-11-26 10:46:44,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 211 transitions, 2130 flow [2023-11-26 10:46:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:46:44,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 10:46:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 286 transitions. [2023-11-26 10:46:44,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2023-11-26 10:46:44,582 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 286 transitions. [2023-11-26 10:46:44,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 286 transitions. [2023-11-26 10:46:44,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:44,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 286 transitions. [2023-11-26 10:46:44,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 23.833333333333332) internal successors, (286), 12 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:44,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 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) [2023-11-26 10:46:44,585 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 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) [2023-11-26 10:46:44,585 INFO L175 Difference]: Start difference. First operand has 140 places, 127 transitions, 1101 flow. Second operand 12 states and 286 transitions. [2023-11-26 10:46:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 211 transitions, 2130 flow [2023-11-26 10:46:44,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 211 transitions, 2058 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-11-26 10:46:44,622 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 1380 flow [2023-11-26 10:46:44,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1380, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2023-11-26 10:46:44,623 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 102 predicate places. [2023-11-26 10:46:44,623 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 1380 flow [2023-11-26 10:46:44,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:44,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:44,624 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:44,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:46:44,624 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:44,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1451980902, now seen corresponding path program 4 times [2023-11-26 10:46:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:44,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120881997] [2023-11-26 10:46:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120881997] [2023-11-26 10:46:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120881997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:45,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900904378] [2023-11-26 10:46:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:45,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:45,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:45,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 144 transitions, 1380 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:45,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:45,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:46,123 INFO L124 PetriNetUnfolderBase]: 1138/2646 cut-off events. [2023-11-26 10:46:46,124 INFO L125 PetriNetUnfolderBase]: For 14673/14702 co-relation queries the response was YES. [2023-11-26 10:46:46,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10301 conditions, 2646 events. 1138/2646 cut-off events. For 14673/14702 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 17992 event pairs, 114 based on Foata normal form. 72/2684 useless extension candidates. Maximal degree in co-relation 10132. Up to 979 conditions per place. [2023-11-26 10:46:46,159 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 165 selfloop transitions, 100 changer transitions 0/277 dead transitions. [2023-11-26 10:46:46,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 277 transitions, 2812 flow [2023-11-26 10:46:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:46:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:46:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 392 transitions. [2023-11-26 10:46:46,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2023-11-26 10:46:46,162 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 392 transitions. [2023-11-26 10:46:46,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 392 transitions. [2023-11-26 10:46:46,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:46,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 392 transitions. [2023-11-26 10:46:46,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 24.5) internal successors, (392), 16 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:46,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:46,166 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:46,166 INFO L175 Difference]: Start difference. First operand has 149 places, 144 transitions, 1380 flow. Second operand 16 states and 392 transitions. [2023-11-26 10:46:46,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 277 transitions, 2812 flow [2023-11-26 10:46:46,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 277 transitions, 2704 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-11-26 10:46:46,230 INFO L231 Difference]: Finished difference. Result has 163 places, 180 transitions, 2102 flow [2023-11-26 10:46:46,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2102, PETRI_PLACES=163, PETRI_TRANSITIONS=180} [2023-11-26 10:46:46,230 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 116 predicate places. [2023-11-26 10:46:46,231 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 180 transitions, 2102 flow [2023-11-26 10:46:46,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:46,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:46,231 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:46,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 10:46:46,232 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:46,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:46,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1785717283, now seen corresponding path program 2 times [2023-11-26 10:46:46,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:46,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096876503] [2023-11-26 10:46:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:46,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:46,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096876503] [2023-11-26 10:46:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096876503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:46,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:46,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:46,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445595739] [2023-11-26 10:46:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:46,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:46,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:46,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 180 transitions, 2102 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:46,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:46,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:46,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:47,861 INFO L124 PetriNetUnfolderBase]: 1270/2882 cut-off events. [2023-11-26 10:46:47,862 INFO L125 PetriNetUnfolderBase]: For 22151/22162 co-relation queries the response was YES. [2023-11-26 10:46:47,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12754 conditions, 2882 events. 