./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 25b17d9846be3bf6d57cc6f8838ab7429415f7d55e2316a61257e7b64e148fac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:36,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:36,516 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:57:36,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:36,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:36,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:36,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:36,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:36,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:36,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:36,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:36,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:36,590 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:36,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:36,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:36,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:36,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:36,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:36,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:36,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:36,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:36,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:36,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:36,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:36,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:36,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:36,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:36,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:36,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:36,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:36,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:36,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:36,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:36,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:36,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:36,616 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:36,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:36,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:36,616 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:36,617 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_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25b17d9846be3bf6d57cc6f8838ab7429415f7d55e2316a61257e7b64e148fac [2023-11-06 22:57:36,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:36,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:36,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:36,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:36,968 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:36,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-06 22:57:39,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:40,630 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:40,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-06 22:57:40,675 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/data/18bfda73c/350dfc7d04944874a4f207b943e26e18/FLAGadb47c628 [2023-11-06 22:57:40,692 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/data/18bfda73c/350dfc7d04944874a4f207b943e26e18 [2023-11-06 22:57:40,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:40,696 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:40,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:40,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:40,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:40,705 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:40" (1/1) ... [2023-11-06 22:57:40,706 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6be2db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:40, skipping insertion in model container [2023-11-06 22:57:40,706 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:40" (1/1) ... [2023-11-06 22:57:40,854 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:41,305 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[26888,26901] [2023-11-06 22:57:41,360 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[32443,32456] [2023-11-06 22:57:42,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:42,445 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:42,518 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[26888,26901] [2023-11-06 22:57:42,532 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c[32443,32456] [2023-11-06 22:57:43,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:43,254 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:43,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43 WrapperNode [2023-11-06 22:57:43,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:43,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:43,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:43,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:43,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:43,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:43,677 INFO L138 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5282 [2023-11-06 22:57:43,677 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:43,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:43,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:43,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:43,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:43,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:43,864 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:43,864 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:44,134 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:44,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:44,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:44,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:44,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:44,380 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:44,380 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:44,380 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:44,381 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (1/1) ... [2023-11-06 22:57:44,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:44,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:44,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:44,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a220cd5-d625-4fc5-893b-73aa80fa24ea/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:44,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:44,864 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:44,867 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:50,803 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:50,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:50,820 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:57:50,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:50 BoogieIcfgContainer [2023-11-06 22:57:50,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:50,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:50,827 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:50,831 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:50,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:40" (1/3) ... [2023-11-06 22:57:50,832 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c415c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:50, skipping insertion in model container [2023-11-06 22:57:50,832 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:43" (2/3) ... [2023-11-06 22:57:50,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c415c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:50, skipping insertion in model container [2023-11-06 22:57:50,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:50" (3/3) ... [2023-11-06 22:57:50,834 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label01.c [2023-11-06 22:57:50,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:50,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:57:50,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:50,967 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@13e9a800, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:50,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:57:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:57:50,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:50,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:50,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:51,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1967767115, now seen corresponding path program 1 times [2023-11-06 22:57:51,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171034498] [2023-11-06 