./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.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_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/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_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/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_02469c93-8d77-4001-a7e5-f50328f86232/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 c3ae342bfdc7bf76083bf4321cb5b6b26fe707bda9cd6edf475282aebbd1033a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:39,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:39,876 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:41:39,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:39,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:39,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:39,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:39,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:39,926 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:39,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:39,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:39,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:39,934 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:39,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:39,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:39,936 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:41:39,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:39,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:41:39,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:39,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:39,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:39,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:39,939 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:41:39,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:39,940 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:39,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:39,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:39,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:39,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:39,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:39,958 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:39,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:39,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:39,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:39,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:39,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:39,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:39,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:39,961 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:39,961 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_02469c93-8d77-4001-a7e5-f50328f86232/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ae342bfdc7bf76083bf4321cb5b6b26fe707bda9cd6edf475282aebbd1033a [2023-11-19 07:41:40,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:41:40,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:41:40,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:41:40,331 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:41:40,331 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:41:40,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2023-11-19 07:41:43,533 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:41:43,830 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:41:43,832 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2023-11-19 07:41:43,847 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/data/6da4ba65e/64266390992c405d8ce0f5889032409d/FLAGf1e3af918 [2023-11-19 07:41:43,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/data/6da4ba65e/64266390992c405d8ce0f5889032409d [2023-11-19 07:41:43,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:41:43,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:41:43,878 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:43,878 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:41:43,884 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:41:43,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:43" (1/1) ... [2023-11-19 07:41:43,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f43ac34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:43, skipping insertion in model container [2023-11-19 07:41:43,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:43" (1/1) ... [2023-11-19 07:41:43,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:41:44,203 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_02469c93-8d77-4001-a7e5-f50328f86232/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2023-11-19 07:41:44,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:44,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:41:44,325 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_02469c93-8d77-4001-a7e5-f50328f86232/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2023-11-19 07:41:44,326 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:41:44,350 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:41:44,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44 WrapperNode [2023-11-19 07:41:44,352 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:41:44,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:44,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:41:44,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:41:44,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,431 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2023-11-19 07:41:44,432 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:41:44,433 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:41:44,433 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:41:44,433 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:41:44,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:41:44,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:41:44,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:41:44,489 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:41:44,490 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (1/1) ... [2023-11-19 07:41:44,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:44,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:44,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:41:44,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02469c93-8d77-4001-a7e5-f50328f86232/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:41:44,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:41:44,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:41:44,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:41:44,753 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:41:44,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:41:45,467 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:41:45,477 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:41:45,477 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:41:45,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:45 BoogieIcfgContainer [2023-11-19 07:41:45,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:41:45,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:41:45,486 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:41:45,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:41:45,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:43" (1/3) ... [2023-11-19 07:41:45,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e0e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:45, skipping insertion in model container [2023-11-19 07:41:45,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:44" (2/3) ... [2023-11-19 07:41:45,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6e0e88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:41:45, skipping insertion in model container [2023-11-19 07:41:45,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:41:45" (3/3) ... [2023-11-19 07:41:45,493 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2023-11-19 07:41:45,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:41:45,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:41:45,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:41:45,596 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;@78372a78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:41:45,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:41:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 118 states have internal predecessors, (209), 0 states have call successors, (0), 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 07:41:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:41:45,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:45,638 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] [2023-11-19 07:41:45,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:45,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:45,644 INFO L85 PathProgramCache]: Analyzing trace with hash 901132838, now seen corresponding path program 1 times [2023-11-19 07:41:45,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:45,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917024446] [2023-11-19 07:41:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:45,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,001 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 07:41:46,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:46,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917024446] [2023-11-19 07:41:46,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917024446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:46,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:46,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082153521] [2023-11-19 07:41:46,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:46,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:41:46,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:46,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:41:46,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:41:46,052 INFO L87 Difference]: Start difference. First operand has 119 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 118 states have internal predecessors, (209), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 07:41:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:46,107 INFO L93 Difference]: Finished difference Result 182 states and 316 transitions. [2023-11-19 07:41:46,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:41:46,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-19 07:41:46,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:46,123 INFO L225 Difference]: With dead ends: 182 [2023-11-19 07:41:46,124 INFO L226 Difference]: Without dead ends: 115 [2023-11-19 07:41:46,127 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 07:41:46,134 INFO L413 NwaCegarLoop]: 206 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, 206 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 07:41:46,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-19 07:41:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-19 07:41:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.7719298245614035) internal successors, (202), 114 states have internal predecessors, (202), 0 states have call successors, (0), 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 07:41:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 202 transitions. [2023-11-19 07:41:46,211 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 202 transitions. Word has length 37 [2023-11-19 07:41:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:46,213 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 202 transitions. [2023-11-19 07:41:46,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 07:41:46,214 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 202 transitions. [2023-11-19 07:41:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:41:46,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:46,219 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] [2023-11-19 07:41:46,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:41:46,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:46,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 83484388, now seen corresponding path program 1 times [2023-11-19 07:41:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:46,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152306521] [2023-11-19 07:41:46,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,527 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 07:41:46,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152306521] [2023-11-19 07:41:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152306521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:46,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:46,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549052098] [2023-11-19 07:41:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:46,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:46,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:46,531 INFO L87 Difference]: Start difference. First operand 115 states and 202 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 07:41:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:46,639 INFO L93 Difference]: Finished difference Result 235 states and 406 transitions. [2023-11-19 07:41:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:46,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-19 07:41:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:46,642 INFO L225 Difference]: With dead ends: 235 [2023-11-19 07:41:46,642 INFO L226 Difference]: Without dead ends: 173 [2023-11-19 07:41:46,643 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 07:41:46,645 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 101 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:46,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 759 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-19 07:41:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2023-11-19 07:41:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 114 states have internal predecessors, (175), 0 states have call successors, (0), 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 07:41:46,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 175 transitions. [2023-11-19 07:41:46,658 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 175 transitions. Word has length 37 [2023-11-19 07:41:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:46,659 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 175 transitions. [2023-11-19 07:41:46,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 07:41:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 175 transitions. [2023-11-19 07:41:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 07:41:46,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:46,662 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] [2023-11-19 07:41:46,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:41:46,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:46,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash -105296595, now seen corresponding path program 1 times [2023-11-19 07:41:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236472366] [2023-11-19 07:41:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:46,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:46,836 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 07:41:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236472366] [2023-11-19 07:41:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236472366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:46,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:46,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666397116] [2023-11-19 07:41:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:46,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:46,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:46,840 INFO L87 Difference]: Start difference. First operand 115 states and 175 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 07:41:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:46,883 INFO L93 Difference]: Finished difference Result 222 states and 358 transitions. [2023-11-19 07:41:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-19 07:41:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:46,886 INFO L225 Difference]: With dead ends: 222 [2023-11-19 07:41:46,886 INFO L226 Difference]: Without dead ends: 164 [2023-11-19 07:41:46,887 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 07:41:46,888 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 75 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:46,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 373 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-19 07:41:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2023-11-19 07:41:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.565217391304348) internal successors, (252), 161 states have internal predecessors, (252), 0 states have call successors, (0), 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 07:41:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 252 transitions. [2023-11-19 07:41:46,915 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 252 transitions. Word has length 63 [2023-11-19 07:41:46,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:46,917 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 252 transitions. [2023-11-19 07:41:46,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 07:41:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 252 transitions. [2023-11-19 07:41:46,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:41:46,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:46,926 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] [2023-11-19 07:41:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:41:46,926 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:46,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2025700882, now seen corresponding path program 1 times [2023-11-19 07:41:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:46,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50765026] [2023-11-19 07:41:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:46,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,080 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 07:41:47,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:47,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50765026] [2023-11-19 07:41:47,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50765026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:47,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:47,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:47,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423188150] [2023-11-19 07:41:47,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:47,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:47,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:47,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:47,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:47,085 INFO L87 Difference]: Start difference. First operand 162 states and 252 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:41:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:47,111 INFO L93 Difference]: Finished difference Result 269 states and 435 transitions. [2023-11-19 07:41:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:47,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-19 07:41:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:47,117 INFO L225 Difference]: With dead ends: 269 [2023-11-19 07:41:47,118 INFO L226 Difference]: Without dead ends: 211 [2023-11-19 07:41:47,119 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 07:41:47,130 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 84 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 399 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 07:41:47,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 399 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:47,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-19 07:41:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-19 07:41:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 208 states have internal predecessors, (332), 0 states have call successors, (0), 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 07:41:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 332 transitions. [2023-11-19 07:41:47,150 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 332 transitions. Word has length 65 [2023-11-19 07:41:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:47,151 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 332 transitions. [2023-11-19 07:41:47,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:41:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 332 transitions. [2023-11-19 07:41:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:41:47,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:47,160 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] [2023-11-19 07:41:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:41:47,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:47,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 34844053, now seen corresponding path program 1 times [2023-11-19 07:41:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:47,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669084279] [2023-11-19 07:41:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,324 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 07:41:47,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:47,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669084279] [2023-11-19 07:41:47,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669084279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:47,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:47,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277928487] [2023-11-19 07:41:47,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:47,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:47,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:47,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:47,330 INFO L87 Difference]: Start difference. First operand 209 states and 332 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:41:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:47,358 INFO L93 Difference]: Finished difference Result 488 states and 803 transitions. [2023-11-19 07:41:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-19 07:41:47,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:47,362 INFO L225 Difference]: With dead ends: 488 [2023-11-19 07:41:47,363 INFO L226 Difference]: Without dead ends: 338 [2023-11-19 07:41:47,366 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 07:41:47,372 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 77 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:47,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 386 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-19 07:41:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2023-11-19 07:41:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.6238805970149253) internal successors, (544), 335 states have internal predecessors, (544), 0 states have call successors, (0), 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 07:41:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 544 transitions. [2023-11-19 07:41:47,402 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 544 transitions. Word has length 65 [2023-11-19 07:41:47,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:47,404 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 544 transitions. [2023-11-19 07:41:47,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 07:41:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 544 transitions. [2023-11-19 07:41:47,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:41:47,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:47,409 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] [2023-11-19 07:41:47,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:41:47,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:47,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:47,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1167801350, now seen corresponding path program 1 times [2023-11-19 07:41:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199739606] [2023-11-19 07:41:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,530 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 07:41:47,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:47,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199739606] [2023-11-19 07:41:47,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199739606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:47,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:47,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:47,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594566692] [2023-11-19 07:41:47,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:47,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:47,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:47,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:47,565 INFO L87 Difference]: Start difference. First operand 336 states and 544 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:47,596 INFO L93 Difference]: Finished difference Result 609 states and 1003 transitions. [2023-11-19 07:41:47,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 07:41:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:47,600 INFO L225 Difference]: With dead ends: 609 [2023-11-19 07:41:47,601 INFO L226 Difference]: Without dead ends: 459 [2023-11-19 07:41:47,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:47,603 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 78 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 391 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 07:41:47,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 391 