1270/2882 cut-off events. For 22151/22162 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 19728 event pairs, 374 based on Foata normal form. 23/2870 useless extension candidates. Maximal degree in co-relation 12580. Up to 1878 conditions per place. [2023-11-26 10:46:47,903 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 203 selfloop transitions, 73 changer transitions 0/288 dead transitions. [2023-11-26 10:46:47,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 288 transitions, 3783 flow [2023-11-26 10:46:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:46:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 337 transitions. [2023-11-26 10:46:47,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47801418439716314 [2023-11-26 10:46:47,905 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 337 transitions. [2023-11-26 10:46:47,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 337 transitions. [2023-11-26 10:46:47,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:47,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 337 transitions. [2023-11-26 10:46:47,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.466666666666665) internal successors, (337), 15 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:47,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:47,909 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:47,910 INFO L175 Difference]: Start difference. First operand has 163 places, 180 transitions, 2102 flow. Second operand 15 states and 337 transitions. [2023-11-26 10:46:47,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 288 transitions, 3783 flow [2023-11-26 10:46:48,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 288 transitions, 3594 flow, removed 68 selfloop flow, removed 9 redundant places. [2023-11-26 10:46:48,024 INFO L231 Difference]: Finished difference. Result has 172 places, 208 transitions, 2628 flow [2023-11-26 10:46:48,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2628, PETRI_PLACES=172, PETRI_TRANSITIONS=208} [2023-11-26 10:46:48,025 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 125 predicate places. [2023-11-26 10:46:48,025 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 208 transitions, 2628 flow [2023-11-26 10:46:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:48,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:48,026 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:48,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 10:46:48,027 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:48,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:48,027 INFO L85 PathProgramCache]: Analyzing trace with hash -460604211, now seen corresponding path program 3 times [2023-11-26 10:46:48,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:48,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470800967] [2023-11-26 10:46:48,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:48,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:48,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470800967] [2023-11-26 10:46:48,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470800967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:48,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:48,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579650353] [2023-11-26 10:46:48,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:48,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:48,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:48,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 208 transitions, 2628 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:48,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:48,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:48,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:50,057 INFO L124 PetriNetUnfolderBase]: 1360/3082 cut-off events. [2023-11-26 10:46:50,058 INFO L125 PetriNetUnfolderBase]: For 27944/27952 co-relation queries the response was YES. [2023-11-26 10:46:50,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14355 conditions, 3082 events. 1360/3082 cut-off events. For 27944/27952 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21462 event pairs, 395 based on Foata normal form. 23/3069 useless extension candidates. Maximal degree in co-relation 14176. Up to 1778 conditions per place. [2023-11-26 10:46:50,112 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 187 selfloop transitions, 104 changer transitions 0/303 dead transitions. [2023-11-26 10:46:50,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 303 transitions, 4154 flow [2023-11-26 10:46:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:46:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:46:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 348 transitions. [2023-11-26 10:46:50,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2023-11-26 10:46:50,115 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 348 transitions. [2023-11-26 10:46:50,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 348 transitions. [2023-11-26 10:46:50,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:50,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 348 transitions. [2023-11-26 10:46:50,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.75) internal successors, (348), 16 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:50,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:50,120 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:50,120 INFO L175 Difference]: Start difference. First operand has 172 places, 208 transitions, 2628 flow. Second operand 16 states and 348 transitions. [2023-11-26 10:46:50,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 303 transitions, 4154 flow [2023-11-26 10:46:50,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 303 transitions, 4051 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-26 10:46:50,273 INFO L231 Difference]: Finished difference. Result has 182 places, 223 transitions, 3147 flow [2023-11-26 10:46:50,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2529, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3147, PETRI_PLACES=182, PETRI_TRANSITIONS=223} [2023-11-26 10:46:50,275 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 135 predicate places. [2023-11-26 10:46:50,275 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 223 transitions, 3147 flow [2023-11-26 10:46:50,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:50,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:50,276 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:50,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 10:46:50,276 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:50,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash 788542029, now seen corresponding path program 4 times [2023-11-26 10:46:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:50,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931560172] [2023-11-26 10:46:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:50,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:50,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:50,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931560172] [2023-11-26 10:46:50,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931560172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:50,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:50,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927850834] [2023-11-26 10:46:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:50,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:50,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:50,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 223 transitions, 3147 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:50,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:50,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:50,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:52,565 INFO L124 PetriNetUnfolderBase]: 1469/3340 cut-off events. [2023-11-26 10:46:52,565 INFO L125 PetriNetUnfolderBase]: For 37311/37314 co-relation queries the response was YES. [2023-11-26 10:46:52,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16367 conditions, 3340 events. 