22:57:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:51,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:51,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171034498] [2023-11-06 22:57:51,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171034498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:51,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:51,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:51,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361389438] [2023-11-06 22:57:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:57:51,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:57:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:57:51,500 INFO L87 Difference]: Start difference. First operand has 949 states, 946 states have (on average 1.9027484143763214) internal successors, (1800), 948 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:51,597 INFO L93 Difference]: Finished difference Result 1829 states and 3468 transitions. [2023-11-06 22:57:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:57:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-06 22:57:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:51,624 INFO L225 Difference]: With dead ends: 1829 [2023-11-06 22:57:51,624 INFO L226 Difference]: Without dead ends: 883 [2023-11-06 22:57:51,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:57:51,636 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:51,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-06 22:57:51,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-11-06 22:57:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8921679909194098) internal successors, (1667), 882 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1667 transitions. [2023-11-06 22:57:51,767 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1667 transitions. Word has length 30 [2023-11-06 22:57:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:51,767 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1667 transitions. [2023-11-06 22:57:51,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1667 transitions. [2023-11-06 22:57:51,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:57:51,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:51,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:51,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:57:51,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:51,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2101780621, now seen corresponding path program 1 times [2023-11-06 22:57:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:51,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011983566] [2023-11-06 22:57:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011983566] [2023-11-06 22:57:52,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011983566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:52,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:52,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:57:52,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919923236] [2023-11-06 22:57:52,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:57:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:57:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:57:52,160 INFO L87 Difference]: Start difference. First operand 883 states and 1667 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:52,446 INFO L93 Difference]: Finished difference Result 949 states and 1771 transitions. [2023-11-06 22:57:52,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:57:52,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-06 22:57:52,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:52,454 INFO L225 Difference]: With dead ends: 949 [2023-11-06 22:57:52,454 INFO L226 Difference]: Without dead ends: 883 [2023-11-06 22:57:52,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:57:52,456 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 2 mSDsluCounter, 4929 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:52,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6594 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:57:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-06 22:57:52,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2023-11-06 22:57:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8229284903518728) internal successors, (1606), 882 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1606 transitions. [2023-11-06 22:57:52,488 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1606 transitions. Word has length 30 [2023-11-06 22:57:52,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:52,488 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1606 transitions. [2023-11-06 22:57:52,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:52,489 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1606 transitions. [2023-11-06 22:57:52,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:57:52,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:52,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:57:52,491 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:52,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1488328053, now seen corresponding path program 1 times [2023-11-06 22:57:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129951956] [2023-11-06 22:57:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129951956] [2023-11-06 22:57:52,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129951956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:52,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:52,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529297373] [2023-11-06 22:57:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:52,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:52,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:52,603 INFO L87 Difference]: Start difference. First operand 883 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:57,193 INFO L93 Difference]: Finished difference Result 2387 states and 4479 transitions. [2023-11-06 22:57:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-11-06 22:57:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:57,205 INFO L225 Difference]: With dead ends: 2387 [2023-11-06 22:57:57,206 INFO L226 Difference]: Without dead ends: 1634 [2023-11-06 22:57:57,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:57,209 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 937 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:57,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 595 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 22:57:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-11-06 22:57:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1634. [2023-11-06 22:57:57,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.6133578431372548) internal successors, (2633), 1633 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2633 transitions. [2023-11-06 22:57:57,261 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2633 transitions. Word has length 48 [2023-11-06 22:57:57,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:57,262 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2633 transitions. [2023-11-06 22:57:57,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2633 transitions. [2023-11-06 22:57:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:57:57,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:57,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:57,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:57:57,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:57,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:57,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1651582301, now seen corresponding path program 1 times [2023-11-06 22:57:57,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:57,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433484254] [2023-11-06 22:57:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:57,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:57,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:57,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:57,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433484254] [2023-11-06 22:57:57,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433484254] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:57,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:57,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:57:57,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378032239] [2023-11-06 