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:47,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-19 07:41:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2023-11-19 07:41:47,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.6293859649122806) internal successors, (743), 456 states have internal predecessors, (743), 0 states have call successors, (0), 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 07:41:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 743 transitions. [2023-11-19 07:41:47,633 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 743 transitions. Word has length 67 [2023-11-19 07:41:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:47,634 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 743 transitions. [2023-11-19 07:41:47,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 743 transitions. [2023-11-19 07:41:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:41:47,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:47,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:47,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:41:47,641 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:47,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash -171119363, now seen corresponding path program 1 times [2023-11-19 07:41:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100544701] [2023-11-19 07:41:47,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,804 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 07:41:47,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:47,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100544701] [2023-11-19 07:41:47,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100544701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:47,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:47,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:47,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149762873] [2023-11-19 07:41:47,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:47,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:47,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:47,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:47,808 INFO L87 Difference]: Start difference. First operand 457 states and 743 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:47,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:47,845 INFO L93 Difference]: Finished difference Result 1178 states and 1942 transitions. [2023-11-19 07:41:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:47,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 07:41:47,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:47,851 INFO L225 Difference]: With dead ends: 1178 [2023-11-19 07:41:47,852 INFO L226 Difference]: Without dead ends: 786 [2023-11-19 07:41:47,853 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 07:41:47,854 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 71 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:47,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 379 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-11-19 07:41:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2023-11-19 07:41:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.6270753512132823) internal successors, (1274), 783 states have internal predecessors, (1274), 0 states have call successors, (0), 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 07:41:47,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1274 transitions. [2023-11-19 07:41:47,892 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1274 transitions. Word has length 67 [2023-11-19 07:41:47,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:47,894 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1274 transitions. [2023-11-19 07:41:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1274 transitions. [2023-11-19 07:41:47,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:41:47,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:47,895 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] [2023-11-19 07:41:47,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:41:47,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:47,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:47,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1554688226, now seen corresponding path program 1 times [2023-11-19 07:41:47,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:47,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237061280] [2023-11-19 07:41:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:47,985 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 07:41:47,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:47,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237061280] [2023-11-19 07:41:47,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237061280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:47,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:47,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:47,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695875446] [2023-11-19 07:41:47,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:47,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:47,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:47,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:47,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:47,988 INFO L87 Difference]: Start difference. First operand 784 states and 1274 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:48,038 INFO L93 Difference]: Finished difference Result 1475 states and 2419 transitions. [2023-11-19 07:41:48,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:48,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-19 07:41:48,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:48,045 INFO L225 Difference]: With dead ends: 1475 [2023-11-19 07:41:48,046 INFO L226 Difference]: Without dead ends: 1083 [2023-11-19 07:41:48,047 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 07:41:48,048 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 72 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 383 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 07:41:48,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 383 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2023-11-19 07:41:48,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1081. [2023-11-19 07:41:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 1.6203703703703705) internal successors, (1750), 1080 states have internal predecessors, (1750), 0 states have call successors, (0), 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 07:41:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1750 transitions. [2023-11-19 07:41:48,094 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1750 transitions. Word has length 69 [2023-11-19 07:41:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:48,094 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1750 transitions. [2023-11-19 07:41:48,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1750 transitions. [2023-11-19 07:41:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:41:48,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:48,096 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] [2023-11-19 07:41:48,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:41:48,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:48,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:48,097 INFO L85 PathProgramCache]: Analyzing trace with hash 859687781, now seen corresponding path program 1 times [2023-11-19 07:41:48,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:48,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074279176] [2023-11-19 07:41:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:48,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:48,296 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 07:41:48,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:48,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074279176] [2023-11-19 07:41:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074279176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:48,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:48,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:48,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079102634] [2023-11-19 07:41:48,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:48,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:48,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:48,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:48,300 INFO L87 Difference]: Start difference. First operand 1081 states and 1750 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:48,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:48,547 INFO L93 Difference]: Finished difference Result 5482 states and 9073 transitions. [2023-11-19 07:41:48,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-19 07:41:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:48,575 INFO L225 Difference]: With dead ends: 5482 [2023-11-19 07:41:48,575 INFO L226 Difference]: Without dead ends: 4472 [2023-11-19 07:41:48,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:41:48,579 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 584 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:48,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1086 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:48,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2023-11-19 07:41:48,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2024. [2023-11-19 07:41:48,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 1.6173999011369253) internal successors, (3272), 2023 states have internal predecessors, (3272), 0 states have call successors, (0), 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 07:41:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3272 transitions. [2023-11-19 07:41:48,699 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3272 transitions. Word has length 69 [2023-11-19 07:41:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:48,700 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 3272 transitions. [2023-11-19 07:41:48,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3272 transitions. [2023-11-19 07:41:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 07:41:48,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:48,702 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] [2023-11-19 07:41:48,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:41:48,702 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:48,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:48,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1042315252, now seen corresponding path program 1 times [2023-11-19 07:41:48,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:48,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632969915] [2023-11-19 07:41:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:48,826 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 07:41:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:48,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632969915] [2023-11-19 07:41:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632969915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:48,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:48,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117690539] [2023-11-19 07:41:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:48,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:48,829 INFO L87 Difference]: Start difference. First operand 2024 states and 3272 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:41:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:49,023 INFO L93 Difference]: Finished difference Result 6607 states and 10831 transitions. [2023-11-19 07:41:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-11-19 07:41:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:49,052 INFO L225 Difference]: With dead ends: 6607 [2023-11-19 07:41:49,052 INFO L226 Difference]: Without dead ends: 4654 [2023-11-19 07:41:49,056 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 07:41:49,057 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 284 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:49,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 495 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:49,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2023-11-19 07:41:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 3320. [2023-11-19 07:41:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.619764989454655) internal successors, (5376), 3319 states have internal predecessors, (5376), 0 states have call successors, (0), 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 07:41:49,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 5376 transitions. [2023-11-19 07:41:49,221 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 5376 transitions. Word has length 70 [2023-11-19 07:41:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:49,221 INFO L495 AbstractCegarLoop]: Abstraction has 3320 states and 5376 transitions. [2023-11-19 07:41:49,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 07:41:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 5376 transitions. [2023-11-19 07:41:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 07:41:49,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:49,223 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] [2023-11-19 07:41:49,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:41:49,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:49,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 294137212, now seen corresponding path program 1 times [2023-11-19 07:41:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:49,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920104683] [2023-11-19 07:41:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:49,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:49,341 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 07:41:49,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:49,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920104683] [2023-11-19 07:41:49,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920104683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:49,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:49,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:49,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792604703] [2023-11-19 07:41:49,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:49,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:49,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:49,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:49,345 INFO L87 Difference]: Start difference. First operand 3320 states and 5376 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:49,637 INFO L93 Difference]: Finished difference Result 10675 states and 17375 transitions. [2023-11-19 07:41:49,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:49,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-11-19 07:41:49,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:49,682 INFO L225 Difference]: With dead ends: 10675 [2023-11-19 07:41:49,683 INFO L226 Difference]: Without dead ends: 7426 [2023-11-19 07:41:49,688 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 07:41:49,689 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 282 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 551 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 07:41:49,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 551 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2023-11-19 07:41:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 5344. [2023-11-19 07:41:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.609208309938237) internal successors, (8598), 5343 states have internal predecessors, (8598), 0 states have call successors, (0), 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 07:41:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 8598 transitions. [2023-11-19 07:41:50,020 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 8598 transitions. Word has length 71 [2023-11-19 07:41:50,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:50,020 INFO L495 AbstractCegarLoop]: Abstraction has 5344 states and 8598 transitions. [2023-11-19 07:41:50,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:50,021 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 8598 transitions. [2023-11-19 07:41:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-19 07:41:50,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:50,022 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] [2023-11-19 07:41:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:41:50,022 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:50,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1056505021, now seen corresponding path program 1 times [2023-11-19 07:41:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261854608] [2023-11-19 07:41:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:50,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261854608] [2023-11-19 07:41:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261854608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:50,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:50,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:41:50,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672822568] [2023-11-19 07:41:50,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:50,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:41:50,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:41:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:41:50,157 INFO L87 Difference]: Start difference. First operand 5344 states and 8598 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 07:41:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:50,569 INFO L93 Difference]: Finished difference Result 16871 states and 27255 transitions. [2023-11-19 07:41:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:41:50,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-11-19 07:41:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:50,618 INFO L225 Difference]: With dead ends: 16871 [2023-11-19 07:41:50,618 INFO L226 Difference]: Without dead ends: 11598 [2023-11-19 07:41:50,624 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 07:41:50,625 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 280 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 553 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 07:41:50,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 553 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:50,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11598 states. [2023-11-19 07:41:51,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11598 to 8428. [2023-11-19 07:41:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 1.5981962738815711) internal successors, (13468), 8427 states have internal predecessors, (13468), 0 states have call successors, (0), 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 07:41:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 13468 transitions. [2023-11-19 07:41:51,078 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 13468 transitions. Word has length 72 [2023-11-19 07:41:51,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:51,079 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 13468 transitions. [2023-11-19 07:41:51,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 07:41:51,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 13468 transitions. [2023-11-19 07:41:51,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 07:41:51,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:51,080 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] [2023-11-19 07:41:51,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:41:51,081 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:51,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 478401083, now seen corresponding path program 1 times [2023-11-19 07:41:51,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:51,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263744523] [2023-11-19 07:41:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:51,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:51,355 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 07:41:51,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:51,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263744523] [2023-11-19 07:41:51,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263744523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:51,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:51,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:51,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609671649] [2023-11-19 07:41:51,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:51,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:51,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:51,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:51,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:51,358 INFO L87 Difference]: Start difference. First operand 8428 states and 13468 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:51,723 INFO L93 Difference]: Finished difference Result 16787 states and 26844 transitions. [2023-11-19 07:41:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-19 07:41:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:51,743 INFO L225 Difference]: With dead ends: 16787 [2023-11-19 07:41:51,744 INFO L226 Difference]: Without dead ends: 8430 [2023-11-19 07:41:51,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:51,755 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 141 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:51,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 459 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2023-11-19 07:41:52,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 8428. [2023-11-19 07:41:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 1.5833629998813339) internal successors, (13343), 8427 states have internal predecessors, (13343), 0 states have call successors, (0), 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 07:41:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 13343 transitions. [2023-11-19 07:41:52,197 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 13343 transitions. Word has length 74 [2023-11-19 07:41:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:52,198 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 13343 transitions. [2023-11-19 07:41:52,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 13343 transitions. [2023-11-19 07:41:52,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 07:41:52,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:52,200 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 07:41:52,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:41:52,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:52,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1246891745, now seen corresponding path program 1 times [2023-11-19 07:41:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:52,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882299437] [2023-11-19 07:41:52,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:52,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:52,582 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 07:41:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882299437] [2023-11-19 07:41:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882299437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685982439] [2023-11-19 07:41:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:52,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:52,584 INFO L87 Difference]: Start difference. First operand 8428 states and 13343 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 07:41:53,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:53,012 INFO L93 Difference]: Finished difference Result 24145 states and 38378 transitions. [2023-11-19 07:41:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:41:53,013 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 07:41:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:53,051 INFO L225 Difference]: With dead ends: 24145 [2023-11-19 07:41:53,051 INFO L226 Difference]: Without dead ends: 15788 [2023-11-19 07:41:53,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:41:53,065 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 205 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:53,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 466 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:53,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15788 states. [2023-11-19 07:41:53,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15788 to 15786. [2023-11-19 07:41:53,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15786 states, 15785 states have (on average 1.5671840354767184) internal successors, (24738), 15785 states have internal predecessors, (24738), 0 states have call successors, (0), 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 07:41:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15786 states to 15786 states and 24738 transitions. [2023-11-19 07:41:53,763 INFO L78 Accepts]: Start accepts. Automaton has 15786 states and 24738 transitions. Word has length 77 [2023-11-19 07:41:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:53,764 INFO L495 AbstractCegarLoop]: Abstraction has 15786 states and 24738 transitions. [2023-11-19 07:41:53,764 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 07:41:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 15786 states and 24738 transitions. [2023-11-19 07:41:53,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:41:53,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:53,765 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] [2023-11-19 07:41:53,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:41:53,766 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:53,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:53,766 INFO L85 PathProgramCache]: Analyzing trace with hash -427514140, now seen corresponding path program 1 times [2023-11-19 07:41:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060780983] [2023-11-19 07:41:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:54,087 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 07:41:54,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:54,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060780983] [2023-11-19 07:41:54,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060780983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:54,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:54,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:41:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673496983] [2023-11-19 07:41:54,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:54,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:41:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:41:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:41:54,090 INFO L87 Difference]: Start difference. First operand 15786 states and 24738 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:54,872 INFO L93 Difference]: Finished difference Result 25439 states and 39739 transitions. [2023-11-19 07:41:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:54,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-19 07:41:54,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:54,936 INFO L225 Difference]: With dead ends: 25439 [2023-11-19 07:41:54,936 INFO L226 Difference]: Without dead ends: 25437 [2023-11-19 07:41:54,947 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 07:41:54,948 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 74 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:54,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 758 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25437 states. [2023-11-19 07:41:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25437 to 16872. [2023-11-19 07:41:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16872 states, 16871 states have (on average 1.5301404777428724) internal successors, (25815), 16871 states have internal predecessors, (25815), 0 states have call successors, (0), 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 07:41:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 25815 transitions. [2023-11-19 07:41:55,745 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 25815 transitions. Word has length 78 [2023-11-19 07:41:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:55,745 INFO L495 AbstractCegarLoop]: Abstraction has 16872 states and 25815 transitions. [2023-11-19 07:41:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 25815 transitions. [2023-11-19 07:41:55,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:41:55,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:55,749 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:41:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:41:55,750 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:55,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:55,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1568556927, now seen corresponding path program 1 times [2023-11-19 07:41:55,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:55,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380956608] [2023-11-19 07:41:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:55,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:55,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380956608] [2023-11-19 07:41:55,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380956608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:55,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:55,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949981804] [2023-11-19 07:41:55,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:55,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:55,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:55,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:55,860 INFO L87 Difference]: Start difference. First operand 16872 states and 25815 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 07:41:56,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:56,626 INFO L93 Difference]: Finished difference Result 50355 states and 76975 transitions. [2023-11-19 07:41:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:56,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-11-19 07:41:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:56,707 INFO L225 Difference]: With dead ends: 50355 [2023-11-19 07:41:56,707 INFO L226 Difference]: Without dead ends: 33550 [2023-11-19 07:41:56,728 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 07:41:56,728 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 111 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:56,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33550 states. [2023-11-19 07:41:57,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33550 to 33548. [2023-11-19 07:41:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33548 states, 33547 states have (on average 1.5150982204071899) internal successors, (50827), 33547 states have internal predecessors, (50827), 0 states have call successors, (0), 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 07:41:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33548 states to 33548 states and 50827 transitions. [2023-11-19 07:41:57,985 INFO L78 Accepts]: Start accepts. Automaton has 33548 states and 50827 transitions. Word has length 103 [2023-11-19 07:41:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:57,986 INFO L495 AbstractCegarLoop]: Abstraction has 33548 states and 50827 transitions. [2023-11-19 07:41:57,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 07:41:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 33548 states and 50827 transitions. [2023-11-19 07:41:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:41:57,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:57,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:57,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:41:57,993 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:57,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1611929700, now seen corresponding path program 1 times [2023-11-19 07:41:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:57,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434247298] [2023-11-19 07:41:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:57,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:41:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434247298] [2023-11-19 07:41:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434247298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306790267] [2023-11-19 07:41:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:58,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:58,124 INFO L87 Difference]: Start difference. First operand 33548 states and 50827 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 07:41:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:59,565 INFO L93 Difference]: Finished difference Result 100168 states and 151615 transitions. [2023-11-19 07:41:59,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:59,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 103 [2023-11-19 07:41:59,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:59,870 INFO L225 Difference]: With dead ends: 100168 [2023-11-19 07:41:59,870 INFO L226 Difference]: Without dead ends: 66721 [2023-11-19 07:41:59,901 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 07:41:59,902 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 96 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:59,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 386 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66721 states. [2023-11-19 07:42:02,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66721 to 66719. [2023-11-19 07:42:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66719 states, 66718 states have (on average 1.49991006924668) internal successors, (100071), 66718 states have internal predecessors, (100071), 0 states have call successors, (0), 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 07:42:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66719 states to 66719 states and 100071 transitions. [2023-11-19 07:42:02,308 INFO L78 Accepts]: Start accepts. Automaton has 66719 states and 100071 transitions. Word has length 103 [2023-11-19 07:42:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:02,309 INFO L495 AbstractCegarLoop]: Abstraction has 66719 states and 100071 transitions. [2023-11-19 07:42:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 07:42:02,309 INFO L276 IsEmpty]: Start isEmpty. Operand 66719 states and 100071 transitions. [2023-11-19 07:42:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:42:02,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:02,322 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:42:02,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:42:02,323 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:02,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:02,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1885516983, now seen corresponding path program 1 times [2023-11-19 07:42:02,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:02,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122388249] [2023-11-19 07:42:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:02,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 07:42:02,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:02,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122388249] [2023-11-19 07:42:02,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122388249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:02,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227639862] [2023-11-19 07:42:02,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:02,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:02,447 INFO L87 Difference]: Start difference. First operand 66719 states and 100071 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 07:42:05,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:05,232 INFO L93 Difference]: Finished difference Result 199271 states and 298596 transitions. [2023-11-19 07:42:05,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:05,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 103 [2023-11-19 07:42:05,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:05,495 INFO L225 Difference]: With dead ends: 199271 [2023-11-19 07:42:05,495 INFO L226 Difference]: Without dead ends: 132729 [2023-11-19 07:42:05,587 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 07:42:05,588 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 110 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:05,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 401 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132729 states. [2023-11-19 07:42:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132729 to 132727. [2023-11-19 07:42:08,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132727 states, 132726 states have (on average 1.4846224552838179) internal successors, (197048), 132726 states have internal predecessors, (197048), 0 states have call successors, (0), 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 07:42:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132727 states to 132727 states and 197048 transitions. [2023-11-19 07:42:09,331 INFO L78 Accepts]: Start accepts. Automaton has 132727 states and 197048 transitions. Word has length 103 [2023-11-19 07:42:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:09,332 INFO L495 AbstractCegarLoop]: Abstraction has 132727 states and 197048 transitions. [2023-11-19 07:42:09,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 07:42:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 132727 states and 197048 transitions. [2023-11-19 07:42:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:42:09,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:09,349 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:42:09,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:42:09,349 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:09,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:09,350 INFO L85 PathProgramCache]: Analyzing trace with hash 891720263, now seen corresponding path program 1 times [2023-11-19 07:42:09,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:09,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574285551] [2023-11-19 07:42:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:09,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:09,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:09,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574285551] [2023-11-19 07:42:09,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574285551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:09,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:09,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:09,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663678948] [2023-11-19 07:42:09,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:09,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:09,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:09,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:09,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:09,440 INFO L87 Difference]: Start difference. First operand 132727 states and 197048 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 07:42:14,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:14,823 INFO L93 Difference]: Finished difference Result 396375 states and 587895 transitions. [2023-11-19 07:42:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-11-19 07:42:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:15,359 INFO L225 Difference]: With dead ends: 396375 [2023-11-19 07:42:15,360 INFO L226 Difference]: Without dead ends: 264057 [2023-11-19 07:42:15,484 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 07:42:15,485 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 130 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:15,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 417 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:15,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264057 states. [2023-11-19 07:42:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264057 to 264055. [2023-11-19 07:42:22,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264055 states, 264054 states have (on average 1.4692184174449165) internal successors, (387953), 264054 states have internal predecessors, (387953), 0 states have call successors, (0), 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 07:42:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264055 states to 264055 states and 387953 transitions. [2023-11-19 07:42:23,991 INFO L78 Accepts]: Start accepts. Automaton has 264055 states and 387953 transitions. Word has length 103 [2023-11-19 07:42:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:23,992 INFO L495 AbstractCegarLoop]: Abstraction has 264055 states and 387953 transitions. [2023-11-19 07:42:23,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 07:42:23,992 INFO L276 IsEmpty]: Start isEmpty. Operand 264055 states and 387953 transitions. [2023-11-19 07:42:24,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:42:24,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:24,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:24,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:42:24,017 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:42:24,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:24,018 INFO L85 PathProgramCache]: Analyzing trace with hash -5673015, now seen corresponding path program 1 times [2023-11-19 07:42:24,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:24,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720315722] [2023-11-19 07:42:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:24,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:42:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:24,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720315722] [2023-11-19 07:42:24,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720315722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:24,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:24,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:24,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944602918] [2023-11-19 07:42:24,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:24,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:24,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:24,103 INFO L87 Difference]: Start difference. First operand 264055 states and 387953 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 07:42:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:32,078 INFO L93 Difference]: Finished difference Result 557067 states and 823483 transitions. [2023-11-19 07:42:32,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:32,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 103 [2023-11-19 07:42:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted.