./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4fc63b2a 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_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU --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 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:15:19,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:15:19,546 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-31 22:15:19,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:15:19,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:15:19,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:15:19,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:15:19,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:15:19,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:15:19,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:15:19,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:15:19,609 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:15:19,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:15:19,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:15:19,611 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:15:19,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:15:19,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:15:19,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:15:19,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:15:19,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:15:19,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:15:19,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:15:19,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:15:19,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:15:19,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:15:19,617 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-31 22:15:19,618 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:15:19,618 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:15:19,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:15:19,619 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:15:19,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:15:19,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:15:19,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:15:19,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:15:19,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:19,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:15:19,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:15:19,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:15:19,624 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:15:19,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:15:19,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:15:19,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:15:19,627 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:15:19,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:15:19,628 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_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-10-31 22:15:19,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:15:20,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:15:20,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:15:20,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:15:20,011 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:15:20,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i Unable to find full path for "g++" [2024-10-31 22:15:22,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:15:22,789 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:15:22,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-10-31 22:15:22,820 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/data/d4033f971/fc5395ebdb07492d8afa68ceca15f8fe/FLAG1c7f4192d [2024-10-31 22:15:22,843 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/data/d4033f971/fc5395ebdb07492d8afa68ceca15f8fe [2024-10-31 22:15:22,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:15:22,849 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:15:22,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:22,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:15:22,861 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:15:22,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:22" (1/1) ... [2024-10-31 22:15:22,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb068af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:22, skipping insertion in model container [2024-10-31 22:15:22,863 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:15:22" (1/1) ... [2024-10-31 22:15:22,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:15:23,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:23,598 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:15:23,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:15:23,717 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:15:23,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23 WrapperNode [2024-10-31 22:15:23,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:15:23,720 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:23,720 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:15:23,720 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:15:23,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,778 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2024-10-31 22:15:23,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:15:23,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:15:23,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:15:23,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:15:23,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,822 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-10-31 22:15:23,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:15:23,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:15:23,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:15:23,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:15:23,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (1/1) ... [2024-10-31 22:15:23,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:15:23,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:15:23,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:15:23,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48249816-3cbc-4890-8a88-e491efbef757/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:15:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:15:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:15:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:15:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:15:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:15:23,942 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:15:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:15:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:15:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:15:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:15:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:15:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:15:23,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:15:23,946 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:15:24,145 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:15:24,148 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:15:24,424 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:15:24,425 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:15:24,642 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:15:24,643 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:15:24,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:24 BoogieIcfgContainer [2024-10-31 22:15:24,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:15:24,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:15:24,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:15:24,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:15:24,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:15:22" (1/3) ... [2024-10-31 22:15:24,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38096f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:24, skipping insertion in model container [2024-10-31 22:15:24,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:15:23" (2/3) ... [2024-10-31 22:15:24,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38096f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:15:24, skipping insertion in model container [2024-10-31 22:15:24,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:15:24" (3/3) ... [2024-10-31 22:15:24,654 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-10-31 22:15:24,676 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:15:24,677 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-31 22:15:24,677 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:15:24,730 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:15:24,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 28 transitions, 60 flow [2024-10-31 22:15:24,834 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-10-31 22:15:24,834 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:24,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 4/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-10-31 22:15:24,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 28 transitions, 60 flow [2024-10-31 22:15:24,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 28 transitions, 60 flow [2024-10-31 22:15:24,852 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:24,859 INFO L333 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, 