22:57:57,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:57:57,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:57,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:57:57,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:57:57,739 INFO L87 Difference]: Start difference. First operand 1634 states and 2633 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:58,478 INFO L93 Difference]: Finished difference Result 2626 states and 4233 transitions. [2023-11-06 22:57:58,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:57:58,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-11-06 22:57:58,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:58,495 INFO L225 Difference]: With dead ends: 2626 [2023-11-06 22:57:58,495 INFO L226 Difference]: Without dead ends: 2564 [2023-11-06 22:57:58,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:57:58,508 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 13578 mSDsluCounter, 3975 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13578 SdHoareTripleChecker+Valid, 5575 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:58,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13578 Valid, 5575 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:57:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-11-06 22:57:58,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 1694. [2023-11-06 22:57:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 1692 states have (on average 1.6134751773049645) internal successors, (2730), 1693 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 2730 transitions. [2023-11-06 22:57:58,589 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 2730 transitions. Word has length 90 [2023-11-06 22:57:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:58,592 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 2730 transitions. [2023-11-06 22:57:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 2730 transitions. [2023-11-06 22:57:58,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 22:57:58,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:58,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:58,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:57:58,599 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:58,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:58,599 INFO L85 PathProgramCache]: Analyzing trace with hash 551619955, now seen corresponding path program 1 times [2023-11-06 22:57:58,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:58,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261706936] [2023-11-06 22:57:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:58,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:58,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:58,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261706936] [2023-11-06 22:57:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261706936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:58,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:58,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:57:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052281173] [2023-11-06 22:57:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:58,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:58,886 INFO L87 Difference]: Start difference. First operand 1694 states and 2730 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:57:59,002 INFO L93 Difference]: Finished difference Result 1927 states and 3105 transitions. [2023-11-06 22:57:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:59,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-11-06 22:57:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:57:59,018 INFO L225 Difference]: With dead ends: 1927 [2023-11-06 22:57:59,018 INFO L226 Difference]: Without dead ends: 1805 [2023-11-06 22:57:59,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:59,020 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1508 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:57:59,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1695 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:57:59,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2023-11-06 22:57:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1801. [2023-11-06 22:57:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.6120066703724292) internal successors, (2900), 1800 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2900 transitions. [2023-11-06 22:57:59,128 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2900 transitions. Word has length 92 [2023-11-06 22:57:59,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:57:59,129 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2900 transitions. [2023-11-06 22:57:59,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:57:59,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2900 transitions. [2023-11-06 22:57:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-06 22:57:59,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:57:59,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:59,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:57:59,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:57:59,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:59,134 INFO L85 PathProgramCache]: Analyzing trace with hash 618113467, now seen corresponding path program 1 times [2023-11-06 22:57:59,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94220159] [2023-11-06 22:57:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:59,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:59,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:59,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94220159] [2023-11-06 22:57:59,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94220159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:59,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:59,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:57:59,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790315094] [2023-11-06 22:57:59,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:59,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:57:59,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:57:59,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:57:59,931 INFO L87 Difference]: Start difference. First operand 1801 states and 2900 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:00,615 INFO L93 Difference]: Finished difference Result 2032 states and 3268 transitions. [2023-11-06 22:58:00,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:58:00,616 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-11-06 22:58:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:00,627 INFO L225 Difference]: With dead ends: 2032 [2023-11-06 22:58:00,627 INFO L226 Difference]: Without dead ends: 1803 [2023-11-06 22:58:00,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:58:00,629 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 9138 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9138 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:00,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9138 Valid, 2281 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:58:00,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2023-11-06 22:58:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1801. [2023-11-06 22:58:00,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.6108949416342413) internal successors, (2898), 1800 states have internal predecessors, (2898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2898 transitions. [2023-11-06 22:58:00,719 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2898 transitions. Word has length 92 [2023-11-06 22:58:00,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:00,721 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 2898 transitions. [2023-11-06 22:58:00,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2898 transitions. [2023-11-06 22:58:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 22:58:00,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:00,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:58:00,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:00,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1566925479, now seen corresponding path program 1 times [2023-11-06 22:58:00,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:00,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16946209] [2023-11-06 22:58:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:00,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16946209] [2023-11-06 22:58:01,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16946209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:01,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:01,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:58:01,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611349344] [2023-11-06 