1469/3340 cut-off events. For 37311/37314 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 23573 event pairs, 214 based on Foata normal form. 54/3362 useless extension candidates. Maximal degree in co-relation 16184. Up to 1443 conditions per place. [2023-11-26 10:46:52,626 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 180 selfloop transitions, 154 changer transitions 0/346 dead transitions. [2023-11-26 10:46:52,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 346 transitions, 4988 flow [2023-11-26 10:46:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:46:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:46:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 373 transitions. [2023-11-26 10:46:52,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49601063829787234 [2023-11-26 10:46:52,629 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 373 transitions. [2023-11-26 10:46:52,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 373 transitions. [2023-11-26 10:46:52,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:52,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 373 transitions. [2023-11-26 10:46:52,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 23.3125) internal successors, (373), 16 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:52,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:52,637 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:52,637 INFO L175 Difference]: Start difference. First operand has 182 places, 223 transitions, 3147 flow. Second operand 16 states and 373 transitions. [2023-11-26 10:46:52,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 346 transitions, 4988 flow [2023-11-26 10:46:52,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 346 transitions, 4894 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-11-26 10:46:52,824 INFO L231 Difference]: Finished difference. Result has 191 places, 249 transitions, 4071 flow [2023-11-26 10:46:52,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4071, PETRI_PLACES=191, PETRI_TRANSITIONS=249} [2023-11-26 10:46:52,825 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 144 predicate places. [2023-11-26 10:46:52,826 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 249 transitions, 4071 flow [2023-11-26 10:46:52,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:52,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:52,826 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:52,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 10:46:52,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:52,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:52,828 INFO L85 PathProgramCache]: Analyzing trace with hash 631232289, now seen corresponding path program 1 times [2023-11-26 10:46:52,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:52,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974617242] [2023-11-26 10:46:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:53,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974617242] [2023-11-26 10:46:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974617242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:53,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:53,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673268245] [2023-11-26 10:46:53,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:53,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:53,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:53,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:53,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:53,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 249 transitions, 4071 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:53,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:53,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:53,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:55,054 INFO L124 PetriNetUnfolderBase]: 1440/3258 cut-off events. [2023-11-26 10:46:55,054 INFO L125 PetriNetUnfolderBase]: For 46263/46308 co-relation queries the response was YES. [2023-11-26 10:46:55,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17558 conditions, 3258 events. 1440/3258 cut-off events. For 46263/46308 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 22890 event pairs, 487 based on Foata normal form. 38/3253 useless extension candidates. Maximal degree in co-relation 17368. Up to 2438 conditions per place. [2023-11-26 10:46:55,125 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 259 selfloop transitions, 55 changer transitions 0/326 dead transitions. [2023-11-26 10:46:55,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 326 transitions, 5470 flow [2023-11-26 10:46:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:46:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:46:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 342 transitions. [2023-11-26 10:46:55,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2023-11-26 10:46:55,128 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 342 transitions. [2023-11-26 10:46:55,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 342 transitions. [2023-11-26 10:46:55,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:55,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 342 transitions. [2023-11-26 10:46:55,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.8) internal successors, (342), 15 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:55,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:55,138 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:55,139 INFO L175 Difference]: Start difference. First operand has 191 places, 249 transitions, 4071 flow. Second operand 15 states and 342 transitions. [2023-11-26 10:46:55,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 326 transitions, 5470 flow [2023-11-26 10:46:55,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 326 transitions, 5288 flow, removed 54 selfloop flow, removed 10 redundant places. [2023-11-26 10:46:55,407 INFO L231 Difference]: Finished difference. Result has 196 places, 249 transitions, 4050 flow [2023-11-26 10:46:55,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4050, PETRI_PLACES=196, PETRI_TRANSITIONS=249} [2023-11-26 10:46:55,408 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 149 predicate places. [2023-11-26 10:46:55,409 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 249 transitions, 4050 flow [2023-11-26 10:46:55,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:55,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:55,409 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:55,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 10:46:55,410 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:55,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:55,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1326858579, now seen corresponding path program 1 times [2023-11-26 10:46:55,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:55,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471232134] [2023-11-26 10:46:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:55,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:55,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471232134] [2023-11-26 10:46:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471232134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:55,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:55,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220887006] [2023-11-26 10:46:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:55,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:55,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:55,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:55,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 249 transitions, 4050 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:55,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:55,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:55,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:57,338 INFO L124 PetriNetUnfolderBase]: 1419/3230 cut-off events. [2023-11-26 10:46:57,339 INFO L125 PetriNetUnfolderBase]: For 43819/43840 co-relation queries the response was YES. [2023-11-26 10:46:57,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17030 conditions, 3230 events. 