./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/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_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/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_142598b9-0d02-49cd-a815-4f5e34e1453d/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 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:32,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:32,401 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:19:32,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:32,406 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:32,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:32,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:32,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:32,454 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:32,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:32,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:32,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:32,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:32,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:32,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:19:32,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:32,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:32,465 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:32,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:32,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:19:32,467 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:32,467 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:19:32,468 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:32,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:19:32,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:32,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:32,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:32,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:32,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:32,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:32,473 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:32,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:19:32,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:32,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:32,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:32,475 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:19:32,476 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:32,476 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:32,477 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:32,477 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_142598b9-0d02-49cd-a815-4f5e34e1453d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 [2023-11-06 22:19:32,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:32,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:32,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:32,842 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:32,843 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:32,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-11-06 22:19:36,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:36,289 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:36,292 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-11-06 22:19:36,308 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/data/cd4b8dd63/2c7dd36032014c588a10e8ba5893fb0d/FLAGd541beb85 [2023-11-06 22:19:36,323 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/data/cd4b8dd63/2c7dd36032014c588a10e8ba5893fb0d [2023-11-06 22:19:36,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:36,329 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:36,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:36,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:36,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:36,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2508566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36, skipping insertion in model container [2023-11-06 22:19:36,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:36,644 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_142598b9-0d02-49cd-a815-4f5e34e1453d/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-11-06 22:19:36,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:36,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:36,731 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_142598b9-0d02-49cd-a815-4f5e34e1453d/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2023-11-06 22:19:36,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:36,751 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:19:36,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36 WrapperNode [2023-11-06 22:19:36,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:36,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:36,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:19:36,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:19:36,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,817 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 334 [2023-11-06 22:19:36,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:36,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:19:36,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:19:36,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:19:36,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,833 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:19:36,860 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:19:36,860 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:19:36,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:19:36,861 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2023-11-06 22:19:36,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:36,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:19:36,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:19:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:19:36,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:19:36,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:19:37,152 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:19:37,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:19:37,728 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:19:37,736 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:19:37,736 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:19:37,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:37 BoogieIcfgContainer [2023-11-06 22:19:37,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:19:37,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:19:37,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:19:37,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:19:37,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:36" (1/3) ... [2023-11-06 22:19:37,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a954f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:37, skipping insertion in model container [2023-11-06 22:19:37,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (2/3) ... [2023-11-06 22:19:37,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a954f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:37, skipping insertion in model container [2023-11-06 22:19:37,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:37" (3/3) ... [2023-11-06 22:19:37,749 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2023-11-06 22:19:37,771 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:19:37,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:19:37,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:19:37,832 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;@7971d61d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:19:37,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:19:37,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 82 states have internal predecessors, (142), 0 states have call successors, (0), 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 22:19:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:19:37,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:37,847 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] [2023-11-06 22:19:37,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:37,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:37,854 INFO L85 PathProgramCache]: Analyzing trace with hash -255059087, now seen corresponding path program 1 times [2023-11-06 22:19:37,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:37,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121719903] [2023-11-06 22:19:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:37,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:38,116 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 22:19:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121719903] [2023-11-06 22:19:38,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121719903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:38,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:38,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:19:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77185624] [2023-11-06 22:19:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:19:38,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:38,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:19:38,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:19:38,168 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.7530864197530864) internal successors, (142), 82 states have internal predecessors, (142), 0 states have call successors, (0), 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 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:19:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:38,193 INFO L93 Difference]: Finished difference Result 130 states and 216 transitions. [2023-11-06 22:19:38,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:19:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-06 22:19:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:38,206 INFO L225 Difference]: With dead ends: 130 [2023-11-06 22:19:38,206 INFO L226 Difference]: Without dead ends: 79 [2023-11-06 22:19:38,210 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 22:19:38,214 INFO L413 NwaCegarLoop]: 139 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, 139 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 22:19:38,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-06 22:19:38,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-06 22:19:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2023-11-06 22:19:38,255 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 23 [2023-11-06 22:19:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:38,256 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2023-11-06 22:19:38,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:19:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2023-11-06 22:19:38,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:19:38,260 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:38,260 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] [2023-11-06 22:19:38,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:19:38,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:38,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2045763503, now seen corresponding path program 1 times [2023-11-06 22:19:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:38,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417545176] [2023-11-06 22:19:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:38,638 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 22:19:38,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:38,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417545176] [2023-11-06 22:19:38,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417545176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:38,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:38,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:19:38,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939373804] [2023-11-06 