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;@396d9eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:24,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-31 22:15:24,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:24,872 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-10-31 22:15:24,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:24,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:24,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:15:24,874 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-31 22:15:24,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 255457082, now seen corresponding path program 1 times [2024-10-31 22:15:24,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:24,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573391050] [2024-10-31 22:15:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:24,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573391050] [2024-10-31 22:15:25,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573391050] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:25,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:25,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54681374] [2024-10-31 22:15:25,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:25,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:25,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:25,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 28 [2024-10-31 22:15:25,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 28 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:25,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:25,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 28 [2024-10-31 22:15:25,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:25,582 INFO L124 PetriNetUnfolderBase]: 22/80 cut-off events. [2024-10-31 22:15:25,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:15:25,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 80 events. 22/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 227 event pairs, 2 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 120. Up to 38 conditions per place. [2024-10-31 22:15:25,589 INFO L140 encePairwiseOnDemand]: 22/28 looper letters, 13 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2024-10-31 22:15:25,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 86 flow [2024-10-31 22:15:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-10-31 22:15:25,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-10-31 22:15:25,610 INFO L175 Difference]: Start difference. First operand has 27 places, 28 transitions, 60 flow. Second operand 3 states and 53 transitions. [2024-10-31 22:15:25,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 86 flow [2024-10-31 22:15:25,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:25,619 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 56 flow [2024-10-31 22:15:25,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-10-31 22:15:25,630 INFO L277 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-10-31 22:15:25,631 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 56 flow [2024-10-31 22:15:25,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:25,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:25,633 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:15:25,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:15:25,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2024-10-31 22:15:25,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -670782761, now seen corresponding path program 1 times [2024-10-31 22:15:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025865539] [2024-10-31 22:15:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:25,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:15:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:25,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:15:25,738 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:15:25,743 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-31 22:15:25,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2024-10-31 22:15:25,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2024-10-31 22:15:25,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2024-10-31 22:15:25,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2024-10-31 22:15:25,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2024-10-31 22:15:25,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2024-10-31 22:15:25,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2024-10-31 22:15:25,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2024-10-31 22:15:25,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:15:25,752 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:15:25,757 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:15:25,757 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:15:25,808 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:15:25,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 51 transitions, 112 flow [2024-10-31 22:15:25,841 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-10-31 22:15:25,841 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:15:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 156 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-10-31 22:15:25,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 51 transitions, 112 flow [2024-10-31 22:15:25,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 51 transitions, 112 flow [2024-10-31 22:15:25,847 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:25,849 INFO L333 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, 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;@396d9eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:25,849 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-31 22:15:25,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:25,855 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:15:25,855 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:15:25,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:25,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:15:25,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-31 22:15:25,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash 304148483, now seen corresponding path program 1 times [2024-10-31 22:15:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:25,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241111331] [2024-10-31 22:15:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241111331] [2024-10-31 22:15:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241111331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333024999] [2024-10-31 22:15:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:26,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:26,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:26,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-10-31 22:15:26,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:26,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:26,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-10-31 22:15:26,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:26,397 INFO L124 PetriNetUnfolderBase]: 421/977 cut-off events. [2024-10-31 22:15:26,397 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-31 22:15:26,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1643 conditions, 977 events. 421/977 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5979 event pairs, 54 based on Foata normal form. 108/1004 useless extension candidates. Maximal degree in co-relation 1348. Up to 517 conditions per place. [2024-10-31 22:15:26,417 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 31 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-31 22:15:26,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 193 flow [2024-10-31 22:15:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-31 22:15:26,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7254901960784313 [2024-10-31 22:15:26,423 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 112 flow. Second operand 3 states and 111 transitions. [2024-10-31 22:15:26,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 193 flow [2024-10-31 22:15:26,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 193 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:26,429 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 104 flow [2024-10-31 22:15:26,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-10-31 22:15:26,430 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-10-31 22:15:26,430 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 104 flow [2024-10-31 22:15:26,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:26,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:26,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:15:26,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:15:26,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-31 22:15:26,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash 838668737, now seen corresponding path program 1 times [2024-10-31 22:15:26,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:26,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298643256] [2024-10-31 22:15:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:26,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:26,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298643256] [2024-10-31 22:15:26,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298643256] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:26,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:26,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077227737] [2024-10-31 22:15:26,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:26,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:26,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:26,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:26,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-10-31 22:15:26,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:26,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:26,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-10-31 22:15:26,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:26,807 INFO L124 PetriNetUnfolderBase]: 372/856 cut-off events. [2024-10-31 22:15:26,807 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-31 22:15:26,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 856 events. 