1419/3230 cut-off events. For 43819/43840 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 22697 event pairs, 518 based on Foata normal form. 23/3217 useless extension candidates. Maximal degree in co-relation 16839. Up to 2458 conditions per place. [2023-11-26 10:46:57,392 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 232 selfloop transitions, 61 changer transitions 0/305 dead transitions. [2023-11-26 10:46:57,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 305 transitions, 5114 flow [2023-11-26 10:46:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:46:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-26 10:46:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 279 transitions. [2023-11-26 10:46:57,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2023-11-26 10:46:57,395 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 279 transitions. [2023-11-26 10:46:57,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 279 transitions. [2023-11-26 10:46:57,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:57,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 279 transitions. [2023-11-26 10:46:57,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 23.25) internal successors, (279), 12 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:57,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 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) [2023-11-26 10:46:57,399 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 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) [2023-11-26 10:46:57,399 INFO L175 Difference]: Start difference. First operand has 196 places, 249 transitions, 4050 flow. Second operand 12 states and 279 transitions. [2023-11-26 10:46:57,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 305 transitions, 5114 flow [2023-11-26 10:46:57,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 305 transitions, 5006 flow, removed 5 selfloop flow, removed 13 redundant places. [2023-11-26 10:46:57,604 INFO L231 Difference]: Finished difference. Result has 194 places, 248 transitions, 4057 flow [2023-11-26 10:46:57,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3935, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4057, PETRI_PLACES=194, PETRI_TRANSITIONS=248} [2023-11-26 10:46:57,605 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 147 predicate places. [2023-11-26 10:46:57,605 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 248 transitions, 4057 flow [2023-11-26 10:46:57,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:57,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:57,606 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:57,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 10:46:57,606 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:57,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1144767711, now seen corresponding path program 2 times [2023-11-26 10:46:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:57,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550920540] [2023-11-26 10:46:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:46:57,974 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:46:57,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:46:57,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550920540] [2023-11-26 10:46:57,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550920540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:46:57,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:46:57,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:46:57,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893506106] [2023-11-26 10:46:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:46:57,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:46:57,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:46:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:46:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:46:58,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:46:58,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 248 transitions, 4057 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:58,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:46:58,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:46:58,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:46:59,377 INFO L124 PetriNetUnfolderBase]: 1390/3188 cut-off events. [2023-11-26 10:46:59,377 INFO L125 PetriNetUnfolderBase]: For 42889/42945 co-relation queries the response was YES. [2023-11-26 10:46:59,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 3188 events. 1390/3188 cut-off events. For 42889/42945 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 22488 event pairs, 452 based on Foata normal form. 44/3191 useless extension candidates. Maximal degree in co-relation 16481. Up to 2294 conditions per place. [2023-11-26 10:46:59,423 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 233 selfloop transitions, 72 changer transitions 0/317 dead transitions. [2023-11-26 10:46:59,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 317 transitions, 5292 flow [2023-11-26 10:46:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:46:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:46:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 353 transitions. [2023-11-26 10:46:59,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46941489361702127 [2023-11-26 10:46:59,426 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 353 transitions. [2023-11-26 10:46:59,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 353 transitions. [2023-11-26 10:46:59,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:46:59,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 353 transitions. [2023-11-26 10:46:59,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 22.0625) internal successors, (353), 16 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:59,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:59,430 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:59,431 INFO L175 Difference]: Start difference. First operand has 194 places, 248 transitions, 4057 flow. Second operand 16 states and 353 transitions. [2023-11-26 10:46:59,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 317 transitions, 5292 flow [2023-11-26 10:46:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 317 transitions, 5199 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-26 10:46:59,663 INFO L231 Difference]: Finished difference. Result has 200 places, 247 transitions, 4100 flow [2023-11-26 10:46:59,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4100, PETRI_PLACES=200, PETRI_TRANSITIONS=247} [2023-11-26 10:46:59,665 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 153 predicate places. [2023-11-26 10:46:59,665 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 247 transitions, 4100 flow [2023-11-26 10:46:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:46:59,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:46:59,666 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:46:59,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 10:46:59,666 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:46:59,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:46:59,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2061734691, now seen corresponding