22:19:38,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:38,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:19:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:19:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:19:38,643 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:19:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:38,740 INFO L93 Difference]: Finished difference Result 125 states and 206 transitions. [2023-11-06 22:19:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:19:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-06 22:19:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:38,742 INFO L225 Difference]: With dead ends: 125 [2023-11-06 22:19:38,742 INFO L226 Difference]: Without dead ends: 79 [2023-11-06 22:19:38,743 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 22:19:38,744 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 2 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:38,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 496 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:38,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-06 22:19:38,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-06 22:19:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.3333333333333333) internal successors, (104), 78 states have internal predecessors, (104), 0 states have call successors, (0), 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 22:19:38,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 104 transitions. [2023-11-06 22:19:38,755 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 104 transitions. Word has length 23 [2023-11-06 22:19:38,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:38,756 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 104 transitions. [2023-11-06 22:19:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 22:19:38,756 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 104 transitions. [2023-11-06 22:19:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-06 22:19:38,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:38,759 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] [2023-11-06 22:19:38,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:19:38,759 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:38,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:38,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1411199270, now seen corresponding path program 1 times [2023-11-06 22:19:38,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:38,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104962886] [2023-11-06 22:19:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:38,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:39,040 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 22:19:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:39,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104962886] [2023-11-06 22:19:39,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104962886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:39,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:39,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:39,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202666419] [2023-11-06 22:19:39,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:39,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:39,044 INFO L87 Difference]: Start difference. First operand 79 states and 104 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 22:19:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:39,422 INFO L93 Difference]: Finished difference Result 499 states and 774 transitions. [2023-11-06 22:19:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:19:39,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-06 22:19:39,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:39,434 INFO L225 Difference]: With dead ends: 499 [2023-11-06 22:19:39,435 INFO L226 Difference]: Without dead ends: 457 [2023-11-06 22:19:39,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:19:39,445 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 758 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:39,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1307 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:19:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-11-06 22:19:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 119. [2023-11-06 22:19:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.423728813559322) internal successors, (168), 118 states have internal predecessors, (168), 0 states have call successors, (0), 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 22:19:39,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 168 transitions. [2023-11-06 22:19:39,498 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 168 transitions. Word has length 53 [2023-11-06 22:19:39,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:39,498 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 168 transitions. [2023-11-06 22:19:39,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 22:19:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 168 transitions. [2023-11-06 22:19:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:19:39,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:39,501 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] [2023-11-06 22:19:39,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:19:39,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:39,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:39,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1832103350, now seen corresponding path program 1 times [2023-11-06 22:19:39,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:39,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312490177] [2023-11-06 22:19:39,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:39,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:39,661 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 22:19:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312490177] [2023-11-06 22:19:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312490177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:39,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:39,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:39,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416260059] [2023-11-06 22:19:39,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:39,665 INFO L87 Difference]: Start difference. First operand 119 states and 168 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:19:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:39,699 INFO L93 Difference]: Finished difference Result 272 states and 411 transitions. [2023-11-06 22:19:39,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:39,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-06 22:19:39,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:39,702 INFO L225 Difference]: With dead ends: 272 [2023-11-06 22:19:39,702 INFO L226 Difference]: Without dead ends: 190 [2023-11-06 22:19:39,704 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 22:19:39,715 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:39,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 164 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:39,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-06 22:19:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2023-11-06 22:19:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.4759358288770053) internal successors, (276), 187 states have internal predecessors, (276), 0 states have call successors, (0), 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 22:19:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 276 transitions. [2023-11-06 22:19:39,748 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 276 transitions. Word has length 55 [2023-11-06 22:19:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:39,750 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 276 transitions. [2023-11-06 22:19:39,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:19:39,751 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 276 transitions. [2023-11-06 22:19:39,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:19:39,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:39,760 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] [2023-11-06 22:19:39,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:19:39,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:39,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:39,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1898596862, now seen corresponding path program 1 times [2023-11-06 22:19:39,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:39,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517423811] [2023-11-06 22:19:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:39,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:40,257 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 22:19:40,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517423811] [2023-11-06 22:19:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517423811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:40,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:40,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628450614] [2023-11-06 22:19:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:40,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:40,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:40,262 INFO L87 Difference]: Start difference. First operand 188 states and 276 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:19:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:40,500 INFO L93 Difference]: Finished difference Result 341 states and 516 transitions. [2023-11-06 22:19:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:40,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-06 22:19:40,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:40,503 INFO L225 Difference]: With dead ends: 341 [2023-11-06 22:19:40,503 INFO L226 Difference]: Without dead ends: 190 [2023-11-06 22:19:40,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:19:40,507 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 162 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:40,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 350 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-06 22:19:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2023-11-06 22:19:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.46524064171123) internal successors, (274), 187 states have internal predecessors, (274), 0 states have call successors, (0), 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 22:19:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 274 transitions. [2023-11-06 22:19:40,542 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 274 transitions. Word has length 55 [2023-11-06 22:19:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:40,544 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 274 transitions. [2023-11-06 22:19:40,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:19:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 274 transitions. [2023-11-06 22:19:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:19:40,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:40,548 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] [2023-11-06 22:19:40,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:19:40,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:40,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1687762504, now seen corresponding path program 1 times [2023-11-06 22:19:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534876414] [2023-11-06 22:19:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:40,911 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 22:19:40,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:40,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534876414] [2023-11-06 22:19:40,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534876414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:40,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:40,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:19:40,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173540990] [2023-11-06 