22:58:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:58:01,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:58:01,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:58:01,112 INFO L87 Difference]: Start difference. First operand 1801 states and 2898 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:01,249 INFO L93 Difference]: Finished difference Result 1997 states and 3214 transitions. [2023-11-06 22:58:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:58:01,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-11-06 22:58:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:01,262 INFO L225 Difference]: With dead ends: 1997 [2023-11-06 22:58:01,263 INFO L226 Difference]: Without dead ends: 1995 [2023-11-06 22:58:01,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:58:01,265 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 88 mSDsluCounter, 4966 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 6652 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:01,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 6652 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:01,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2023-11-06 22:58:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1807. [2023-11-06 22:58:01,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1807 states, 1805 states have (on average 1.6083102493074792) internal successors, (2903), 1806 states have internal predecessors, (2903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2903 transitions. [2023-11-06 22:58:01,367 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2903 transitions. Word has length 93 [2023-11-06 22:58:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:01,368 INFO L495 AbstractCegarLoop]: Abstraction has 1807 states and 2903 transitions. [2023-11-06 22:58:01,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2903 transitions. [2023-11-06 22:58:01,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:01,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:01,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:58:01,370 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:01,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash -401487589, now seen corresponding path program 1 times [2023-11-06 22:58:01,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:01,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673728381] [2023-11-06 22:58:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:01,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:01,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:01,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673728381] [2023-11-06 22:58:01,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673728381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:01,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:01,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:01,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079797473] [2023-11-06 22:58:01,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:01,496 INFO L87 Difference]: Start difference. First operand 1807 states and 2903 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:01,615 INFO L93 Difference]: Finished difference Result 2261 states and 3615 transitions. [2023-11-06 22:58:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:01,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:01,627 INFO L225 Difference]: With dead ends: 2261 [2023-11-06 22:58:01,627 INFO L226 Difference]: Without dead ends: 2026 [2023-11-06 22:58:01,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:01,632 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 1527 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:01,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-11-06 22:58:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2024. [2023-11-06 22:58:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2022 states have (on average 1.6023738872403561) internal successors, (3240), 2023 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3240 transitions. [2023-11-06 22:58:01,772 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3240 transitions. Word has length 94 [2023-11-06 22:58:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:01,772 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 3240 transitions. [2023-11-06 22:58:01,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:01,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3240 transitions. [2023-11-06 22:58:01,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:01,775 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:01,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:01,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:58:01,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:01,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:01,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1540581915, now seen corresponding path program 1 times [2023-11-06 22:58:01,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:01,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194286180] [2023-11-06 22:58:01,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:01,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:01,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194286180] [2023-11-06 22:58:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194286180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:01,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:01,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400981608] [2023-11-06 22:58:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:01,934 INFO L87 Difference]: Start difference. First operand 2024 states and 3240 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:02,157 INFO L93 Difference]: Finished difference Result 2896 states and 4598 transitions. [2023-11-06 22:58:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:02,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:02,173 INFO L225 Difference]: With dead ends: 2896 [2023-11-06 22:58:02,174 INFO L226 Difference]: Without dead ends: 2444 [2023-11-06 22:58:02,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:02,178 INFO L413 NwaCegarLoop]: 1681 mSDtfsCounter, 1525 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:02,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2023-11-06 22:58:02,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2442. [2023-11-06 22:58:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 2440 states have (on average 1.590983606557377) internal successors, (3882), 2441 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3882 transitions. [2023-11-06 22:58:02,416 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3882 transitions. Word has length 94 [2023-11-06 22:58:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:02,417 INFO L495 AbstractCegarLoop]: Abstraction has 2442 states and 3882 transitions. [2023-11-06 22:58:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3882 transitions. [2023-11-06 22:58:02,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:02,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:02,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:02,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:58:02,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:02,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:02,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1967352859, now seen corresponding path program 1 times [2023-11-06 22:58:02,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:02,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297177541] [2023-11-06 22:58:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:02,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:02,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:02,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297177541] [2023-11-06 22:58:02,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297177541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:02,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:02,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:02,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082707399] [2023-11-06 22:58:02,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:02,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:02,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:02,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:02,555 INFO L87 Difference]: Start difference. First operand 2442 states and 3882 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:02,966 INFO L93 Difference]: Finished difference Result 4118 states and 6468 transitions. [2023-11-06 22:58:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:02,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:02,986 INFO L225 Difference]: With dead ends: 4118 [2023-11-06 22:58:02,986 INFO L226 Difference]: Without dead ends: 3248 [2023-11-06 22:58:02,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:02,989 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1521 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:02,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1786 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2023-11-06 22:58:03,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3246. [2023-11-06 22:58:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 3244 states have (on average 1.5727496917385944) internal successors, (5102), 3245 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 5102 transitions. [2023-11-06 22:58:03,378 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 5102 transitions. Word has length 94 [2023-11-06 22:58:03,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:03,378 INFO L495 AbstractCegarLoop]: Abstraction has 3246 states and 5102 transitions. [2023-11-06 22:58:03,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:03,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 5102 transitions. [2023-11-06 22:58:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:03,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:03,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:03,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:58:03,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:03,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:03,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1089352421, now seen corresponding path program 1 times [2023-11-06 22:58:03,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:03,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128021876] [2023-11-06 22:58:03,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:03,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128021876] [2023-11-06 22:58:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128021876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:03,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:03,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351814051] [2023-11-06 22:58:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:03,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:03,484 INFO L87 Difference]: Start difference. First operand 3246 states and 5102 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:04,262 INFO L93 Difference]: Finished difference Result 6466 states and 10016 transitions. [2023-11-06 22:58:04,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:04,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:04,310 INFO L225 Difference]: With dead ends: 6466 [2023-11-06 22:58:04,311 INFO L226 Difference]: Without dead ends: 4792 [2023-11-06 22:58:04,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:04,315 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1519 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:04,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 1788 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2023-11-06 22:58:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 4790. [2023-11-06 22:58:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 4788 states have (on average 1.5484544695071012) internal successors, (7414), 4789 states have internal predecessors, (7414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:05,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 7414 transitions. [2023-11-06 22:58:05,069 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 7414 transitions. Word has length 94 [2023-11-06 22:58:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:05,069 INFO L495 AbstractCegarLoop]: Abstraction has 4790 states and 7414 transitions. [2023-11-06 22:58:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 7414 transitions. [2023-11-06 22:58:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:05,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:05,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:05,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:58:05,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:05,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:05,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1523888357, now seen corresponding path program 1 times [2023-11-06 22:58:05,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:05,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841706804] [2023-11-06 22:58:05,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:05,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:05,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:05,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841706804] [2023-11-06 22:58:05,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841706804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:05,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:05,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:05,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139969943] [2023-11-06 22:58:05,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:05,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:05,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:05,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:05,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:05,214 INFO L87 Difference]: Start difference. First operand 4790 states and 7414 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:06,575 INFO L93 Difference]: Finished difference Result 10970 states and 16728 transitions. [2023-11-06 22:58:06,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:06,595 INFO L225 Difference]: With dead ends: 10970 [2023-11-06 22:58:06,595 INFO L226 Difference]: Without dead ends: 7752 [2023-11-06 22:58:06,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:06,602 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 1515 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:06,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1784 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7752 states. [2023-11-06 22:58:07,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7752 to 7750. [2023-11-06 22:58:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7748 states have (on average 1.5206504904491482) internal successors, (11782), 7749 states have internal predecessors, (11782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 11782 transitions. [2023-11-06 22:58:07,859 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 11782 transitions. Word has length 94 [2023-11-06 22:58:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:07,859 INFO L495 AbstractCegarLoop]: Abstraction has 7750 states and 11782 transitions. [2023-11-06 22:58:07,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 11782 transitions. [2023-11-06 22:58:07,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:07,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:07,861 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:07,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:58:07,862 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:07,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 990146075, now seen corresponding path program 1 times [2023-11-06 22:58:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160407777] [2023-11-06 22:58:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:08,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:08,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160407777] [2023-11-06 22:58:08,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160407777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:08,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:08,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744417358] [2023-11-06 22:58:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:08,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:08,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:08,065 INFO L87 Difference]: Start difference. First operand 7750 states and 11782 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:09,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:09,861 INFO L93 Difference]: Finished difference Result 19594 states and 29384 transitions. [2023-11-06 22:58:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:09,898 INFO L225 Difference]: With dead ends: 19594 [2023-11-06 22:58:09,899 INFO L226 Difference]: Without dead ends: 13416 [2023-11-06 22:58:09,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:09,910 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1517 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:09,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1790 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:09,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13416 states. [2023-11-06 22:58:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13416 to 13414. [2023-11-06 22:58:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13414 states, 13412 states have (on average 1.4916492693110648) internal successors, (20006), 13413 states have internal predecessors, (20006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13414 states to 13414 states and 20006 transitions. [2023-11-06 22:58:12,293 INFO L78 Accepts]: Start accepts. Automaton has 13414 states and 20006 transitions. Word has length 94 [2023-11-06 22:58:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:12,293 INFO L495 AbstractCegarLoop]: Abstraction has 13414 states and 20006 transitions. [2023-11-06 22:58:12,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 13414 states and 20006 transitions. [2023-11-06 22:58:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-06 22:58:12,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:12,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:12,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:58:12,296 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:12,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:12,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1703496475, now seen corresponding path program 1 times [2023-11-06 22:58:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:12,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125903018] [2023-11-06 22:58:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:12,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125903018] [2023-11-06 22:58:12,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125903018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:12,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:12,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:12,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479467210] [2023-11-06 22:58:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:12,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:12,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:12,426 INFO L87 Difference]: Start difference. First operand 13414 states and 20006 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:16,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:16,332 INFO L93 Difference]: Finished difference Result 36074 states and 53160 transitions. [2023-11-06 22:58:16,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:16,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-11-06 22:58:16,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:16,392 INFO L225 Difference]: With dead ends: 36074 [2023-11-06 22:58:16,392 INFO L226 Difference]: Without dead ends: 24232 [2023-11-06 22:58:16,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:16,412 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 1523 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:16,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 1792 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24232 states. [2023-11-06 22:58:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24232 to 24230. [2023-11-06 22:58:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24230 states, 24228 states have (on average 1.4623576027736502) internal successors, (35430), 24229 states have internal predecessors, (35430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24230 states to 24230 states and 35430 transitions. [2023-11-06 22:58:20,440 INFO L78 Accepts]: Start accepts. Automaton has 24230 states and 35430 transitions. Word has length 94 [2023-11-06 22:58:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:20,441 INFO L495 AbstractCegarLoop]: Abstraction has 24230 states and 35430 transitions. [2023-11-06 22:58:20,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 24230 states and 35430 transitions. [2023-11-06 22:58:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 22:58:20,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:20,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:20,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:58:20,443 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:20,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:20,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1087415530, now seen corresponding path program 1 times [2023-11-06 22:58:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719530465] [2023-11-06 22:58:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:20,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:20,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719530465] [2023-11-06 22:58:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719530465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:20,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:20,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:58:20,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501801155] [2023-11-06 22:58:20,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:20,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:20,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:20,547 INFO L87 Difference]: Start difference. First operand 24230 states and 35430 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:58:26,860 INFO L93 Difference]: Finished difference Result 47789 states and 69996 transitions. [2023-11-06 22:58:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:58:26,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-11-06 22:58:26,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:58:26,935 INFO L225 Difference]: With dead ends: 47789 [2023-11-06 22:58:26,936 INFO L226 Difference]: Without dead ends: 35242 [2023-11-06 22:58:26,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:26,956 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1526 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:58:26,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:58:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35242 states. [2023-11-06 22:58:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35242 to 35240. [2023-11-06 22:58:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35240 states, 35238 states have (on average 1.4522958170157216) internal successors, (51176), 35239 states have internal predecessors, (51176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35240 states to 35240 states and 51176 transitions. [2023-11-06 22:58:32,776 INFO L78 Accepts]: Start accepts. Automaton has 35240 states and 51176 transitions. Word has length 96 [2023-11-06 22:58:32,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:58:32,776 INFO L495 AbstractCegarLoop]: Abstraction has 35240 states and 51176 transitions. [2023-11-06 22:58:32,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:58:32,777 INFO L276 IsEmpty]: Start isEmpty. Operand 35240 states and 51176 transitions. [2023-11-06 22:58:32,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-06 22:58:32,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:58:32,793 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:58:32,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:58:32,794 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:58:32,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:32,794 INFO L85 PathProgramCache]: Analyzing trace with hash 54573310, now seen corresponding path program 1 times [2023-11-06 22:58:32,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:32,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861505990] [2023-11-06 22:58:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:32,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:58:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861505990] [2023-11-06 22:58:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861505990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:33,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:58:33,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800406006] [2023-11-06 22:58:33,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:33,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:58:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:33,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:58:33,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:58:33,193 INFO L87 Difference]: Start difference. First operand 35240 states and 51176 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)