./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 e434f2d86227d38c1c2a04ff8bca16de95195c35648228e2b922536dedadd129 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:17,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:17,996 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:35:18,001 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:18,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:18,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:18,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:18,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:18,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:18,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:18,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:18,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:18,037 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:18,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:18,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:35:18,039 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:18,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:18,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:18,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:18,041 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:35:18,041 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:18,042 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:35:18,043 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:18,043 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:35:18,044 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:18,044 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:18,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:18,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:18,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:18,046 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:18,046 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:18,047 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:35:18,047 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:18,047 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:18,048 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:18,048 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:35:18,048 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:18,048 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:18,049 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:18,049 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_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e434f2d86227d38c1c2a04ff8bca16de95195c35648228e2b922536dedadd129 [2023-11-19 07:35:18,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:18,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:18,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:18,375 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:18,376 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:18,377 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-11-19 07:35:21,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:21,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:21,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-11-19 07:35:21,762 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/data/870cefe54/23ac75ff308344bba1b67e9f1539fbb8/FLAG88249a996 [2023-11-19 07:35:21,779 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/data/870cefe54/23ac75ff308344bba1b67e9f1539fbb8 [2023-11-19 07:35:21,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:21,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:21,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:21,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:21,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:21,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:21" (1/1) ... [2023-11-19 07:35:21,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d199a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:21, skipping insertion in model container [2023-11-19 07:35:21,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:21" (1/1) ... [2023-11-19 07:35:21,873 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:22,273 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_0643c25c-d01b-4eb9-b344-453a422ff5f8/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c[31172,31185] [2023-11-19 07:35:22,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:22,291 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:22,379 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_0643c25c-d01b-4eb9-b344-453a422ff5f8/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c[31172,31185] [2023-11-19 07:35:22,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:22,398 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:22,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22 WrapperNode [2023-11-19 07:35:22,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:22,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:22,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:22,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:22,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,501 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1003 [2023-11-19 07:35:22,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:22,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:22,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:22,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:22,525 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,570 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:22,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:22,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:22,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:22,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (1/1) ... [2023-11-19 07:35:22,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:22,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:22,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0643c25c-d01b-4eb9-b344-453a422ff5f8/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:22,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:22,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:22,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:22,864 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:22,866 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:24,064 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:24,077 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:24,077 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:35:24,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:24 BoogieIcfgContainer [2023-11-19 07:35:24,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:24,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:24,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:24,090 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:24,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:21" (1/3) ... [2023-11-19 07:35:24,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a12a673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:24, skipping insertion in model container [2023-11-19 07:35:24,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:22" (2/3) ... [2023-11-19 07:35:24,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a12a673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:24, skipping insertion in model container [2023-11-19 07:35:24,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:24" (3/3) ... [2023-11-19 07:35:24,094 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c [2023-11-19 07:35:24,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:24,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:35:24,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:24,182 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1126b2ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:24,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:35:24,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 308 states, 306 states have (on average 1.8235294117647058) internal successors, (558), 307 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:35:24,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:24,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:24,209 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:24,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1037994416, now seen corresponding path program 1 times [2023-11-19 07:35:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:24,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131457872] [2023-11-19 07:35:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:24,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:24,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131457872] [2023-11-19 