22:19:40,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:40,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:19:40,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:40,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:19:40,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:19:40,915 INFO L87 Difference]: Start difference. First operand 188 states and 274 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:41,038 INFO L93 Difference]: Finished difference Result 307 states and 463 transitions. [2023-11-06 22:19:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:19:41,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-06 22:19:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:41,042 INFO L225 Difference]: With dead ends: 307 [2023-11-06 22:19:41,043 INFO L226 Difference]: Without dead ends: 305 [2023-11-06 22:19:41,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:19:41,045 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 131 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:41,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 863 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-06 22:19:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 194. [2023-11-06 22:19:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4455958549222798) internal successors, (279), 193 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2023-11-06 22:19:41,075 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 56 [2023-11-06 22:19:41,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:41,076 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2023-11-06 22:19:41,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2023-11-06 22:19:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:19:41,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:41,085 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] [2023-11-06 22:19:41,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:19:41,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:41,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -407583458, now seen corresponding path program 1 times [2023-11-06 22:19:41,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:41,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355416599] [2023-11-06 22:19:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:41,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:41,177 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 22:19:41,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:41,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355416599] [2023-11-06 22:19:41,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355416599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:41,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493765617] [2023-11-06 22:19:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:41,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:41,180 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:41,227 INFO L93 Difference]: Finished difference Result 364 states and 540 transitions. [2023-11-06 22:19:41,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-06 22:19:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:41,231 INFO L225 Difference]: With dead ends: 364 [2023-11-06 22:19:41,231 INFO L226 Difference]: Without dead ends: 276 [2023-11-06 22:19:41,232 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 22:19:41,233 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 224 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 22:19:41,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-06 22:19:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 274. [2023-11-06 22:19:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.465201465201465) internal successors, (400), 273 states have internal predecessors, (400), 0 states have call successors, (0), 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 22:19:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 400 transitions. [2023-11-06 22:19:41,278 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 400 transitions. Word has length 57 [2023-11-06 22:19:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:41,278 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 400 transitions. [2023-11-06 22:19:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 400 transitions. [2023-11-06 22:19:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:19:41,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:41,280 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] [2023-11-06 22:19:41,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:19:41,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:41,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1094534942, now seen corresponding path program 1 times [2023-11-06 22:19:41,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:41,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874431204] [2023-11-06 22:19:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:41,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:41,342 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 22:19:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874431204] [2023-11-06 22:19:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874431204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:41,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:41,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:41,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768489209] [2023-11-06 22:19:41,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:41,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:41,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:41,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:41,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:41,345 INFO L87 Difference]: Start difference. First operand 274 states and 400 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:41,442 INFO L93 Difference]: Finished difference Result 720 states and 1080 transitions. [2023-11-06 22:19:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-06 22:19:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:41,446 INFO L225 Difference]: With dead ends: 720 [2023-11-06 22:19:41,446 INFO L226 Difference]: Without dead ends: 485 [2023-11-06 22:19:41,447 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 22:19:41,448 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 53 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 224 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 22:19:41,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:41,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-06 22:19:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2023-11-06 22:19:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4771784232365146) internal successors, (712), 482 states have internal predecessors, (712), 0 states have call successors, (0), 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 22:19:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 712 transitions. [2023-11-06 22:19:41,535 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 712 transitions. Word has length 57 [2023-11-06 22:19:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:41,536 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 712 transitions. [2023-11-06 22:19:41,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 712 transitions. [2023-11-06 22:19:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:19:41,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:41,538 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] [2023-11-06 22:19:41,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:19:41,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:41,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:41,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1120933858, now seen corresponding path program 1 times [2023-11-06 22:19:41,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:41,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031098658] [2023-11-06 22:19:41,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:41,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:41,602 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 22:19:41,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031098658] [2023-11-06 22:19:41,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031098658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:41,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648396010] [2023-11-06 22:19:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:41,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:41,606 INFO L87 Difference]: Start difference. First operand 483 states and 712 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:41,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:41,754 INFO L93 Difference]: Finished difference Result 1323 states and 1974 transitions. [2023-11-06 22:19:41,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:41,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-06 22:19:41,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:41,761 INFO L225 Difference]: With dead ends: 1323 [2023-11-06 22:19:41,761 INFO L226 Difference]: Without dead ends: 879 [2023-11-06 22:19:41,762 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 22:19:41,763 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 51 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 226 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 22:19:41,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 226 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:41,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-11-06 22:19:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-11-06 22:19:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.4703196347031964) internal successors, (1288), 876 states have internal predecessors, (1288), 0 states have call successors, (0), 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 22:19:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1288 transitions. [2023-11-06 22:19:41,913 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1288 transitions. Word has length 57 [2023-11-06 22:19:41,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:41,913 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1288 transitions. [2023-11-06 22:19:41,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1288 transitions. [2023-11-06 22:19:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:19:41,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:41,915 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] [2023-11-06 22:19:41,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:19:41,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:41,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 659999006, now seen corresponding path program 1 times [2023-11-06 22:19:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110382115] [2023-11-06 22:19:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:41,990 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 22:19:41,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:41,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110382115] [2023-11-06 22:19:41,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110382115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:41,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:41,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710857858] [2023-11-06 22:19:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:41,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:41,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:41,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:41,993 INFO L87 Difference]: Start difference. First operand 877 states and 1288 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:42,288 INFO L93 Difference]: Finished difference Result 2457 states and 3618 transitions. [2023-11-06 