372/856 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4952 event pairs, 126 based on Foata normal form. 27/799 useless extension candidates. Maximal degree in co-relation 1292. Up to 447 conditions per place. [2024-10-31 22:15:26,840 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-31 22:15:26,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 193 flow [2024-10-31 22:15:26,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-31 22:15:26,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:15:26,842 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 104 flow. Second operand 3 states and 102 transitions. [2024-10-31 22:15:26,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 193 flow [2024-10-31 22:15:26,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:26,848 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 102 flow [2024-10-31 22:15:26,849 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-10-31 22:15:26,849 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-10-31 22:15:26,850 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 102 flow [2024-10-31 22:15:26,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:26,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:26,851 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:26,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:15:26,852 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-31 22:15:26,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:26,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1531449029, now seen corresponding path program 1 times [2024-10-31 22:15:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:26,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14703661] [2024-10-31 22:15:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:26,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:15:26,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:26,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14703661] [2024-10-31 22:15:26,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14703661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:26,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:26,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:26,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529917509] [2024-10-31 22:15:26,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:26,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:26,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:26,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:26,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:26,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2024-10-31 22:15:26,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:26,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:26,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2024-10-31 22:15:26,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:27,206 INFO L124 PetriNetUnfolderBase]: 412/937 cut-off events. [2024-10-31 22:15:27,207 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-10-31 22:15:27,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 937 events. 412/937 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5637 event pairs, 72 based on Foata normal form. 24/889 useless extension candidates. Maximal degree in co-relation 1135. Up to 472 conditions per place. [2024-10-31 22:15:27,217 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-10-31 22:15:27,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 188 flow [2024-10-31 22:15:27,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-10-31 22:15:27,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-31 22:15:27,220 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 102 flow. Second operand 3 states and 102 transitions. [2024-10-31 22:15:27,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 188 flow [2024-10-31 22:15:27,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:27,225 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 100 flow [2024-10-31 22:15:27,226 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-10-31 22:15:27,227 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-10-31 22:15:27,228 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 100 flow [2024-10-31 22:15:27,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:27,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:27,232 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-31 22:15:27,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:15:27,232 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2024-10-31 22:15:27,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash -230297281, now seen corresponding path program 1 times [2024-10-31 22:15:27,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:27,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637727869] [2024-10-31 22:15:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:27,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:27,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:15:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:27,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:15:27,283 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:15:27,284 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-31 22:15:27,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2024-10-31 22:15:27,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2024-10-31 22:15:27,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2024-10-31 22:15:27,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2024-10-31 22:15:27,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2024-10-31 22:15:27,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2024-10-31 22:15:27,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2024-10-31 22:15:27,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2024-10-31 22:15:27,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2024-10-31 22:15:27,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2024-10-31 22:15:27,290 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2024-10-31 22:15:27,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2024-10-31 22:15:27,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:15:27,293 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-31 22:15:27,294 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:15:27,295 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:15:27,365 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:15:27,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 74 transitions, 166 flow [2024-10-31 22:15:27,384 INFO L124 PetriNetUnfolderBase]: 12/82 cut-off events. [2024-10-31 22:15:27,384 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:15:27,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 12/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 268 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2024-10-31 22:15:27,386 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 74 transitions, 166 flow [2024-10-31 22:15:27,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 74 transitions, 166 flow [2024-10-31 22:15:27,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:27,390 INFO L333 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, 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;@396d9eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:27,391 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 22:15:27,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:27,394 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:15:27,394 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:15:27,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:27,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:15:27,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:27,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 374788195, now seen corresponding path program 1 times [2024-10-31 22:15:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:27,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200419352] [2024-10-31 22:15:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:27,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200419352] [2024-10-31 22:15:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200419352] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:27,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474710284] [2024-10-31 22:15:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:27,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:27,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:27,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:27,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:27,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:27,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:27,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:29,097 INFO L124 PetriNetUnfolderBase]: 5317/9887 cut-off events. [2024-10-31 22:15:29,098 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-10-31 22:15:29,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17250 conditions, 9887 events. 5317/9887 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 80960 event pairs, 806 based on Foata normal form. 1648/10785 useless extension candidates. Maximal degree in co-relation 6526. Up to 5693 conditions per place. [2024-10-31 22:15:29,190 INFO L140 encePairwiseOnDemand]: 64/74 looper letters, 49 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-10-31 22:15:29,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 86 transitions, 304 flow [2024-10-31 22:15:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-10-31 22:15:29,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7612612612612613 [2024-10-31 22:15:29,193 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 166 flow. Second operand 3 states and 169 transitions. [2024-10-31 22:15:29,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 86 transitions, 304 flow [2024-10-31 22:15:29,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 300 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:29,197 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 152 flow [2024-10-31 22:15:29,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-10-31 22:15:29,198 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2024-10-31 22:15:29,199 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 152 flow [2024-10-31 22:15:29,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:29,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:29,199 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:15:29,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:15:29,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:29,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1266467413, now seen corresponding path program 1 times [2024-10-31 22:15:29,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:29,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000455150] [2024-10-31 22:15:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:29,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:29,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:29,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000455150] [2024-10-31 22:15:29,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000455150] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:29,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:29,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314565254] [2024-10-31 22:15:29,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:29,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:29,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:29,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:29,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:29,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:29,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:29,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:30,615 INFO L124 PetriNetUnfolderBase]: 4754/9105 cut-off events. [2024-10-31 22:15:30,615 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-10-31 22:15:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16026 conditions, 9105 events. 4754/9105 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 75288 event pairs, 806 based on Foata normal form. 219/8589 useless extension candidates. Maximal degree in co-relation 14380. Up to 4911 conditions per place. [2024-10-31 22:15:30,701 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-10-31 22:15:30,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 300 flow [2024-10-31 22:15:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:30,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-31 22:15:30,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-10-31 22:15:30,703 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 152 flow. Second operand 3 states and 156 transitions. [2024-10-31 22:15:30,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 300 flow [2024-10-31 22:15:30,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:30,710 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 150 flow [2024-10-31 22:15:30,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-10-31 22:15:30,714 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-10-31 22:15:30,714 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 150 flow [2024-10-31 22:15:30,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:30,716 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:30,717 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:30,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:15:30,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:30,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:30,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1637667845, now seen corresponding path program 1 times [2024-10-31 22:15:30,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:30,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003462689] [2024-10-31 22:15:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:30,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:15:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:30,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003462689] [2024-10-31 22:15:30,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003462689] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:30,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:30,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:30,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598863435] [2024-10-31 22:15:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:30,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:30,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:30,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:30,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:30,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:30,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:32,162 INFO L124 PetriNetUnfolderBase]: 5320/9847 cut-off events. [2024-10-31 22:15:32,162 INFO L125 PetriNetUnfolderBase]: For 751/751 co-relation queries the response was YES. [2024-10-31 22:15:32,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17622 conditions, 9847 events. 5320/9847 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 79872 event pairs, 824 based on Foata normal form. 216/9359 useless extension candidates. Maximal degree in co-relation 12822. Up to 5648 conditions per place. [2024-10-31 22:15:32,269 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 48 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-10-31 22:15:32,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 295 flow [2024-10-31 22:15:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:32,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-31 22:15:32,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-10-31 22:15:32,272 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 150 flow. Second operand 3 states and 156 transitions. [2024-10-31 22:15:32,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 295 flow [2024-10-31 22:15:32,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:32,281 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 148 flow [2024-10-31 22:15:32,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-10-31 22:15:32,352 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2024-10-31 22:15:32,353 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 148 flow [2024-10-31 22:15:32,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:32,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:32,354 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:32,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:15:32,355 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:32,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 771904809, now seen corresponding path program 1 times [2024-10-31 22:15:32,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:32,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349445639] [2024-10-31 22:15:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:32,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:15:32,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:32,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349445639] [2024-10-31 22:15:32,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349445639] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:32,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:32,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:32,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388844069] [2024-10-31 22:15:32,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:32,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:32,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:32,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:32,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:32,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:32,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:32,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:33,445 INFO L124 PetriNetUnfolderBase]: 4718/8669 cut-off events. [2024-10-31 22:15:33,445 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2024-10-31 22:15:33,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15584 conditions, 8669 events. 4718/8669 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 67285 event pairs, 1400 based on Foata normal form. 216/8157 useless extension candidates. Maximal degree in co-relation 7276. Up to 4872 conditions per place. [2024-10-31 22:15:33,528 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 47 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-10-31 22:15:33,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 287 flow [2024-10-31 22:15:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-31 22:15:33,530 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-10-31 22:15:33,530 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 148 flow. Second operand 3 states and 155 transitions. [2024-10-31 22:15:33,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 287 flow [2024-10-31 22:15:33,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:33,537 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 146 flow [2024-10-31 22:15:33,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-10-31 22:15:33,540 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-10-31 22:15:33,540 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 146 flow [2024-10-31 22:15:33,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:33,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:33,543 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:33,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:15:33,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:33,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1957424746, now seen corresponding path program 1 times [2024-10-31 22:15:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589319692] [2024-10-31 22:15:33,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:33,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:33,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:33,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589319692] [2024-10-31 22:15:33,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589319692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:33,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:33,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:33,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406042887] [2024-10-31 22:15:33,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:33,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:33,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:33,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:33,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:33,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:33,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:33,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:33,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:33,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:35,011 INFO L124 PetriNetUnfolderBase]: 5212/9269 cut-off events. [2024-10-31 22:15:35,011 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-10-31 22:15:35,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17047 conditions, 9269 events. 5212/9269 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 71523 event pairs, 1880 based on Foata normal form. 219/8564 useless extension candidates. Maximal degree in co-relation 16694. Up to 4129 conditions per place. [2024-10-31 22:15:35,097 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 67 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2024-10-31 22:15:35,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 394 flow [2024-10-31 22:15:35,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:35,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-10-31 22:15:35,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7162162162162162 [2024-10-31 22:15:35,100 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 146 flow. Second operand 4 states and 212 transitions. [2024-10-31 22:15:35,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 394 flow [2024-10-31 22:15:35,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:15:35,117 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 148 flow [2024-10-31 22:15:35,117 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-10-31 22:15:35,118 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2024-10-31 22:15:35,118 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 148 flow [2024-10-31 22:15:35,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:35,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:35,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:35,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:15:35,120 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:35,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:35,121 INFO L85 PathProgramCache]: Analyzing trace with hash 550625427, now seen corresponding path program 1 times [2024-10-31 22:15:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:35,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365197539] [2024-10-31 22:15:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365197539] [2024-10-31 22:15:35,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365197539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:35,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:35,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:15:35,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752420292] [2024-10-31 22:15:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:35,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:15:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:15:35,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:15:35,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:35,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:35,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:35,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:35,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:36,988 INFO L124 PetriNetUnfolderBase]: 8962/16346 cut-off events. [2024-10-31 22:15:36,988 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2024-10-31 22:15:37,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30244 conditions, 16346 events. 8962/16346 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 139596 event pairs, 4390 based on Foata normal form. 219/15186 useless extension candidates. Maximal degree in co-relation 14374. Up to 7261 conditions per place. [2024-10-31 22:15:37,112 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 74 selfloop transitions, 4 changer transitions 0/109 dead transitions. [2024-10-31 22:15:37,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 109 transitions, 424 flow [2024-10-31 22:15:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:15:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:15:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2024-10-31 22:15:37,114 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7398648648648649 [2024-10-31 22:15:37,115 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 148 flow. Second operand 4 states and 219 transitions. [2024-10-31 22:15:37,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 109 transitions, 424 flow [2024-10-31 22:15:37,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:15:37,157 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 167 flow [2024-10-31 22:15:37,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-10-31 22:15:37,159 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-10-31 22:15:37,159 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 167 flow [2024-10-31 22:15:37,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:37,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:37,160 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:37,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:15:37,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:37,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1288043932, now seen corresponding path program 1 times [2024-10-31 22:15:37,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:37,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537257485] [2024-10-31 22:15:37,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:37,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-31 22:15:37,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537257485] [2024-10-31 22:15:37,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537257485] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136506270] [2024-10-31 22:15:37,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:37,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:37,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:37,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-10-31 22:15:37,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:37,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:37,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-10-31 22:15:37,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:39,035 INFO L124 PetriNetUnfolderBase]: 9388/17039 cut-off events. [2024-10-31 22:15:39,036 INFO L125 PetriNetUnfolderBase]: For 3114/3258 co-relation queries the response was YES. [2024-10-31 22:15:39,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32358 conditions, 17039 events. 9388/17039 cut-off events. For 3114/3258 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 145912 event pairs, 1970 based on Foata normal form. 336/16234 useless extension candidates. Maximal degree in co-relation 18871. Up to 9128 conditions per place. [2024-10-31 22:15:39,177 INFO L140 encePairwiseOnDemand]: 71/74 looper letters, 53 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-10-31 22:15:39,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 85 transitions, 336 flow [2024-10-31 22:15:39,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-10-31 22:15:39,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6981981981981982 [2024-10-31 22:15:39,179 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 167 flow. Second operand 3 states and 155 transitions. [2024-10-31 22:15:39,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 85 transitions, 336 flow [2024-10-31 22:15:39,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:15:39,186 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 166 flow [2024-10-31 22:15:39,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-10-31 22:15:39,187 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2024-10-31 22:15:39,188 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 166 flow [2024-10-31 22:15:39,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:39,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:39,188 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-31 22:15:39,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:15:39,189 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2024-10-31 22:15:39,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1274673770, now seen corresponding path program 1 times [2024-10-31 22:15:39,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:39,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395432518] [2024-10-31 22:15:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:39,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:39,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:15:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:15:39,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:15:39,217 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:15:39,217 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-31 22:15:39,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2024-10-31 22:15:39,218 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2024-10-31 22:15:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2024-10-31 22:15:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2024-10-31 22:15:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2024-10-31 22:15:39,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2024-10-31 22:15:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2024-10-31 22:15:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2024-10-31 22:15:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2024-10-31 22:15:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2024-10-31 22:15:39,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2024-10-31 22:15:39,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2024-10-31 22:15:39,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2024-10-31 22:15:39,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2024-10-31 22:15:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2024-10-31 22:15:39,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2024-10-31 22:15:39,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:15:39,222 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:15:39,224 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:15:39,224 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-31 22:15:39,286 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:15:39,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 97 transitions, 222 flow [2024-10-31 22:15:39,314 INFO L124 PetriNetUnfolderBase]: 16/108 cut-off events. [2024-10-31 22:15:39,315 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-31 22:15:39,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 108 events. 16/108 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 369 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 94. Up to 5 conditions per place. [2024-10-31 22:15:39,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 97 transitions, 222 flow [2024-10-31 22:15:39,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 97 transitions, 222 flow [2024-10-31 22:15:39,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:15:39,320 INFO L333 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, 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;@396d9eb2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:15:39,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-31 22:15:39,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:15:39,324 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:15:39,324 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:15:39,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:39,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:15:39,325 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-31 22:15:39,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:39,325 INFO L85 PathProgramCache]: Analyzing trace with hash 467377626, now seen corresponding path program 1 times [2024-10-31 22:15:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:39,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334470167] [2024-10-31 22:15:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:39,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:39,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334470167] [2024-10-31 22:15:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334470167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:39,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601298] [2024-10-31 22:15:39,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:39,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:39,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:39,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:39,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:39,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-10-31 22:15:39,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:39,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:39,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-10-31 22:15:39,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:15:48,899 INFO L124 PetriNetUnfolderBase]: 58261/94975 cut-off events. [2024-10-31 22:15:48,900 INFO L125 PetriNetUnfolderBase]: For 6419/6419 co-relation queries the response was YES. [2024-10-31 22:15:49,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170307 conditions, 94975 events. 58261/94975 cut-off events. For 6419/6419 co-relation queries the response was YES. Maximal size of possible extension queue 4003. Compared 895680 event pairs, 9510 based on Foata normal form. 19220/107997 useless extension candidates. Maximal degree in co-relation 30712. Up to 57853 conditions per place. [2024-10-31 22:15:49,727 INFO L140 encePairwiseOnDemand]: 85/97 looper letters, 67 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-10-31 22:15:49,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 419 flow [2024-10-31 22:15:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:15:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:15:49,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2024-10-31 22:15:49,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7800687285223368 [2024-10-31 22:15:49,730 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 222 flow. Second operand 3 states and 227 transitions. [2024-10-31 22:15:49,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 419 flow [2024-10-31 22:15:49,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 116 transitions, 407 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-31 22:15:49,739 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 200 flow [2024-10-31 22:15:49,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2024-10-31 22:15:49,742 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2024-10-31 22:15:49,742 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 200 flow [2024-10-31 22:15:49,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:49,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:15:49,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:15:49,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-31 22:15:49,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-31 22:15:49,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:15:49,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1603805067, now seen corresponding path program 1 times [2024-10-31 22:15:49,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:15:49,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013378602] [2024-10-31 22:15:49,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:15:49,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:15:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:15:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:15:49,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:15:49,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013378602] [2024-10-31 22:15:49,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013378602] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:15:49,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:15:49,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:15:49,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265713804] [2024-10-31 22:15:49,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:15:49,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:15:49,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:15:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:15:49,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:15:49,835 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 97 [2024-10-31 22:15:49,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:15:49,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:15:49,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 97 [2024-10-31 22:15:49,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand