./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/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_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/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 64bit --witnessprinter.graph.data.programhash c014373e6f19ec2d953a46fddee3dc12cdfbd6e3fd8b2254991c2ccaa9c12571 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:42:01,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:42:01,350 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:42:01,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:42:01,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:42:01,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:42:01,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:42:01,391 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:42:01,392 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:42:01,393 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:42:01,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:42:01,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:42:01,395 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:42:01,396 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:42:01,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:42:01,397 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:42:01,398 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:42:01,399 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:42:01,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:42:01,400 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:42:01,401 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:42:01,409 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:42:01,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:42:01,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:42:01,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:42:01,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:01,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:42:01,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:42:01,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:42:01,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:42:01,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:42:01,418 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:42:01,419 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:42:01,419 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:42:01,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:42:01,421 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:42:01,422 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_37691b45-8595-4fb5-83db-722baad8f372/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c014373e6f19ec2d953a46fddee3dc12cdfbd6e3fd8b2254991c2ccaa9c12571 [2023-11-19 07:42:01,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:01,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:01,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:01,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:01,838 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:01,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p1.c [2023-11-19 07:42:05,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:05,552 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:05,555 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p1.c [2023-11-19 07:42:05,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/data/aca27bb5f/cc814d4763c147ae9503de2a9b9312bb/FLAG451755199 [2023-11-19 07:42:05,597 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/data/aca27bb5f/cc814d4763c147ae9503de2a9b9312bb [2023-11-19 07:42:05,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:05,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:05,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:05,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:05,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:05,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:05" (1/1) ... [2023-11-19 07:42:05,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7d7870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:05, skipping insertion in model container [2023-11-19 07:42:05,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:05" (1/1) ... [2023-11-19 07:42:05,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:05,933 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_37691b45-8595-4fb5-83db-722baad8f372/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p1.c[1258,1271] [2023-11-19 07:42:06,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:06,526 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:06,539 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_37691b45-8595-4fb5-83db-722baad8f372/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p1.c[1258,1271] [2023-11-19 07:42:06,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:06,897 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:06,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06 WrapperNode [2023-11-19 07:42:06,897 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:06,899 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:06,899 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:06,899 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:06,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:07,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:07,572 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5769 [2023-11-19 07:42:07,573 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:07,574 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:07,574 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:07,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:07,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:07,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:07,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:07,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:08,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:08,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:08,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:08,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:08,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:08,334 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:08,334 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:08,334 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:08,335 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:08,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:08,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:08,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:08,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37691b45-8595-4fb5-83db-722baad8f372/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:08,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:42:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:42:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:09,182 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:09,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:13,540 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:13,569 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:13,570 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:42:13,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:13 BoogieIcfgContainer [2023-11-19 07:42:13,586 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:13,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:13,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:13,594 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:13,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:05" (1/3) ... [2023-11-19 07:42:13,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7946db25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:13, skipping insertion in model container [2023-11-19 07:42:13,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (2/3) ... [2023-11-19 07:42:13,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7946db25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:13, skipping insertion in model container [2023-11-19 07:42:13,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:13" (3/3) ... [2023-11-19 07:42:13,601 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bpbs_p1.c [2023-11-19 07:42:13,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:13,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:42:13,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:13,748 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;@3931c7dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:13,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:42:13,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 938 states, 936 states have (on average 1.6645299145299146) internal successors, (1558), 937 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states 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 07:42:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-19 07:42:13,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:13,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:13,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:13,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1404853904, now seen corresponding path program 1 times [2023-11-19 07:42:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:13,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431863667] [2023-11-19 07:42:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:13,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:16,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:22,725 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 07:42:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:22,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431863667] [2023-11-19 07:42:22,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431863667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:42:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273420810] [2023-11-19 07:42:22,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:22,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:22,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:22,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:22,787 INFO L87 Difference]: Start difference. First operand has 938 states, 936 states have (on average 1.6645299145299146) internal successors, (1558), 937 states have internal predecessors, (1558), 0 states have call successors, (0), 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 8 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 07:42:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:23,847 INFO L93 Difference]: Finished difference Result 3536 states and 5887 transitions. [2023-11-19 07:42:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:23,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 0 states have call successors, (0), 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 271 [2023-11-19 07:42:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:23,885 INFO L225 Difference]: With dead ends: 3536 [2023-11-19 07:42:23,885 INFO L226 Difference]: Without dead ends: 2699 [2023-11-19 07:42:23,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:42:23,900 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 8467 mSDsluCounter, 7392 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8467 SdHoareTripleChecker+Valid, 8919 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:23,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8467 Valid, 8919 Invalid, 392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:42:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2023-11-19 07:42:24,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 1036. [2023-11-19 07:42:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1035 states have (on average 1.6608695652173913) internal successors, (1719), 1035 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states 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 