22:19:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:42,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-06 22:19:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:42,299 INFO L225 Difference]: With dead ends: 2457 [2023-11-06 22:19:42,300 INFO L226 Difference]: Without dead ends: 1619 [2023-11-06 22:19:42,301 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 22:19:42,302 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 49 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 228 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 22:19:42,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2023-11-06 22:19:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1617. [2023-11-06 22:19:42,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1616 states have (on average 1.4504950495049505) internal successors, (2344), 1616 states have internal predecessors, (2344), 0 states have call successors, (0), 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 22:19:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2344 transitions. [2023-11-06 22:19:42,638 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2344 transitions. Word has length 57 [2023-11-06 22:19:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:42,638 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2344 transitions. [2023-11-06 22:19:42,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2344 transitions. [2023-11-06 22:19:42,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:19:42,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:42,640 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] [2023-11-06 22:19:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:19:42,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:42,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash -143727074, now seen corresponding path program 1 times [2023-11-06 22:19:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:42,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065249926] [2023-11-06 22:19:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:42,701 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 22:19:42,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:42,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065249926] [2023-11-06 22:19:42,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065249926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:42,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:42,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:19:42,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973354958] [2023-11-06 22:19:42,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:42,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:19:42,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:42,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:19:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:19:42,704 INFO L87 Difference]: Start difference. First operand 1617 states and 2344 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:43,270 INFO L93 Difference]: Finished difference Result 4581 states and 6618 transitions. [2023-11-06 22:19:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:19:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-06 22:19:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:43,288 INFO L225 Difference]: With dead ends: 4581 [2023-11-06 22:19:43,289 INFO L226 Difference]: Without dead ends: 3003 [2023-11-06 22:19:43,291 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 22:19:43,292 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 55 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 230 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 22:19:43,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 230 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:19:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2023-11-06 22:19:43,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3001. [2023-11-06 22:19:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 3000 states have (on average 1.4213333333333333) internal successors, (4264), 3000 states have internal predecessors, (4264), 0 states have call successors, (0), 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 22:19:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4264 transitions. [2023-11-06 22:19:43,839 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4264 transitions. Word has length 57 [2023-11-06 22:19:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:43,839 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 4264 transitions. [2023-11-06 22:19:43,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 22:19:43,840 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4264 transitions. [2023-11-06 22:19:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:19:43,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:43,848 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:19:43,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:19:43,848 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:43,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:43,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1172786557, now seen corresponding path program 1 times [2023-11-06 22:19:43,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:43,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283623823] [2023-11-06 22:19:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:43,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:19:44,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:44,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283623823] [2023-11-06 22:19:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283623823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:44,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:44,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:44,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330219793] [2023-11-06 22:19:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:44,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:44,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:44,073 INFO L87 Difference]: Start difference. First operand 3001 states and 4264 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 22:19:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:46,579 INFO L93 Difference]: Finished difference Result 17605 states and 25070 transitions. [2023-11-06 22:19:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 76 [2023-11-06 22:19:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:46,664 INFO L225 Difference]: With dead ends: 17605 [2023-11-06 22:19:46,664 INFO L226 Difference]: Without dead ends: 15491 [2023-11-06 22:19:46,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:46,671 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 549 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:46,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 710 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15491 states. [2023-11-06 22:19:47,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15491 to 5545. [2023-11-06 22:19:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5545 states, 5544 states have (on average 1.4155844155844155) internal successors, (7848), 5544 states have internal predecessors, (7848), 0 states have call successors, (0), 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 22:19:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5545 states to 5545 states and 7848 transitions. [2023-11-06 22:19:47,779 INFO L78 Accepts]: Start accepts. Automaton has 5545 states and 7848 transitions. Word has length 76 [2023-11-06 22:19:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:47,780 INFO L495 AbstractCegarLoop]: Abstraction has 5545 states and 7848 transitions. [2023-11-06 22:19:47,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 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 22:19:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 5545 states and 7848 transitions. [2023-11-06 22:19:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:19:47,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:47,784 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:19:47,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:19:47,784 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:47,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash 329331843, now seen corresponding path program 1 times [2023-11-06 22:19:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:47,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17203868] [2023-11-06 22:19:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:19:47,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:47,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17203868] [2023-11-06 22:19:47,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17203868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:47,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:47,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:47,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604381269] [2023-11-06 22:19:47,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:48,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:48,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:48,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:48,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:48,002 INFO L87 Difference]: Start difference. First operand 5545 states and 7848 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:50,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:50,648 INFO L93 Difference]: Finished difference Result 20565 states and 29262 transitions. [2023-11-06 22:19:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:50,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-06 22:19:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:50,717 INFO L225 Difference]: With dead ends: 20565 [2023-11-06 22:19:50,717 INFO L226 Difference]: Without dead ends: 17603 [2023-11-06 22:19:50,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:50,726 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 597 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:50,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 719 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17603 states. [2023-11-06 22:19:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17603 to 9561. [2023-11-06 22:19:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9561 states, 9560 states have (on average 1.4117154811715482) internal successors, (13496), 9560 states have internal predecessors, (13496), 0 states have call successors, (0), 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 22:19:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9561 states to 9561 states and 13496 transitions. [2023-11-06 22:19:52,961 INFO L78 Accepts]: Start accepts. Automaton has 9561 states and 13496 transitions. Word has length 76 [2023-11-06 22:19:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:52,962 INFO L495 AbstractCegarLoop]: Abstraction has 9561 states and 13496 transitions. [2023-11-06 22:19:52,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:19:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9561 states and 13496 transitions. [2023-11-06 22:19:52,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:19:52,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:52,965 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:19:52,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:19:52,965 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:52,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:52,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1886136957, now seen corresponding path program 1 times [2023-11-06 22:19:52,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:52,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084324806] [2023-11-06 22:19:52,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:52,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:19:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084324806] [2023-11-06 22:19:53,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084324806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:53,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:53,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180569275] [2023-11-06 22:19:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:53,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:53,140 INFO L87 Difference]: Start difference. First operand 9561 states and 13496 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:19:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:19:55,877 INFO L93 Difference]: Finished difference Result 23525 states and 33438 transitions. [2023-11-06 22:19:55,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:19:55,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 76 [2023-11-06 22:19:55,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:19:55,928 INFO L225 Difference]: With dead ends: 23525 [2023-11-06 22:19:55,928 INFO L226 Difference]: Without dead ends: 20563 [2023-11-06 22:19:55,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:19:55,941 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 643 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:19:55,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 684 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:19:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20563 states. [2023-11-06 22:19:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20563 to 12521. [2023-11-06 22:19:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12521 states, 12520 states have (on average 1.4115015974440894) internal successors, (17672), 12520 states have internal predecessors, (17672), 0 states have call successors, (0), 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 22:19:58,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12521 states to 12521 states and 17672 transitions. [2023-11-06 22:19:58,276 INFO L78 Accepts]: Start accepts. Automaton has 12521 states and 17672 transitions. Word has length 76 [2023-11-06 22:19:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:19:58,277 INFO L495 AbstractCegarLoop]: Abstraction has 12521 states and 17672 transitions. [2023-11-06 22:19:58,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:19:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 12521 states and 17672 transitions. [2023-11-06 22:19:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:19:58,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:19:58,280 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:19:58,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:19:58,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:19:58,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:19:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash -105204093, now seen corresponding path program 1 times [2023-11-06 22:19:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:19:58,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894789892] [2023-11-06 22:19:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:19:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:19:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:19:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:19:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:19:58,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894789892] [2023-11-06 22:19:58,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894789892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:19:58,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:19:58,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:19:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094277365] [2023-11-06 22:19:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:19:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:19:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:19:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:19:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:19:58,436 INFO L87 Difference]: Start difference. First operand 12521 states and 17672 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 22:20:01,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:01,748 INFO L93 Difference]: Finished difference Result 26485 states and 37614 transitions. [2023-11-06 22:20:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:20:01,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 76 [2023-11-06 22:20:01,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:01,802 INFO L225 Difference]: With dead ends: 26485 [2023-11-06 22:20:01,803 INFO L226 Difference]: Without dead ends: 23523 [2023-11-06 22:20:01,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:20:01,813 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 599 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:01,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 726 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23523 states. [2023-11-06 22:20:04,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23523 to 15481. [2023-11-06 22:20:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 1.4113695090439276) internal successors, (21848), 15480 states have internal predecessors, (21848), 0 states have call successors, (0), 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 22:20:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 21848 transitions. [2023-11-06 22:20:04,241 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 21848 transitions. Word has length 76 [2023-11-06 22:20:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:04,241 INFO L495 AbstractCegarLoop]: Abstraction has 15481 states and 21848 transitions. [2023-11-06 22:20:04,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 22:20:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 21848 transitions. [2023-11-06 22:20:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 22:20:04,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:04,246 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:04,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:20:04,246 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:04,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash -908930173, now seen corresponding path program 1 times [2023-11-06 22:20:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312583870] [2023-11-06 22:20:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:20:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:04,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312583870] [2023-11-06 22:20:04,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312583870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:04,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:20:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760478923] [2023-11-06 22:20:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:04,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:20:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:20:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:20:04,432 INFO L87 Difference]: Start difference. First operand 15481 states and 21848 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 22:20:08,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:08,727 INFO L93 Difference]: Finished difference Result 29445 states and 41790 transitions. [2023-11-06 22:20:08,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:20:08,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 76 [2023-11-06 22:20:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:08,795 INFO L225 Difference]: With dead ends: 29445 [2023-11-06 22:20:08,795 INFO L226 Difference]: Without dead ends: 26483 [2023-11-06 22:20:08,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:20:08,808 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 553 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:08,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 806 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:20:08,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26483 states. [2023-11-06 22:20:11,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26483 to 18441. [2023-11-06 22:20:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.4112798264642084) internal successors, (26024), 18440 states have internal predecessors, (26024), 0 states have call successors, (0), 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 22:20:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 26024 transitions. [2023-11-06 22:20:11,838 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 26024 transitions. Word has length 76 [2023-11-06 22:20:11,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:11,838 INFO L495 AbstractCegarLoop]: Abstraction has 18441 states and 26024 transitions. [2023-11-06 22:20:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 22:20:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 26024 transitions. [2023-11-06 22:20:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:20:11,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:11,843 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:11,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:20:11,843 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:11,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:11,844 INFO L85 PathProgramCache]: Analyzing trace with hash -981258812, now seen corresponding path program 1 times [2023-11-06 22:20:11,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:11,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480247470] [2023-11-06 22:20:11,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:11,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:11,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:11,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480247470] [2023-11-06 22:20:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480247470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:11,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:11,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:11,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071664503] [2023-11-06 22:20:11,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:11,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:11,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:11,950 INFO L87 Difference]: Start difference. First operand 18441 states and 26024 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 22:20:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:14,572 INFO L93 Difference]: Finished difference Result 36845 states and 52010 transitions. [2023-11-06 22:20:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:14,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-11-06 22:20:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:14,604 INFO L225 Difference]: With dead ends: 36845 [2023-11-06 22:20:14,604 INFO L226 Difference]: Without dead ends: 18443 [2023-11-06 22:20:14,628 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 22:20:14,628 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 45 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:14,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 230 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18443 states. [2023-11-06 22:20:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18443 to 18441. [2023-11-06 22:20:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18441 states, 18440 states have (on average 1.3952277657266812) internal successors, (25728), 18440 states have internal predecessors, (25728), 0 states have call successors, (0), 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 22:20:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18441 states to 18441 states and 25728 transitions. [2023-11-06 22:20:17,518 INFO L78 Accepts]: Start accepts. Automaton has 18441 states and 25728 transitions. Word has length 77 [2023-11-06 22:20:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:17,518 INFO L495 AbstractCegarLoop]: Abstraction has 18441 states and 25728 transitions. [2023-11-06 22:20:17,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 22:20:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 18441 states and 25728 transitions. [2023-11-06 