07:35:24,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131457872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:24,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:24,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:24,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238271419] [2023-11-19 07:35:24,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:24,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:35:24,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:35:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:35:24,795 INFO L87 Difference]: Start difference. First operand has 308 states, 306 states have (on average 1.8235294117647058) internal successors, (558), 307 states have internal predecessors, (558), 0 states have call successors, (0), 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 38.5) internal successors, (77), 2 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) [2023-11-19 07:35:24,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:24,842 INFO L93 Difference]: Finished difference Result 417 states and 751 transitions. [2023-11-19 07:35:24,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:35:24,845 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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 [2023-11-19 07:35:24,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:24,864 INFO L225 Difference]: With dead ends: 417 [2023-11-19 07:35:24,865 INFO L226 Difference]: Without dead ends: 304 [2023-11-19 07:35:24,868 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 [2023-11-19 07:35:24,871 INFO L413 NwaCegarLoop]: 551 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, 551 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 [2023-11-19 07:35:24,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-19 07:35:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-19 07:35:24,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.8184818481848184) internal successors, (551), 303 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 551 transitions. [2023-11-19 07:35:25,003 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 551 transitions. Word has length 77 [2023-11-19 07:35:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:25,007 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 551 transitions. [2023-11-19 07:35:25,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 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) [2023-11-19 07:35:25,008 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 551 transitions. [2023-11-19 07:35:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:35:25,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:25,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:25,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:25,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:25,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:25,017 INFO L85 PathProgramCache]: Analyzing trace with hash 903980910, now seen corresponding path program 1 times [2023-11-19 07:35:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:25,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588410003] [2023-11-19 07:35:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:25,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:25,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588410003] [2023-11-19 07:35:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588410003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:25,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:25,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:35:25,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092312293] [2023-11-19 07:35:25,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:25,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:25,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:25,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:25,384 INFO L87 Difference]: Start difference. First operand 304 states and 551 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2023-11-19 07:35:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:25,530 INFO L93 Difference]: Finished difference Result 416 states and 744 transitions. [2023-11-19 07:35:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:25,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 [2023-11-19 07:35:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:25,534 INFO L225 Difference]: With dead ends: 416 [2023-11-19 07:35:25,535 INFO L226 Difference]: Without dead ends: 304 [2023-11-19 07:35:25,536 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 [2023-11-19 07:35:25,538 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 2 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:25,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2145 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-19 07:35:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2023-11-19 07:35:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 1.6666666666666667) internal successors, (505), 303 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 505 transitions. [2023-11-19 07:35:25,557 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 505 transitions. Word has length 77 [2023-11-19 07:35:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:25,558 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 505 transitions. [2023-11-19 07:35:25,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2023-11-19 07:35:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 505 transitions. [2023-11-19 07:35:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-19 07:35:25,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:25,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:25,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:25,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:25,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash 683572900, now seen corresponding path program 1 times [2023-11-19 07:35:25,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:25,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759979274] [2023-11-19 07:35:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759979274] [2023-11-19 07:35:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759979274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:25,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:25,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:25,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031662434] [2023-11-19 07:35:25,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:25,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:25,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:25,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:25,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:25,835 INFO L87 Difference]: Start difference. First operand 304 states and 505 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:25,888 INFO L93 Difference]: Finished difference Result 508 states and 861 transitions. [2023-11-19 07:35:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:25,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2023-11-19 07:35:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:25,893 INFO L225 Difference]: With dead ends: 508 [2023-11-19 07:35:25,893 INFO L226 Difference]: Without dead ends: 400 [2023-11-19 07:35:25,894 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 [2023-11-19 07:35:25,896 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 158 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:25,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 946 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-19 07:35:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 397. [2023-11-19 07:35:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.6767676767676767) internal successors, (664), 396 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 664 transitions. [2023-11-19 07:35:25,925 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 664 transitions. Word has length 122 [2023-11-19 07:35:25,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:25,926 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 664 transitions. [2023-11-19 07:35:25,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 664 transitions. [2023-11-19 07:35:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-19 07:35:25,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:25,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:35:25,931 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:25,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash 879011145, now seen corresponding path program 1 times [2023-11-19 07:35:25,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:25,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902188349] [2023-11-19 