path program 3 times [2023-11-26 10:46:59,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:46:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69566720] [2023-11-26 10:46:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:46:59,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:46:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69566720] [2023-11-26 10:47:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69566720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:00,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:00,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027553496] [2023-11-26 10:47:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:47:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:47:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:00,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:47:00,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 247 transitions, 4100 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:00,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:00,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:47:00,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:01,672 INFO L124 PetriNetUnfolderBase]: 1361/3120 cut-off events. [2023-11-26 10:47:01,672 INFO L125 PetriNetUnfolderBase]: For 42709/42769 co-relation queries the response was YES. [2023-11-26 10:47:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16437 conditions, 3120 events. 1361/3120 cut-off events. For 42709/42769 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 21896 event pairs, 382 based on Foata normal form. 46/3130 useless extension candidates. Maximal degree in co-relation 16248. Up to 2139 conditions per place. [2023-11-26 10:47:01,716 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 237 selfloop transitions, 86 changer transitions 0/335 dead transitions. [2023-11-26 10:47:01,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 335 transitions, 5574 flow [2023-11-26 10:47:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:47:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:47:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 347 transitions. [2023-11-26 10:47:01,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921985815602837 [2023-11-26 10:47:01,720 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 347 transitions. [2023-11-26 10:47:01,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 347 transitions. [2023-11-26 10:47:01,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:01,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 347 transitions. [2023-11-26 10:47:01,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.133333333333333) internal successors, (347), 15 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,725 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,726 INFO L175 Difference]: Start difference. First operand has 200 places, 247 transitions, 4100 flow. Second operand 15 states and 347 transitions. [2023-11-26 10:47:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 335 transitions, 5574 flow [2023-11-26 10:47:01,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 335 transitions, 5460 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-11-26 10:47:01,964 INFO L231 Difference]: Finished difference. Result has 205 places, 256 transitions, 4399 flow [2023-11-26 10:47:01,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4399, PETRI_PLACES=205, PETRI_TRANSITIONS=256} [2023-11-26 10:47:01,966 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 158 predicate places. [2023-11-26 10:47:01,966 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 256 transitions, 4399 flow [2023-11-26 10:47:01,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:01,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:01,967 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:01,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 10:47:01,968 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:47:01,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:01,968 INFO L85 PathProgramCache]: Analyzing trace with hash 477339347, now seen corresponding path program 2 times [2023-11-26 10:47:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:01,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403524804] [2023-11-26 10:47:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:01,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:02,387 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:02,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:02,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403524804] [2023-11-26 10:47:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403524804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:02,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:02,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:02,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578258941] [2023-11-26 10:47:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:47:02,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:02,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:47:02,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:02,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:47:02,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 256 transitions, 4399 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:02,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:02,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:47:02,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:03,745 INFO L124 PetriNetUnfolderBase]: 1340/3105 cut-off events. [2023-11-26 10:47:03,745 INFO L125 PetriNetUnfolderBase]: For 44984/45005 co-relation queries the response was YES. [2023-11-26 10:47:03,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16851 conditions, 3105 events. 1340/3105 cut-off events. For 44984/45005 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 21823 event pairs, 485 based on Foata normal form. 23/3094 useless extension candidates. Maximal degree in co-relation 16658. Up to 2350 conditions per place. [2023-11-26 10:47:03,778 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 241 selfloop transitions, 61 changer transitions 0/314 dead transitions. [2023-11-26 10:47:03,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 314 transitions, 5534 flow [2023-11-26 10:47:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:47:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:47:03,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 331 transitions. [2023-11-26 10:47:03,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695035460992908 [2023-11-26 10:47:03,786 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 331 transitions. [2023-11-26 10:47:03,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 331 transitions. [2023-11-26 10:47:03,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:03,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 331 transitions. [2023-11-26 10:47:03,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.066666666666666) internal successors, (331), 15 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:03,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:03,793 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:03,793 INFO L175 Difference]: Start difference. First operand has 205 places, 256 transitions, 4399 flow. Second operand 15 states and 331 transitions. [2023-11-26 10:47:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 314 transitions, 5534 flow [2023-11-26 10:47:03,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 314 transitions, 5410 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-11-26 10:47:04,004 INFO L231 Difference]: Finished difference. Result has 208 places, 255 transitions, 4393 flow [2023-11-26 10:47:04,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4271, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4393, PETRI_PLACES=208, PETRI_TRANSITIONS=255} [2023-11-26 