22:20:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:20:17,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:17,522 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:17,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:20:17,522 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:17,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1342228763, now seen corresponding path program 1 times [2023-11-06 22:20:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:17,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683272349] [2023-11-06 22:20:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683272349] [2023-11-06 22:20:17,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683272349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:17,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:17,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:17,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946763923] [2023-11-06 22:20:17,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:17,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:17,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:17,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:17,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:17,622 INFO L87 Difference]: Start difference. First operand 18441 states and 25728 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:20:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:18,939 INFO L93 Difference]: Finished difference Result 25328 states and 35422 transitions. [2023-11-06 22:20:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:18,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-06 22:20:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:18,955 INFO L225 Difference]: With dead ends: 25328 [2023-11-06 22:20:18,955 INFO L226 Difference]: Without dead ends: 6926 [2023-11-06 22:20:18,976 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 22:20:18,977 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 39 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:18,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 227 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2023-11-06 22:20:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 6918. [2023-11-06 22:20:20,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6917 states have (on average 1.3909209194737604) internal successors, (9621), 6917 states have internal predecessors, (9621), 0 states have call successors, (0), 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 22:20:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9621 transitions. [2023-11-06 22:20:20,413 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9621 transitions. Word has length 78 [2023-11-06 22:20:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 6918 states and 9621 transitions. [2023-11-06 22:20:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 22:20:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9621 transitions. [2023-11-06 22:20:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-06 22:20:20,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:20,417 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:20,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:20:20,418 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:20,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1119392618, now seen corresponding path program 1 times [2023-11-06 22:20:20,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640891329] [2023-11-06 22:20:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:20,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:20,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640891329] [2023-11-06 22:20:20,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640891329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:20,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:20,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874619200] [2023-11-06 22:20:20,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:20,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:20,557 INFO L87 Difference]: Start difference. First operand 6918 states and 9621 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:20:21,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:21,471 INFO L93 Difference]: Finished difference Result 10354 states and 14407 transitions. [2023-11-06 22:20:21,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:21,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-06 22:20:21,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:21,475 INFO L225 Difference]: With dead ends: 10354 [2023-11-06 22:20:21,476 INFO L226 Difference]: Without dead ends: 3488 [2023-11-06 22:20:21,481 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 22:20:21,482 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 41 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:21,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 206 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2023-11-06 22:20:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3486. [2023-11-06 22:20:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3486 states, 3485 states have (on average 1.3730272596843616) internal successors, (4785), 3485 states have internal predecessors, (4785), 0 states have call successors, (0), 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 22:20:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3486 states to 3486 states and 4785 transitions. [2023-11-06 22:20:21,987 INFO L78 Accepts]: Start accepts. Automaton has 3486 states and 4785 transitions. Word has length 79 [2023-11-06 22:20:21,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:21,988 INFO L495 AbstractCegarLoop]: Abstraction has 3486 states and 4785 transitions. [2023-11-06 22:20:21,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 22:20:21,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3486 states and 4785 transitions. [2023-11-06 22:20:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 22:20:21,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:21,990 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:20:21,991 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:21,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1495153128, now seen corresponding path program 1 times [2023-11-06 22:20:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:21,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222139336] [2023-11-06 22:20:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:22,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:22,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222139336] [2023-11-06 22:20:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222139336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:22,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252810897] [2023-11-06 22:20:22,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:22,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:22,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:22,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:22,094 INFO L87 Difference]: Start difference. First operand 3486 states and 4785 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:22,501 INFO L93 Difference]: Finished difference Result 5206 states and 7153 transitions. [2023-11-06 22:20:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:22,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-11-06 22:20:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:22,504 INFO L225 Difference]: With dead ends: 5206 [2023-11-06 22:20:22,505 INFO L226 Difference]: Without dead ends: 1772 [2023-11-06 22:20:22,507 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 22:20:22,511 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 38 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:22,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 191 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1772 states. [2023-11-06 22:20:22,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1772 to 1770. [2023-11-06 22:20:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1769 states have (on average 1.3527416619559074) internal successors, (2393), 1769 states have internal predecessors, (2393), 0 states have call successors, (0), 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 22:20:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2393 transitions. [2023-11-06 22:20:22,779 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2393 transitions. Word has length 81 [2023-11-06 22:20:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:22,779 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2393 transitions. [2023-11-06 22:20:22,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:20:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2393 transitions. [2023-11-06 22:20:22,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-06 22:20:22,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:22,781 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:20:22,782 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:22,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash 572569018, now seen corresponding path program 1 times [2023-11-06 22:20:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121220126] [2023-11-06 22:20:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:22,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:22,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121220126] [2023-11-06 22:20:22,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121220126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:22,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:22,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966257702] [2023-11-06 22:20:22,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:22,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:22,880 INFO L87 Difference]: Start difference. First operand 1770 states and 2393 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 22:20:23,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:23,055 INFO L93 Difference]: Finished difference Result 2632 states and 3565 transitions. [2023-11-06 22:20:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:23,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-06 22:20:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:23,057 INFO L225 Difference]: With dead ends: 2632 [2023-11-06 22:20:23,057 INFO L226 Difference]: Without dead ends: 914 [2023-11-06 22:20:23,058 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 22:20:23,059 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:23,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 176 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:20:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2023-11-06 22:20:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 912. [2023-11-06 22:20:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 1.3282107574094402) internal successors, (1210), 911 states have internal predecessors, (1210), 0 states have call successors, (0), 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 22:20:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1210 transitions. [2023-11-06 22:20:23,191 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1210 transitions. Word has length 83 [2023-11-06 22:20:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:23,191 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1210 transitions. [2023-11-06 22:20:23,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 22:20:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1210 transitions. [2023-11-06 22:20:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-06 22:20:23,192 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:23,193 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:23,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:20:23,193 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:23,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1095761932, now seen corresponding path program 1 times [2023-11-06 22:20:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63875269] [2023-11-06 22:20:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:23,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63875269] [2023-11-06 22:20:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63875269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925819073] [2023-11-06 22:20:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:24,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:24,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:24,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:24,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:24,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:20:24,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:25,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:25,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925819073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:25,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:25,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2023-11-06 22:20:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880186893] [2023-11-06 22:20:25,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:25,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:20:25,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:20:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:20:25,509 INFO L87 Difference]: Start difference. First operand 912 states and 1210 transitions. Second operand has 19 states, 19 states have (on average 12.578947368421053) internal successors, (239), 19 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:20:30,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:30,218 INFO L93 Difference]: Finished difference Result 7666 states and 10185 transitions. [2023-11-06 22:20:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-06 22:20:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.578947368421053) internal successors, (239), 19 states have internal predecessors, (239), 0 states have call successors, (0), 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 85 [2023-11-06 22:20:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:30,230 INFO L225 Difference]: With dead ends: 7666 [2023-11-06 22:20:30,230 INFO L226 Difference]: Without dead ends: 6806 [2023-11-06 22:20:30,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=799, Invalid=3623, Unknown=0, NotChecked=0, Total=4422 [2023-11-06 22:20:30,237 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 2561 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:30,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2561 Valid, 769 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:20:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2023-11-06 22:20:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 6382. [2023-11-06 22:20:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6382 states, 6381 states have (on average 1.2994828396803009) internal successors, (8292), 6381 states have internal predecessors, (8292), 0 states have call successors, (0), 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 22:20:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6382 states to 6382 states and 8292 transitions. [2023-11-06 22:20:31,409 INFO L78 Accepts]: Start accepts. Automaton has 6382 states and 8292 transitions. Word has length 85 [2023-11-06 22:20:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:31,409 INFO L495 AbstractCegarLoop]: Abstraction has 6382 states and 8292 transitions. [2023-11-06 22:20:31,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.578947368421053) internal successors, (239), 19 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:20:31,409 INFO L276 IsEmpty]: Start isEmpty. Operand 6382 states and 8292 transitions. [2023-11-06 22:20:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:20:31,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:31,411 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:20:31,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:20:31,618 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:31,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash 840781523, now seen corresponding path program 1 times [2023-11-06 22:20:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:31,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730675251] [2023-11-06 22:20:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:33,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:33,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730675251] [2023-11-06 22:20:33,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730675251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:33,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011188280] [2023-11-06 22:20:33,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:33,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:33,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:33,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:33,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:33,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:20:33,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:34,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:35,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011188280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:35,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:35,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2023-11-06 22:20:35,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247855729] [2023-11-06 22:20:35,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:20:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:20:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:20:35,377 INFO L87 Difference]: Start difference. First operand 6382 states and 8292 transitions. Second operand has 26 states, 26 states have (on average 7.961538461538462) internal successors, (207), 25 states have internal predecessors, (207), 0 states have call successors, (0), 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 22:20:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:38,833 INFO L93 Difference]: Finished difference Result 18592 states and 24033 transitions. [2023-11-06 22:20:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:20:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.961538461538462) internal successors, (207), 25 states have internal predecessors, (207), 0 states have call successors, (0), 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 86 [2023-11-06 22:20:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:38,848 INFO L225 Difference]: With dead ends: 18592 [2023-11-06 22:20:38,848 INFO L226 Difference]: Without dead ends: 12507 [2023-11-06 22:20:38,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=1034, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:20:38,855 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 922 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:38,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 553 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:20:38,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2023-11-06 22:20:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 11915. [2023-11-06 22:20:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11915 states, 11914 states have (on average 1.2769011247272117) internal successors, (15213), 11914 states have internal predecessors, (15213), 0 states have call successors, (0), 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 22:20:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11915 states to 11915 states and 15213 transitions. [2023-11-06 22:20:41,313 INFO L78 Accepts]: Start accepts. Automaton has 11915 states and 15213 transitions. Word has length 86 [2023-11-06 22:20:41,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:41,313 INFO L495 AbstractCegarLoop]: Abstraction has 11915 states and 15213 transitions. [2023-11-06 22:20:41,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.961538461538462) internal successors, (207), 25 states have internal predecessors, (207), 0 states have call successors, (0), 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 22:20:41,313 INFO L276 IsEmpty]: Start isEmpty. Operand 11915 states and 15213 transitions. [2023-11-06 22:20:41,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:20:41,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:41,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:41,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:20:41,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:20:41,524 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:41,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1160425915, now seen corresponding path program 1 times [2023-11-06 22:20:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420680312] [2023-11-06 22:20:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420680312] [2023-11-06 22:20:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420680312] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411183457] [2023-11-06 22:20:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:42,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:42,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:20:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:42,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:20:42,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:42,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411183457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:44,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:44,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-06 22:20:44,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595052258] [2023-11-06 22:20:44,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:44,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:20:44,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:20:44,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:20:44,382 INFO L87 Difference]: Start difference. First operand 11915 states and 15213 transitions. Second operand has 27 states, 27 states have (on average 8.25925925925926) internal successors, (223), 27 states have internal predecessors, (223), 0 states have call successors, (0), 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 22:20:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:20:48,430 INFO L93 Difference]: Finished difference Result 25196 states and 32230 transitions. [2023-11-06 22:20:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:20:48,431 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.25925925925926) internal successors, (223), 27 states have internal predecessors, (223), 0 states have call successors, (0), 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 86 [2023-11-06 22:20:48,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:20:48,446 INFO L225 Difference]: With dead ends: 25196 [2023-11-06 22:20:48,446 INFO L226 Difference]: Without dead ends: 14511 [2023-11-06 22:20:48,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2023-11-06 22:20:48,455 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 858 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:20:48,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 754 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:20:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14511 states. [2023-11-06 22:20:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14511 to 13959. [2023-11-06 22:20:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13959 states, 13958 states have (on average 1.2802693795672733) internal successors, (17870), 13958 states have internal predecessors, (17870), 0 states have call successors, (0), 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 22:20:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13959 states to 13959 states and 17870 transitions. [2023-11-06 22:20:51,373 INFO L78 Accepts]: Start accepts. Automaton has 13959 states and 17870 transitions. Word has length 86 [2023-11-06 22:20:51,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:20:51,373 INFO L495 AbstractCegarLoop]: Abstraction has 13959 states and 17870 transitions. [2023-11-06 