07:35:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:25,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:26,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:26,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902188349] [2023-11-19 07:35:26,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902188349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:26,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:26,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:26,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832166863] [2023-11-19 07:35:26,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:26,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:26,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:26,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:26,143 INFO L87 Difference]: Start difference. First operand 397 states and 664 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:26,182 INFO L93 Difference]: Finished difference Result 779 states and 1324 transitions. [2023-11-19 07:35:26,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:26,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2023-11-19 07:35:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:26,189 INFO L225 Difference]: With dead ends: 779 [2023-11-19 07:35:26,189 INFO L226 Difference]: Without dead ends: 578 [2023-11-19 07:35:26,192 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 [2023-11-19 07:35:26,203 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 159 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:26,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 959 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-11-19 07:35:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 574. [2023-11-19 07:35:26,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.6910994764397906) internal successors, (969), 573 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 969 transitions. [2023-11-19 07:35:26,233 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 969 transitions. Word has length 125 [2023-11-19 07:35:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:26,235 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 969 transitions. [2023-11-19 07:35:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 969 transitions. [2023-11-19 07:35:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-19 07:35:26,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:26,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:26,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:26,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:26,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash -329090256, now seen corresponding path program 1 times [2023-11-19 07:35:26,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750715519] [2023-11-19 07:35:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:26,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:26,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:26,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750715519] [2023-11-19 07:35:26,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750715519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:26,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:26,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:26,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113327135] [2023-11-19 07:35:26,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:26,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:26,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:26,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:26,502 INFO L87 Difference]: Start difference. First operand 574 states and 969 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:26,552 INFO L93 Difference]: Finished difference Result 1290 states and 2203 transitions. [2023-11-19 07:35:26,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:26,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2023-11-19 07:35:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:26,560 INFO L225 Difference]: With dead ends: 1290 [2023-11-19 07:35:26,561 INFO L226 Difference]: Without dead ends: 912 [2023-11-19 07:35:26,562 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 [2023-11-19 07:35:26,565 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 152 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:26,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 960 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:26,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2023-11-19 07:35:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 906. [2023-11-19 07:35:26,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 905 states have (on average 1.6983425414364641) internal successors, (1537), 905 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1537 transitions. [2023-11-19 07:35:26,607 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1537 transitions. Word has length 128 [2023-11-19 07:35:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:26,608 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1537 transitions. [2023-11-19 07:35:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1537 transitions. [2023-11-19 07:35:26,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:35:26,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:26,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:26,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:35:26,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:26,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:26,614 INFO L85 PathProgramCache]: Analyzing trace with hash 232028309, now seen corresponding path program 1 times [2023-11-19 07:35:26,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:26,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792473462] [2023-11-19 07:35:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:26,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792473462] [2023-11-19 07:35:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792473462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669579492] [2023-11-19 07:35:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:26,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:26,839 INFO L87 Difference]: Start difference. First operand 906 states and 1537 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:26,899 INFO L93 Difference]: Finished difference Result 2246 states and 3835 transitions. [2023-11-19 07:35:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:26,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-11-19 07:35:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:26,910 INFO L225 Difference]: With dead ends: 2246 [2023-11-19 07:35:26,910 INFO L226 Difference]: Without dead ends: 1536 [2023-11-19 07:35:26,911 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 [2023-11-19 07:35:26,915 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 145 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:26,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 961 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2023-11-19 07:35:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1526. [2023-11-19 07:35:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.6977049180327868) internal successors, (2589), 1525 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2589 transitions. [2023-11-19 07:35:26,984 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2589 transitions. Word has length 131 [2023-11-19 07:35:26,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:26,985 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2589 transitions. [2023-11-19 07:35:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:26,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2589 transitions. [2023-11-19 07:35:26,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-19 07:35:26,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:26,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:26,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:35:26,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:26,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1320064068, now seen corresponding path program 1 times [2023-11-19 07:35:26,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:26,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138504023] [2023-11-19 07:35:26,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:26,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:27,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:27,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138504023] [2023-11-19 07:35:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138504023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:27,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:35:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495445724] [2023-11-19 07:35:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:27,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:27,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:27,239 INFO L87 Difference]: Start difference. First operand 1526 states and 2589 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:27,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:27,605 INFO L93 Difference]: Finished difference Result 7794 states and 13413 transitions. [2023-11-19 07:35:27,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:35:27,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-11-19 07:35:27,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:27,647 INFO L225 Difference]: With dead ends: 7794 [2023-11-19 07:35:27,647 INFO L226 Difference]: Without dead ends: 6464 [2023-11-19 07:35:27,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:35:27,651 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 1761 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:27,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 3491 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:35:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2023-11-19 07:35:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 2766. [2023-11-19 07:35:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2766 states, 2765 states have (on average 1.7019891500904158) internal successors, (4706), 2765 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:27,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 4706 transitions. [2023-11-19 07:35:27,804 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 4706 transitions. Word has length 134 [2023-11-19 07:35:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:27,804 INFO L495 AbstractCegarLoop]: Abstraction has 2766 states and 4706 transitions. [2023-11-19 07:35:27,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 4706 transitions. [2023-11-19 07:35:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 07:35:27,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:27,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:27,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:35:27,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:27,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:27,831 INFO L85 PathProgramCache]: Analyzing trace with hash -66919769, now seen corresponding path program 1 times [2023-11-19 07:35:27,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:27,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534040342] [2023-11-19 07:35:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534040342] [2023-11-19 07:35:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534040342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087010068] [2023-11-19 07:35:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:28,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:28,006 INFO L87 Difference]: Start difference. First operand 2766 states and 4706 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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) [2023-11-19 07:35:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:28,174 INFO L93 Difference]: Finished difference Result 8058 states and 13824 transitions. [2023-11-19 07:35:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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) Word has length 135 [2023-11-19 07:35:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:28,208 INFO L225 Difference]: With dead ends: 8058 [2023-11-19 07:35:28,208 INFO L226 Difference]: Without dead ends: 5488 [2023-11-19 07:35:28,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:28,214 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 547 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:28,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 1618 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:28,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2023-11-19 07:35:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 4110. [2023-11-19 07:35:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 4109 states have (on average 1.7057678267218301) internal successors, (7009), 4109 states have internal predecessors, (7009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 7009 transitions. [2023-11-19 07:35:28,390 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 7009 transitions. Word has length 135 [2023-11-19 07:35:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:28,390 INFO L495 AbstractCegarLoop]: Abstraction has 4110 states and 7009 transitions. [2023-11-19 07:35:28,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 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) [2023-11-19 07:35:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 7009 transitions. [2023-11-19 07:35:28,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-19 07:35:28,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:28,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:28,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:35:28,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:28,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash 294852179, now seen corresponding path program 1 times [2023-11-19 07:35:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:28,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248565065] [2023-11-19 07:35:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:28,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:28,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248565065] [2023-11-19 07:35:28,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248565065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:28,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:28,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:28,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820992543] [2023-11-19 07:35:28,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:28,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:28,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:28,612 INFO L87 Difference]: Start difference. First operand 4110 states and 7009 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:28,834 INFO L93 Difference]: Finished difference Result 12032 states and 20604 transitions. [2023-11-19 07:35:28,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:28,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-11-19 07:35:28,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:28,884 INFO L225 Difference]: With dead ends: 12032 [2023-11-19 07:35:28,884 INFO L226 Difference]: Without dead ends: 8118 [2023-11-19 07:35:28,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:28,891 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 545 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:28,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1619 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2023-11-19 07:35:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 6090. [2023-11-19 07:35:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6090 states, 6089 states have (on average 1.7032353424207587) internal successors, (10371), 6089 states have internal predecessors, (10371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6090 states to 6090 states and 10371 transitions. [2023-11-19 07:35:29,222 INFO L78 Accepts]: Start accepts. Automaton has 6090 states and 10371 transitions. Word has length 136 [2023-11-19 07:35:29,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:29,224 INFO L495 AbstractCegarLoop]: Abstraction has 6090 states and 10371 transitions. [2023-11-19 07:35:29,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:29,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6090 states and 10371 transitions. [2023-11-19 07:35:29,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-19 07:35:29,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:29,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:29,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:35:29,231 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:29,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1206114978, now seen corresponding path program 1 times [2023-11-19 07:35:29,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:29,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606504407] [2023-11-19 07:35:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:29,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:29,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606504407] [2023-11-19 07:35:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606504407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:29,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346114928] [2023-11-19 07:35:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:29,459 INFO L87 Difference]: Start difference. First operand 6090 states and 10371 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:29,745 INFO L93 Difference]: Finished difference Result 17912 states and 30612 transitions. [2023-11-19 07:35:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-11-19 07:35:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:29,794 INFO L225 Difference]: With dead ends: 17912 [2023-11-19 07:35:29,794 INFO L226 Difference]: Without dead ends: 12018 [2023-11-19 07:35:29,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:29,808 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 543 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:29,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1630 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12018 states. [2023-11-19 07:35:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12018 to 9020. [2023-11-19 07:35:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9020 states, 9019 states have (on average 1.700299368000887) internal successors, (15335), 9019 states have internal predecessors, (15335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 15335 transitions. [2023-11-19 07:35:30,214 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 15335 transitions. Word has length 137 [2023-11-19 07:35:30,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:30,214 INFO L495 AbstractCegarLoop]: Abstraction has 9020 states and 15335 transitions. [2023-11-19 07:35:30,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 15335 transitions. [2023-11-19 07:35:30,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:35:30,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:30,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:30,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:35:30,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:30,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash 578383914, now seen corresponding path program 1 times [2023-11-19 07:35:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:30,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791533516] [2023-11-19 07:35:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:30,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:30,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791533516] [2023-11-19 07:35:30,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791533516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:30,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:30,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:30,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956660072] [2023-11-19 07:35:30,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:30,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:30,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:30,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:30,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:30,344 INFO L87 Difference]: Start difference. First operand 9020 states and 15335 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:30,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:30,641 INFO L93 Difference]: Finished difference Result 20280 states and 34462 transitions. [2023-11-19 07:35:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:30,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-11-19 07:35:30,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:30,676 INFO L225 Difference]: With dead ends: 20280 [2023-11-19 07:35:30,677 INFO L226 Difference]: Without dead ends: 14052 [2023-11-19 07:35:30,686 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 [2023-11-19 07:35:30,687 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 151 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:30,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1054 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14052 states. [2023-11-19 07:35:31,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14052 to 14050. [2023-11-19 07:35:31,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14050 states, 14049 states have (on average 1.6893729091038507) internal successors, (23734), 14049 states have internal predecessors, (23734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14050 states to 14050 states and 23734 transitions. [2023-11-19 07:35:31,238 INFO L78 Accepts]: Start accepts. Automaton has 14050 states and 23734 transitions. Word has length 138 [2023-11-19 07:35:31,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:31,238 INFO L495 AbstractCegarLoop]: Abstraction has 14050 states and 23734 transitions. [2023-11-19 07:35:31,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14050 states and 23734 transitions. [2023-11-19 07:35:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:35:31,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:31,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:35:31,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:31,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 942917262, now seen corresponding path program 1 times [2023-11-19 07:35:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047136315] [2023-11-19 07:35:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:31,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:31,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:31,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047136315] [2023-11-19 07:35:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047136315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:31,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:31,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209252457] [2023-11-19 07:35:31,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:31,365 INFO L87 Difference]: Start difference. First operand 14050 states and 23734 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:31,794 INFO L93 Difference]: Finished difference Result 27936 states and 47208 transitions. [2023-11-19 07:35:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-11-19 07:35:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:31,849 INFO L225 Difference]: With dead ends: 27936 [2023-11-19 07:35:31,849 INFO L226 Difference]: Without dead ends: 20156 [2023-11-19 07:35:31,863 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 [2023-11-19 07:35:31,865 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 144 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:31,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1040 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20156 states. [2023-11-19 07:35:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20156 to 20154. [2023-11-19 07:35:32,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20154 states, 20153 states have (on average 1.6800476355877536) internal successors, (33858), 20153 states have internal predecessors, (33858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20154 states to 20154 states and 33858 transitions. [2023-11-19 07:35:32,567 INFO L78 Accepts]: Start accepts. Automaton has 20154 states and 33858 transitions. Word has length 138 [2023-11-19 07:35:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:32,567 INFO L495 AbstractCegarLoop]: Abstraction has 20154 states and 33858 transitions. [2023-11-19 07:35:32,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 20154 states and 33858 transitions. [2023-11-19 07:35:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:35:32,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:32,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:32,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:35:32,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:32,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -322452246, now seen corresponding path program 1 times [2023-11-19 07:35:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593146866] [2023-11-19 07:35:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:32,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593146866] [2023-11-19 07:35:32,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593146866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497166709] [2023-11-19 07:35:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:32,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:32,755 INFO L87 Difference]: Start difference. First operand 20154 states and 33858 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:33,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:33,557 INFO L93 Difference]: Finished difference Result 63910 states and 107601 transitions. [2023-11-19 07:35:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:33,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-11-19 07:35:33,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:33,803 INFO L225 Difference]: With dead ends: 63910 [2023-11-19 07:35:33,804 INFO L226 Difference]: Without dead ends: 44238 [2023-11-19 07:35:33,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:33,837 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 541 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:33,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1621 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:35:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44238 states. [2023-11-19 07:35:34,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44238 to 32116. [2023-11-19 07:35:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32116 states, 32115 states have (on average 1.6749182624941616) internal successors, (53790), 32115 states have internal predecessors, (53790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32116 states to 32116 states and 53790 transitions. [2023-11-19 07:35:35,232 INFO L78 Accepts]: Start accepts. Automaton has 32116 states and 53790 transitions. Word has length 138 [2023-11-19 07:35:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:35,232 INFO L495 AbstractCegarLoop]: Abstraction has 32116 states and 53790 transitions. [2023-11-19 07:35:35,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 32116 states and 53790 transitions. [2023-11-19 07:35:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:35:35,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:35,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:35,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:35:35,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:35,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:35,237 INFO L85 PathProgramCache]: Analyzing trace with hash 74120974, now seen corresponding path program 1 times [2023-11-19 07:35:35,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:35,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829521689] [2023-11-19 07:35:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:35,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:35,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829521689] [2023-11-19 07:35:35,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829521689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:35,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:35,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386544] [2023-11-19 07:35:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:35,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:35,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:35,352 INFO L87 Difference]: Start difference. First operand 32116 states and 53790 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:36,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:36,205 INFO L93 Difference]: Finished difference Result 71544 states and 119740 transitions. [2023-11-19 07:35:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:36,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-11-19 07:35:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:36,324 INFO L225 Difference]: With dead ends: 71544 [2023-11-19 07:35:36,324 INFO L226 Difference]: Without dead ends: 48902 [2023-11-19 07:35:36,355 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 [2023-11-19 07:35:36,356 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 158 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:36,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1090 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48902 states. [2023-11-19 07:35:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48902 to 48900. [2023-11-19 07:35:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48900 states, 48899 states have (on average 1.6619562772244831) internal successors, (81268), 48899 states have internal predecessors, (81268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48900 states to 48900 states and 81268 transitions. [2023-11-19 07:35:38,056 INFO L78 Accepts]: Start accepts. Automaton has 48900 states and 81268 transitions. Word has length 138 [2023-11-19 07:35:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:38,057 INFO L495 AbstractCegarLoop]: Abstraction has 48900 states and 81268 transitions. [2023-11-19 07:35:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 48900 states and 81268 transitions. [2023-11-19 07:35:38,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:35:38,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:38,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:38,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:35:38,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:38,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash -9867092, now seen corresponding path program 1 times [2023-11-19 07:35:38,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:38,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403162753] [2023-11-19 07:35:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:38,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403162753] [2023-11-19 07:35:38,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403162753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:38,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:38,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:38,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163325553] [2023-11-19 07:35:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:38,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:38,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:38,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:38,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:38,362 INFO L87 Difference]: Start difference. First operand 48900 states and 81268 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:39,917 INFO L93 Difference]: Finished difference Result 110025 states and 183600 transitions. [2023-11-19 07:35:39,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-11-19 07:35:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:40,112 INFO L225 Difference]: With dead ends: 110025 [2023-11-19 07:35:40,112 INFO L226 Difference]: Without dead ends: 74764 [2023-11-19 07:35:40,147 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 [2023-11-19 07:35:40,147 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 165 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:40,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:35:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74764 states. [2023-11-19 07:35:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74764 to 74762. [2023-11-19 07:35:42,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74762 states, 74761 states have (on average 1.6525193616992817) internal successors, (123544), 74761 states have internal predecessors, (123544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 123544 transitions. [2023-11-19 07:35:42,599 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 123544 transitions. Word has length 138 [2023-11-19 07:35:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:42,599 INFO L495 AbstractCegarLoop]: Abstraction has 74762 states and 123544 transitions. [2023-11-19 07:35:42,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 123544 transitions. [2023-11-19 07:35:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 07:35:42,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:42,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:35:42,605 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:42,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1439854402, now seen corresponding path program 1 times [2023-11-19 07:35:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:42,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686711553] [2023-11-19 07:35:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:43,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:43,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686711553] [2023-11-19 07:35:43,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686711553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:43,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:43,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:35:43,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20341724] [2023-11-19 07:35:43,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:43,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:43,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:43,105 INFO L87 Difference]: Start difference. First operand 74762 states and 123544 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:44,842 INFO L93 Difference]: Finished difference Result 149298 states and 246723 transitions. [2023-11-19 07:35:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:44,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2023-11-19 07:35:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:45,329 INFO L225 Difference]: With dead ends: 149298 [2023-11-19 07:35:45,329 INFO L226 Difference]: Without dead ends: 74764 [2023-11-19 07:35:45,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:35:45,419 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 297 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:45,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1898 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:45,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74764 states. [2023-11-19 07:35:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74764 to 74762. [2023-11-19 07:35:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74762 states, 74761 states have (on average 1.6441593879161596) internal successors, (122919), 74761 states have internal predecessors, (122919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74762 states to 74762 states and 122919 transitions. [2023-11-19 07:35:47,790 INFO L78 Accepts]: Start accepts. Automaton has 74762 states and 122919 transitions. Word has length 140 [2023-11-19 07:35:47,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:47,790 INFO L495 AbstractCegarLoop]: Abstraction has 74762 states and 122919 transitions. [2023-11-19 07:35:47,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 74762 states and 122919 transitions. [2023-11-19 07:35:47,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-19 07:35:47,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:47,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:35:47,794 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:47,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash -183199007, now seen corresponding path program 1 times [2023-11-19 07:35:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255749444] [2023-11-19 07:35:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:48,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:48,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255749444] [2023-11-19 07:35:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255749444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:48,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:48,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:35:48,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192783152] [2023-11-19 07:35:48,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:48,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:48,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:48,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:48,253 INFO L87 Difference]: Start difference. First operand 74762 states and 122919 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:50,898 INFO L93 Difference]: Finished difference Result 218656 states and 359935 transitions. [2023-11-19 07:35:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:50,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2023-11-19 07:35:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:51,098 INFO L225 Difference]: With dead ends: 218656 [2023-11-19 07:35:51,099 INFO L226 Difference]: Without dead ends: 144122 [2023-11-19 07:35:51,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:35:51,177 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 148 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:51,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 2376 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:35:51,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144122 states. [2023-11-19 07:35:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144122 to 144120. [2023-11-19 07:35:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144120 states, 144119 states have (on average 1.633122627828392) internal successors, (235364), 144119 states have internal predecessors, (235364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144120 states to 144120 states and 235364 transitions. [2023-11-19 07:35:55,236 INFO L78 Accepts]: Start accepts. Automaton has 144120 states and 235364 transitions. Word has length 143 [2023-11-19 07:35:55,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:35:55,237 INFO L495 AbstractCegarLoop]: Abstraction has 144120 states and 235364 transitions. [2023-11-19 07:35:55,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,237 INFO L276 IsEmpty]: Start isEmpty. Operand 144120 states and 235364 transitions. [2023-11-19 07:35:55,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-19 07:35:55,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:35:55,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:55,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:35:55,240 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:35:55,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:55,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1815547221, now seen corresponding path program 1 times [2023-11-19 07:35:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:55,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751255693] [2023-11-19 07:35:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:55,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:55,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:55,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751255693] [2023-11-19 07:35:55,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751255693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:55,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:55,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:35:55,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163274464] [2023-11-19 07:35:55,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:55,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:55,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:55,722 INFO L87 Difference]: Start difference. First operand 144120 states and 235364 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:35:59,177 INFO L93 Difference]: Finished difference Result 246002 states and 402890 transitions. [2023-11-19 07:35:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:59,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2023-11-19 07:35:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:35:59,825 INFO L225 Difference]: With dead ends: 246002 [2023-11-19 07:35:59,826 INFO L226 Difference]: Without dead ends: 246000 [2023-11-19 07:35:59,859 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 [2023-11-19 07:35:59,862 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 161 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:35:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 2212 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:36:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246000 states. [2023-11-19 07:36:04,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246000 to 149928. [2023-11-19 07:36:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149928 states, 149927 states have (on average 1.6084160958333056) internal successors, (241145), 149927 states have internal predecessors, (241145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149928 states to 149928 states and 241145 transitions. [2023-11-19 07:36:04,850 INFO L78 Accepts]: Start accepts. Automaton has 149928 states and 241145 transitions. Word has length 144 [2023-11-19 07:36:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:36:04,851 INFO L495 AbstractCegarLoop]: Abstraction has 149928 states and 241145 transitions. [2023-11-19 07:36:04,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 149928 states and 241145 transitions. [2023-11-19 07:36:04,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 07:36:04,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:36:04,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:36:04,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:36:04,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1370618721, now seen corresponding path program 1 times [2023-11-19 07:36:04,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:04,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758307948] [2023-11-19 07:36:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:36:05,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758307948] [2023-11-19 07:36:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758307948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:05,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:36:05,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368171651] [2023-11-19 07:36:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:05,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:05,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:05,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:05,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:05,107 INFO L87 Difference]: Start difference. First operand 149928 states and 241145 transitions. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)