10:47:04,005 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 161 predicate places. [2023-11-26 10:47:04,005 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 255 transitions, 4393 flow [2023-11-26 10:47:04,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:04,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:04,006 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:04,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 10:47:04,007 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:47:04,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1393828381, now seen corresponding path program 3 times [2023-11-26 10:47:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:04,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160038718] [2023-11-26 10:47:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:04,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:04,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160038718] [2023-11-26 10:47:04,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160038718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:04,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:04,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184923725] [2023-11-26 10:47:04,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:47:04,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:47:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:04,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:47:04,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 255 transitions, 4393 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:04,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:04,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:47:04,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:05,745 INFO L124 PetriNetUnfolderBase]: 1319/3098 cut-off events. [2023-11-26 10:47:05,745 INFO L125 PetriNetUnfolderBase]: For 44757/44772 co-relation queries the response was YES. [2023-11-26 10:47:05,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16617 conditions, 3098 events. 1319/3098 cut-off events. For 44757/44772 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21966 event pairs, 457 based on Foata normal form. 23/3087 useless extension candidates. Maximal degree in co-relation 16425. Up to 2206 conditions per place. [2023-11-26 10:47:05,779 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 208 selfloop transitions, 87 changer transitions 0/307 dead transitions. [2023-11-26 10:47:05,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 307 transitions, 5426 flow [2023-11-26 10:47:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:47:05,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-26 10:47:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 342 transitions. [2023-11-26 10:47:05,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2023-11-26 10:47:05,782 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 342 transitions. [2023-11-26 10:47:05,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 342 transitions. [2023-11-26 10:47:05,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:05,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 342 transitions. [2023-11-26 10:47:05,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 21.375) internal successors, (342), 16 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:05,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:05,786 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 47.0) internal successors, (799), 17 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:05,787 INFO L175 Difference]: Start difference. First operand has 208 places, 255 transitions, 4393 flow. Second operand 16 states and 342 transitions. [2023-11-26 10:47:05,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 307 transitions, 5426 flow [2023-11-26 10:47:05,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 307 transitions, 5320 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-26 10:47:05,982 INFO L231 Difference]: Finished difference. Result has 210 places, 254 transitions, 4450 flow [2023-11-26 10:47:05,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4450, PETRI_PLACES=210, PETRI_TRANSITIONS=254} [2023-11-26 10:47:05,983 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 163 predicate places. [2023-11-26 10:47:05,984 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 254 transitions, 4450 flow [2023-11-26 10:47:05,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:05,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:05,984 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:05,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 10:47:05,984 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:47:05,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:05,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1325000605, now seen corresponding path program 4 times [2023-11-26 10:47:05,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:05,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087626278] [2023-11-26 10:47:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:05,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087626278] [2023-11-26 10:47:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087626278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:06,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:06,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 10:47:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14687186] [2023-11-26 10:47:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:06,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 10:47:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 10:47:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-26 10:47:06,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2023-11-26 10:47:06,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 254 transitions, 4450 flow. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:06,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:06,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2023-11-26 10:47:06,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:07,553 INFO L124 PetriNetUnfolderBase]: 1298/3062 cut-off events. [2023-11-26 10:47:07,553 INFO L125 PetriNetUnfolderBase]: For 43980/43992 co-relation queries the response was YES. [2023-11-26 10:47:07,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16469 conditions, 3062 events. 1298/3062 cut-off events. For 43980/43992 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21730 event pairs, 393 based on Foata normal form. 23/3052 useless extension candidates. Maximal degree in co-relation 16278. Up to 2085 conditions per place. [2023-11-26 10:47:07,576 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 205 selfloop transitions, 100 changer transitions 0/317 dead transitions. [2023-11-26 10:47:07,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 317 transitions, 5628 flow [2023-11-26 10:47:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:47:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-26 10:47:07,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 333 transitions. [2023-11-26 10:47:07,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2023-11-26 10:47:07,578 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 333 transitions. [2023-11-26 10:47:07,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 333 transitions. [2023-11-26 10:47:07,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:07,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 333 transitions. [2023-11-26 10:47:07,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 22.2) internal successors, (333), 15 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:07,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:07,582 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 47.0) internal successors, (752), 16 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:07,582 INFO L175 Difference]: Start difference. First operand has 210 places, 254 transitions, 4450 flow. Second operand 15 states and 333 transitions. [2023-11-26 10:47:07,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 317 transitions, 5628 flow [2023-11-26 10:47:07,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 317 transitions, 5455 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-11-26 10:47:07,734 INFO L231 Difference]: Finished difference. Result has 214 places, 259 transitions, 4655 flow [2023-11-26 10:47:07,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4277, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4655, PETRI_PLACES=214, PETRI_TRANSITIONS=259} [2023-11-26 10:47:07,735 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 167 predicate places. [2023-11-26 10:47:07,735 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 259 transitions, 4655 flow [2023-11-26 10:47:07,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:07,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:07,736 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:07,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-26 10:47:07,736 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:47:07,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash -844624582, now seen corresponding path program 1 times [2023-11-26 10:47:07,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:07,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166583638] [2023-11-26 10:47:07,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:07,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:07,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:07,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166583638] [2023-11-26 10:47:07,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166583638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:07,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871598821] [2023-11-26 10:47:07,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:07,814 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:07,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:47:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:07,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:47:07,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:07,987 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:07,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:08,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871598821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:08,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:08,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-26 10:47:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523220770] [2023-11-26 10:47:08,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:08,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 10:47:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 10:47:08,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:47:08,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-26 10:47:08,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 259 transitions, 4655 flow. Second operand has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:08,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 10:47:08,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-26 10:47:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 10:47:09,309 INFO L124 PetriNetUnfolderBase]: 1289/3178 cut-off events. [2023-11-26 10:47:09,309 INFO L125 PetriNetUnfolderBase]: For 45055/45248 co-relation queries the response was YES. [2023-11-26 10:47:09,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17132 conditions, 3178 events. 1289/3178 cut-off events. For 45055/45248 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21372 event pairs, 314 based on Foata normal form. 202/3355 useless extension candidates. Maximal degree in co-relation 16938. Up to 819 conditions per place. [2023-11-26 10:47:09,348 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 387 selfloop transitions, 16 changer transitions 0/419 dead transitions. [2023-11-26 10:47:09,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 419 transitions, 7162 flow [2023-11-26 10:47:09,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 10:47:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 10:47:09,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 265 transitions. [2023-11-26 10:47:09,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264775413711584 [2023-11-26 10:47:09,351 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 265 transitions. [2023-11-26 10:47:09,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 265 transitions. [2023-11-26 10:47:09,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:09,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 265 transitions. [2023-11-26 10:47:09,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 29.444444444444443) internal successors, (265), 9 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:09,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:09,354 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:09,354 INFO L175 Difference]: Start difference. First operand has 214 places, 259 transitions, 4655 flow. Second operand 9 states and 265 transitions. [2023-11-26 10:47:09,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 419 transitions, 7162 flow [2023-11-26 10:47:09,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 419 transitions, 7036 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-11-26 10:47:09,602 INFO L231 Difference]: Finished difference. Result has 215 places, 254 transitions, 4426 flow [2023-11-26 10:47:09,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4350, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4426, PETRI_PLACES=215, PETRI_TRANSITIONS=254} [2023-11-26 10:47:09,603 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 168 predicate places. [2023-11-26 10:47:09,603 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 254 transitions, 4426 flow [2023-11-26 10:47:09,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.3) internal successors, (203), 10 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:09,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 10:47:09,604 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:09,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-26 10:47:09,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 10:47:09,811 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-26 10:47:09,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash -414549374, now seen corresponding path program 1 times [2023-11-26 10:47:09,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:09,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756344159] [2023-11-26 10:47:09,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:09,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:47:10,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756344159] [2023-11-26 10:47:10,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756344159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:10,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038699498] [2023-11-26 10:47:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:10,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:10,321 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:10,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81b59fcc-6957-425a-a136-073907afb8c3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:47:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:10,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-26 10:47:10,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:10,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-26 10:47:10,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17