22:20:51,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.25925925925926) internal successors, (223), 27 states have internal predecessors, (223), 0 states have call successors, (0), 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 22:20:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 13959 states and 17870 transitions. [2023-11-06 22:20:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:20:51,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:20:51,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:20:51,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-06 22:20:51,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:20:51,581 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:20:51,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -537738683, now seen corresponding path program 1 times [2023-11-06 22:20:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:51,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279411883] [2023-11-06 22:20:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:52,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:52,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279411883] [2023-11-06 22:20:52,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279411883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:52,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891001801] [2023-11-06 22:20:52,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:52,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:52,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:52,141 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:52,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:20:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:52,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:20:52,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:52,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:52,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:20:54,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891001801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:54,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:54,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-11-06 22:20:54,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109460172] [2023-11-06 22:20:54,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:54,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-06 22:20:54,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:54,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-06 22:20:54,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:20:54,010 INFO L87 Difference]: Start difference. First operand 13959 states and 17870 transitions. Second operand has 25 states, 25 states have (on average 9.72) internal successors, (243), 24 states have internal predecessors, (243), 0 states have call successors, (0), 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 22:21:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:03,686 INFO L93 Difference]: Finished difference Result 43441 states and 55483 transitions. [2023-11-06 22:21:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-06 22:21:03,687 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.72) internal successors, (243), 24 states have internal predecessors, (243), 0 states have call successors, (0), 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 86 [2023-11-06 22:21:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:03,722 INFO L225 Difference]: With dead ends: 43441 [2023-11-06 22:21:03,722 INFO L226 Difference]: Without dead ends: 30492 [2023-11-06 22:21:03,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=665, Invalid=2641, Unknown=0, NotChecked=0, Total=3306 [2023-11-06 22:21:03,733 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1596 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:03,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 1036 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:21:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30492 states. [2023-11-06 22:21:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30492 to 26660. [2023-11-06 22:21:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26660 states, 26659 states have (on average 1.2463333208297385) internal successors, (33226), 26659 states have internal predecessors, (33226), 0 states have call successors, (0), 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 22:21:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26660 states to 26660 states and 33226 transitions. [2023-11-06 22:21:10,399 INFO L78 Accepts]: Start accepts. Automaton has 26660 states and 33226 transitions. Word has length 86 [2023-11-06 22:21:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:10,399 INFO L495 AbstractCegarLoop]: Abstraction has 26660 states and 33226 transitions. [2023-11-06 22:21:10,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.72) internal successors, (243), 24 states have internal predecessors, (243), 0 states have call successors, (0), 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 22:21:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 26660 states and 33226 transitions. [2023-11-06 22:21:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-06 22:21:10,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:10,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:10,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:10,605 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:10,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1413658581, now seen corresponding path program 1 times [2023-11-06 22:21:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070178957] [2023-11-06 22:21:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:10,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:10,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070178957] [2023-11-06 22:21:10,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070178957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993043862] [2023-11-06 22:21:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:10,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:10,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:10,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:10,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:21:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:11,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:21:11,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:11,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:21:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:12,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993043862] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:21:12,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:21:12,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-06 22:21:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124957803] [2023-11-06 22:21:12,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:21:12,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:21:12,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:21:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:21:12,378 INFO L87 Difference]: Start difference. First operand 26660 states and 33226 transitions. Second operand has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 22 states have internal predecessors, (198), 0 states have call successors, (0), 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 22:21:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:21:27,579 INFO L93 Difference]: Finished difference Result 79812 states and 99607 transitions. [2023-11-06 22:21:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:21:27,580 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 22 states have internal predecessors, (198), 0 states have call successors, (0), 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 88 [2023-11-06 22:21:27,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:21:27,646 INFO L225 Difference]: With dead ends: 79812 [2023-11-06 22:21:27,646 INFO L226 Difference]: Without dead ends: 56171 [2023-11-06 22:21:27,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:21:27,663 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 767 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:21:27,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 566 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:21:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56171 states. [2023-11-06 22:21:42,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56171 to 53699. [2023-11-06 22:21:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53699 states, 53698 states have (on average 1.2336399865916794) internal successors, (66244), 53698 states have internal predecessors, (66244), 0 states have call successors, (0), 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 22:21:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53699 states to 53699 states and 66244 transitions. [2023-11-06 22:21:43,046 INFO L78 Accepts]: Start accepts. Automaton has 53699 states and 66244 transitions. Word has length 88 [2023-11-06 22:21:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:21:43,047 INFO L495 AbstractCegarLoop]: Abstraction has 53699 states and 66244 transitions. [2023-11-06 22:21:43,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.608695652173912) internal successors, (198), 22 states have internal predecessors, (198), 0 states have call successors, (0), 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 22:21:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 53699 states and 66244 transitions. [2023-11-06 22:21:43,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:21:43,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:21:43,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:21:43,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:21:43,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:21:43,253 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:21:43,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1105486562, now seen corresponding path program 1 times [2023-11-06 22:21:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:43,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124245981] [2023-11-06 22:21:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:47,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:47,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124245981] [2023-11-06 22:21:47,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124245981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:21:47,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218493693] [2023-11-06 22:21:47,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:47,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:21:47,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:47,234 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:21:47,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_142598b9-0d02-49cd-a815-4f5e34e1453d/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:21:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:47,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-06 22:21:47,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:21:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:21:54,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218493693] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:00,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:22:00,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 20] total 71 [2023-11-06 22:22:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395040610] [2023-11-06 22:22:00,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-11-06 22:22:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-11-06 22:22:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=4629, Unknown=0, NotChecked=0, Total=4970 [2023-11-06 22:22:00,197 INFO L87 Difference]: Start difference. First operand 53699 states and 66244 transitions. Second operand has 71 states, 71 states have (on average 3.464788732394366) internal successors, (246), 71 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)