07:42:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1719 transitions. [2023-11-19 07:42:24,025 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1719 transitions. Word has length 271 [2023-11-19 07:42:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:24,028 INFO L495 AbstractCegarLoop]: Abstraction has 1036 states and 1719 transitions. [2023-11-19 07:42:24,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.875) internal successors, (271), 8 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 07:42:24,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1719 transitions. [2023-11-19 07:42:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-11-19 07:42:24,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:24,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:24,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:24,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:24,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash -759113374, now seen corresponding path program 1 times [2023-11-19 07:42:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:24,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559680491] [2023-11-19 07:42:24,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:29,621 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 07:42:29,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:29,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559680491] [2023-11-19 07:42:29,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559680491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:29,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:29,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:42:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959966226] [2023-11-19 07:42:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:29,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:29,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:29,630 INFO L87 Difference]: Start difference. First operand 1036 states and 1719 transitions. Second operand has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 07:42:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:30,550 INFO L93 Difference]: Finished difference Result 3770 states and 6256 transitions. [2023-11-19 07:42:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 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 272 [2023-11-19 07:42:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:30,571 INFO L225 Difference]: With dead ends: 3770 [2023-11-19 07:42:30,571 INFO L226 Difference]: Without dead ends: 2923 [2023-11-19 07:42:30,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:42:30,581 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 8532 mSDsluCounter, 7329 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8532 SdHoareTripleChecker+Valid, 8835 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:30,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8532 Valid, 8835 Invalid, 376 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:42:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2023-11-19 07:42:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 1228. [2023-11-19 07:42:30,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 1.6568867155664222) internal successors, (2033), 1227 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states 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 07:42:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 2033 transitions. [2023-11-19 07:42:30,641 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 2033 transitions. Word has length 272 [2023-11-19 07:42:30,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:30,645 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 2033 transitions. [2023-11-19 07:42:30,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.0) internal successors, (272), 8 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 07:42:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 2033 transitions. [2023-11-19 07:42:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-19 07:42:30,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:30,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:42:30,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:30,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1938471502, now seen corresponding path program 1 times [2023-11-19 07:42:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:30,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071320233] [2023-11-19 07:42:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:30,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:35,799 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 07:42:35,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:35,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071320233] [2023-11-19 07:42:35,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071320233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:35,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:35,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:42:35,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036448989] [2023-11-19 07:42:35,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:35,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:42:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:35,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:42:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:42:35,805 INFO L87 Difference]: Start difference. First operand 1228 states and 2033 transitions. Second operand has 8 states, 8 states have (on average 34.125) internal successors, (273), 8 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 07:42:36,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:36,737 INFO L93 Difference]: Finished difference Result 4118 states and 6824 transitions. [2023-11-19 07:42:36,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:42:36,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.125) internal successors, (273), 8 states have internal predecessors, (273), 0 states have call successors, (0), 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 273 [2023-11-19 07:42:36,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:36,758 INFO L225 Difference]: With dead ends: 4118 [2023-11-19 07:42:36,758 INFO L226 Difference]: Without dead ends: 3277 [2023-11-19 07:42:36,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:42:36,769 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 11302 mSDsluCounter, 7535 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11302 SdHoareTripleChecker+Valid, 9049 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:36,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11302 Valid, 9049 Invalid, 394 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:42:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2023-11-19 07:42:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 1594. [2023-11-19 07:42:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.6516007532956685) internal successors, (2631), 1593 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states 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 07:42:36,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2631 transitions. [2023-11-19 07:42:36,831 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2631 transitions. Word has length 273 [2023-11-19 07:42:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:36,832 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2631 transitions. [2023-11-19 07:42:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.125) internal successors, (273), 8 states have internal predecessors, (273), 0 states have call successors, (0), 0 states 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 07:42:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2631 transitions. [2023-11-19 07:42:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-19 07:42:36,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:36,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:36,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:42:36,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:36,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash -679120978, now seen corresponding path program 1 times [2023-11-19 07:42:36,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:36,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577012490] [2023-11-19 07:42:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:36,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:41,346 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 07:42:41,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:41,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577012490] [2023-11-19 07:42:41,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577012490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:41,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:41,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:42:41,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984346637] [2023-11-19 07:42:41,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:41,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:42:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:41,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:42:41,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:42:41,351 INFO L87 Difference]: Start difference. First operand 1594 states and 2631 transitions. Second operand has 9 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:42,465 INFO L93 Difference]: Finished difference Result 5849 states and 9677 transitions. [2023-11-19 07:42:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-19 07:42:42,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2023-11-19 07:42:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:42,494 INFO L225 Difference]: With dead ends: 5849 [2023-11-19 07:42:42,494 INFO L226 Difference]: Without dead ends: 5011 [2023-11-19 07:42:42,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:42:42,506 INFO L413 NwaCegarLoop]: 2947 mSDtfsCounter, 9675 mSDsluCounter, 17805 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9675 SdHoareTripleChecker+Valid, 20752 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:42,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9675 Valid, 20752 Invalid, 210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:42:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5011 states. [2023-11-19 07:42:42,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5011 to 1620. [2023-11-19 07:42:42,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1619 states have (on average 1.647313156269302) internal successors, (2667), 1619 states have internal predecessors, (2667), 0 states have call successors, (0), 0 states 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 07:42:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2667 transitions. [2023-11-19 07:42:42,595 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2667 transitions. Word has length 274 [2023-11-19 07:42:42,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:42,596 INFO L495 AbstractCegarLoop]: Abstraction has 1620 states and 2667 transitions. [2023-11-19 07:42:42,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 30.444444444444443) internal successors, (274), 9 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:42:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2667 transitions. [2023-11-19 07:42:42,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-11-19 07:42:42,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:42,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:42:42,604 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:42,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1450332086, now seen corresponding path program 1 times [2023-11-19 07:42:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988807205] [2023-11-19 07:42:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:42,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms