/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:59:50,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:59:50,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:59:50,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:59:50,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:59:50,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:59:50,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:59:50,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:59:50,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:59:50,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:59:50,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:59:50,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:59:50,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:59:50,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:59:50,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:59:50,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:59:50,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:59:50,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:59:50,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:59:50,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:59:50,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:59:50,177 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:59:50,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:59:50,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:59:50,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:59:50,180 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:59:50,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:59:50,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:59:50,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:59:50,184 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:59:50,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:59:50,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:59:50,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:59:50,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:59:50,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:59:50,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:59:50,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:59:50,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:59:50,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:59:50,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:59:50,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:59:50,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:59:50,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:59:50,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:59:50,413 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:59:50,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-01-10 01:59:50,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad437382/d4900f9cb6a844c58495d72f7c003d02/FLAG118a1eab7 [2022-01-10 01:59:51,327 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:59:51,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c [2022-01-10 01:59:51,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad437382/d4900f9cb6a844c58495d72f7c003d02/FLAG118a1eab7 [2022-01-10 01:59:51,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ad437382/d4900f9cb6a844c58495d72f7c003d02 [2022-01-10 01:59:51,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:59:51,504 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:59:51,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:59:51,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:59:51,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:59:51,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:59:51" (1/1) ... [2022-01-10 01:59:51,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11747a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:51, skipping insertion in model container [2022-01-10 01:59:51,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:59:51" (1/1) ... [2022-01-10 01:59:51,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:59:51,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:59:53,204 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2022-01-10 01:59:53,227 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2022-01-10 01:59:53,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:59:53,426 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:59:54,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c[381679,381692] [2022-01-10 01:59:54,141 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.09.cil-1.c[383339,383352] [2022-01-10 01:59:54,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:59:54,229 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:59:54,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54 WrapperNode [2022-01-10 01:59:54,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:59:54,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:59:54,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:59:54,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:59:54,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:54,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:54,640 INFO L137 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-01-10 01:59:54,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:59:54,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:59:54,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:59:54,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:59:54,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:54,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:54,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:54,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:54,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:55,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:55,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:55,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:59:55,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:59:55,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:59:55,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:59:55,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (1/1) ... [2022-01-10 01:59:55,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:59:55,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:59:55,189 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:59:55,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:59:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:59:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:59:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:59:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:59:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:59:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:59:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:59:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:59:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:59:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:59:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:59:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:59:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:59:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:59:55,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:59:55,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:59:55,371 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:59:55,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:00:01,489 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:00:01,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:00:01,522 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-10 02:00:01,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:00:01 BoogieIcfgContainer [2022-01-10 02:00:01,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:00:01,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:00:01,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:00:01,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:00:01,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:59:51" (1/3) ... [2022-01-10 02:00:01,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540dc4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:00:01, skipping insertion in model container [2022-01-10 02:00:01,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:54" (2/3) ... [2022-01-10 02:00:01,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@540dc4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:00:01, skipping insertion in model container [2022-01-10 02:00:01,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:00:01" (3/3) ... [2022-01-10 02:00:01,538 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-1.c [2022-01-10 02:00:01,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:00:01,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:00:01,602 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:00:01,612 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 02:00:01,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:00:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-10 02:00:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:01,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:01,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:01,704 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:01,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash -762884387, now seen corresponding path program 1 times [2022-01-10 02:00:01,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:01,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209436508] [2022-01-10 02:00:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:01,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:02,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:02,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:02,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209436508] [2022-01-10 02:00:02,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209436508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:02,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:02,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:00:02,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474334178] [2022-01-10 02:00:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:02,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:00:02,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:02,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:00:02,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:00:02,240 INFO L87 Difference]: Start difference. First operand has 2490 states, 2458 states have (on average 1.8470301057770546) internal successors, (4540), 2461 states have internal predecessors, (4540), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:03,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:03,441 INFO L93 Difference]: Finished difference Result 5081 states and 9345 transitions. [2022-01-10 02:00:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:00:03,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:03,466 INFO L225 Difference]: With dead ends: 5081 [2022-01-10 02:00:03,466 INFO L226 Difference]: Without dead ends: 2532 [2022-01-10 02:00:03,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:00:03,478 INFO L933 BasicCegarLoop]: 4545 mSDtfsCounter, 807 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 16932 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:03,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 16932 Invalid, 618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:00:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-01-10 02:00:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2423. [2022-01-10 02:00:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2392 states have (on average 1.8323578595317727) internal successors, (4383), 2394 states have internal predecessors, (4383), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-10 02:00:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4429 transitions. [2022-01-10 02:00:03,617 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4429 transitions. Word has length 145 [2022-01-10 02:00:03,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:03,617 INFO L470 AbstractCegarLoop]: Abstraction has 2423 states and 4429 transitions. [2022-01-10 02:00:03,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4429 transitions. [2022-01-10 02:00:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:03,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:03,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:03,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:00:03,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash 854556063, now seen corresponding path program 1 times [2022-01-10 02:00:03,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:03,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576497530] [2022-01-10 02:00:03,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:03,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:03,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:03,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:03,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:03,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576497530] [2022-01-10 02:00:03,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576497530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:03,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:03,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:00:03,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53733708] [2022-01-10 02:00:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:03,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:00:03,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:00:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:00:03,894 INFO L87 Difference]: Start difference. First operand 2423 states and 4429 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:06,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:06,256 INFO L93 Difference]: Finished difference Result 3223 states and 5716 transitions. [2022-01-10 02:00:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:00:06,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:06,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:06,275 INFO L225 Difference]: With dead ends: 3223 [2022-01-10 02:00:06,275 INFO L226 Difference]: Without dead ends: 2938 [2022-01-10 02:00:06,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:00:06,280 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 5165 mSDsluCounter, 12629 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17145 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:06,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17145 Invalid, 1681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:00:06,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2022-01-10 02:00:06,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2721. [2022-01-10 02:00:06,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2665 states have (on average 1.8071294559099438) internal successors, (4816), 2668 states have internal predecessors, (4816), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-01-10 02:00:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 4901 transitions. [2022-01-10 02:00:06,367 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 4901 transitions. Word has length 145 [2022-01-10 02:00:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:06,367 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 4901 transitions. [2022-01-10 02:00:06,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 4901 transitions. [2022-01-10 02:00:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:06,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:06,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:06,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:00:06,370 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1697407709, now seen corresponding path program 1 times [2022-01-10 02:00:06,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:06,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048547333] [2022-01-10 02:00:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:06,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:06,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:06,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048547333] [2022-01-10 02:00:06,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048547333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:06,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:06,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:06,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845404250] [2022-01-10 02:00:06,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:06,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:06,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:06,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:06,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:06,544 INFO L87 Difference]: Start difference. First operand 2721 states and 4901 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:09,204 INFO L93 Difference]: Finished difference Result 3941 states and 6863 transitions. [2022-01-10 02:00:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:09,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:09,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:09,220 INFO L225 Difference]: With dead ends: 3941 [2022-01-10 02:00:09,220 INFO L226 Difference]: Without dead ends: 3358 [2022-01-10 02:00:09,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:09,224 INFO L933 BasicCegarLoop]: 4749 mSDtfsCounter, 5187 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5203 SdHoareTripleChecker+Valid, 22069 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:09,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5203 Valid, 22069 Invalid, 2520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 02:00:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-01-10 02:00:09,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2998. [2022-01-10 02:00:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2998 states, 2917 states have (on average 1.7850531367843676) internal successors, (5207), 2921 states have internal predecessors, (5207), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-01-10 02:00:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2998 states to 2998 states and 5330 transitions. [2022-01-10 02:00:09,327 INFO L78 Accepts]: Start accepts. Automaton has 2998 states and 5330 transitions. Word has length 145 [2022-01-10 02:00:09,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:09,328 INFO L470 AbstractCegarLoop]: Abstraction has 2998 states and 5330 transitions. [2022-01-10 02:00:09,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:09,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2998 states and 5330 transitions. [2022-01-10 02:00:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:09,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:09,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:09,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:00:09,331 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash -750369823, now seen corresponding path program 1 times [2022-01-10 02:00:09,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:09,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823516903] [2022-01-10 02:00:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:09,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:09,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:09,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823516903] [2022-01-10 02:00:09,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823516903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:09,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:09,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:09,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365488119] [2022-01-10 02:00:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:09,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:09,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:09,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:09,471 INFO L87 Difference]: Start difference. First operand 2998 states and 5330 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:12,122 INFO L93 Difference]: Finished difference Result 4998 states and 8540 transitions. [2022-01-10 02:00:12,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:12,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:12,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:12,141 INFO L225 Difference]: With dead ends: 4998 [2022-01-10 02:00:12,141 INFO L226 Difference]: Without dead ends: 4138 [2022-01-10 02:00:12,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:12,154 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 5181 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 22057 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:12,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 22057 Invalid, 2511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 02:00:12,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4138 states. [2022-01-10 02:00:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4138 to 3556. [2022-01-10 02:00:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 3425 states have (on average 1.7506569343065694) internal successors, (5996), 3431 states have internal predecessors, (5996), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-01-10 02:00:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 6199 transitions. [2022-01-10 02:00:12,319 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 6199 transitions. Word has length 145 [2022-01-10 02:00:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:12,320 INFO L470 AbstractCegarLoop]: Abstraction has 3556 states and 6199 transitions. [2022-01-10 02:00:12,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 6199 transitions. [2022-01-10 02:00:12,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:12,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:12,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:12,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:00:12,330 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1494188575, now seen corresponding path program 1 times [2022-01-10 02:00:12,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:12,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984159079] [2022-01-10 02:00:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:12,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:12,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984159079] [2022-01-10 02:00:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984159079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:12,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374371008] [2022-01-10 02:00:12,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:12,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:12,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:12,491 INFO L87 Difference]: Start difference. First operand 3556 states and 6199 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:14,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:14,924 INFO L93 Difference]: Finished difference Result 7038 states and 11757 transitions. [2022-01-10 02:00:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:14,954 INFO L225 Difference]: With dead ends: 7038 [2022-01-10 02:00:14,954 INFO L226 Difference]: Without dead ends: 5620 [2022-01-10 02:00:14,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:14,964 INFO L933 BasicCegarLoop]: 4732 mSDtfsCounter, 5180 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5196 SdHoareTripleChecker+Valid, 22052 SdHoareTripleChecker+Invalid, 2503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:14,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5196 Valid, 22052 Invalid, 2503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:00:14,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-01-10 02:00:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 4673. [2022-01-10 02:00:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4673 states, 4442 states have (on average 1.7050877982890589) internal successors, (7574), 4452 states have internal predecessors, (7574), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-01-10 02:00:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 7943 transitions. [2022-01-10 02:00:15,207 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 7943 transitions. Word has length 145 [2022-01-10 02:00:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:15,207 INFO L470 AbstractCegarLoop]: Abstraction has 4673 states and 7943 transitions. [2022-01-10 02:00:15,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 7943 transitions. [2022-01-10 02:00:15,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:15,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:15,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:15,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:00:15,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1982235681, now seen corresponding path program 1 times [2022-01-10 02:00:15,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:15,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700080424] [2022-01-10 02:00:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:15,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:15,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:15,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700080424] [2022-01-10 02:00:15,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700080424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:15,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:15,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:15,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255645375] [2022-01-10 02:00:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:15,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:15,374 INFO L87 Difference]: Start difference. First operand 4673 states and 7943 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:18,096 INFO L93 Difference]: Finished difference Result 11117 states and 18207 transitions. [2022-01-10 02:00:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:18,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:18,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:18,169 INFO L225 Difference]: With dead ends: 11117 [2022-01-10 02:00:18,169 INFO L226 Difference]: Without dead ends: 8582 [2022-01-10 02:00:18,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:18,213 INFO L933 BasicCegarLoop]: 4727 mSDtfsCounter, 5179 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 22047 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:18,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 22047 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 02:00:18,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8582 states. [2022-01-10 02:00:18,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8582 to 6914. [2022-01-10 02:00:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6914 states, 6483 states have (on average 1.6566404442387783) internal successors, (10740), 6501 states have internal predecessors, (10740), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-01-10 02:00:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6914 states to 6914 states and 11459 transitions. [2022-01-10 02:00:18,623 INFO L78 Accepts]: Start accepts. Automaton has 6914 states and 11459 transitions. Word has length 145 [2022-01-10 02:00:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:18,624 INFO L470 AbstractCegarLoop]: Abstraction has 6914 states and 11459 transitions. [2022-01-10 02:00:18,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6914 states and 11459 transitions. [2022-01-10 02:00:18,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:18,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:18,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:18,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:00:18,630 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:18,630 INFO L85 PathProgramCache]: Analyzing trace with hash 889600479, now seen corresponding path program 1 times [2022-01-10 02:00:18,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:18,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990817357] [2022-01-10 02:00:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:18,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:18,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:18,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:18,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990817357] [2022-01-10 02:00:18,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990817357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:18,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:18,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:18,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605320434] [2022-01-10 02:00:18,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:18,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:18,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:18,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:18,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:18,777 INFO L87 Difference]: Start difference. First operand 6914 states and 11459 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:21,408 INFO L93 Difference]: Finished difference Result 19276 states and 31169 transitions. [2022-01-10 02:00:21,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:21,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:21,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:21,463 INFO L225 Difference]: With dead ends: 19276 [2022-01-10 02:00:21,463 INFO L226 Difference]: Without dead ends: 14500 [2022-01-10 02:00:21,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:21,487 INFO L933 BasicCegarLoop]: 4535 mSDtfsCounter, 5256 mSDsluCounter, 16820 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5272 SdHoareTripleChecker+Valid, 21355 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:21,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5272 Valid, 21355 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:00:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14500 states. [2022-01-10 02:00:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 11411. [2022-01-10 02:00:22,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.6156899810964083) internal successors, (17094), 10614 states have internal predecessors, (17094), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-01-10 02:00:22,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18567 transitions. [2022-01-10 02:00:22,063 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18567 transitions. Word has length 145 [2022-01-10 02:00:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:22,064 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18567 transitions. [2022-01-10 02:00:22,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18567 transitions. [2022-01-10 02:00:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:22,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:22,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:22,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:00:22,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash -392571807, now seen corresponding path program 1 times [2022-01-10 02:00:22,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:22,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962825764] [2022-01-10 02:00:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:22,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:22,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:22,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:22,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962825764] [2022-01-10 02:00:22,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962825764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:22,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:22,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:22,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884917993] [2022-01-10 02:00:22,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:22,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:22,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:22,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:22,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:22,199 INFO L87 Difference]: Start difference. First operand 11411 states and 18567 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:24,215 INFO L93 Difference]: Finished difference Result 23942 states and 38818 transitions. [2022-01-10 02:00:24,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:00:24,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:24,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:24,268 INFO L225 Difference]: With dead ends: 23942 [2022-01-10 02:00:24,268 INFO L226 Difference]: Without dead ends: 14669 [2022-01-10 02:00:24,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:00:24,299 INFO L933 BasicCegarLoop]: 4446 mSDtfsCounter, 4834 mSDsluCounter, 16571 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 21017 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:24,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4851 Valid, 21017 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:00:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-01-10 02:00:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11411. [2022-01-10 02:00:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 10580 states have (on average 1.612570888468809) internal successors, (17061), 10614 states have internal predecessors, (17061), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-01-10 02:00:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 18534 transitions. [2022-01-10 02:00:24,851 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 18534 transitions. Word has length 145 [2022-01-10 02:00:24,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:24,852 INFO L470 AbstractCegarLoop]: Abstraction has 11411 states and 18534 transitions. [2022-01-10 02:00:24,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 18534 transitions. [2022-01-10 02:00:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:24,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:24,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:24,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:00:24,861 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:24,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2059919775, now seen corresponding path program 1 times [2022-01-10 02:00:24,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:24,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873030546] [2022-01-10 02:00:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:24,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:24,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:24,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873030546] [2022-01-10 02:00:24,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873030546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:24,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:24,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:24,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734292407] [2022-01-10 02:00:24,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:24,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:24,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:24,980 INFO L87 Difference]: Start difference. First operand 11411 states and 18534 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:28,667 INFO L93 Difference]: Finished difference Result 35561 states and 57055 transitions. [2022-01-10 02:00:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:28,776 INFO L225 Difference]: With dead ends: 35561 [2022-01-10 02:00:28,776 INFO L226 Difference]: Without dead ends: 26288 [2022-01-10 02:00:28,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:28,809 INFO L933 BasicCegarLoop]: 4711 mSDtfsCounter, 5170 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:28,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 22031 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:00:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26288 states. [2022-01-10 02:00:29,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26288 to 20469. [2022-01-10 02:00:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20469 states, 18838 states have (on average 1.5828113387833103) internal successors, (29817), 18904 states have internal predecessors, (29817), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-01-10 02:00:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20469 states to 20469 states and 32960 transitions. [2022-01-10 02:00:30,040 INFO L78 Accepts]: Start accepts. Automaton has 20469 states and 32960 transitions. Word has length 145 [2022-01-10 02:00:30,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:30,040 INFO L470 AbstractCegarLoop]: Abstraction has 20469 states and 32960 transitions. [2022-01-10 02:00:30,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20469 states and 32960 transitions. [2022-01-10 02:00:30,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:30,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:30,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:30,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:00:30,055 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash 337917089, now seen corresponding path program 1 times [2022-01-10 02:00:30,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:30,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764330370] [2022-01-10 02:00:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:30,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:30,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:30,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764330370] [2022-01-10 02:00:30,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764330370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:30,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:30,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:30,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229439116] [2022-01-10 02:00:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:30,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:30,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:30,195 INFO L87 Difference]: Start difference. First operand 20469 states and 32960 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:35,217 INFO L93 Difference]: Finished difference Result 68201 states and 109703 transitions. [2022-01-10 02:00:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:35,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 02:00:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:35,482 INFO L225 Difference]: With dead ends: 68201 [2022-01-10 02:00:35,483 INFO L226 Difference]: Without dead ends: 49870 [2022-01-10 02:00:35,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:35,544 INFO L933 BasicCegarLoop]: 4704 mSDtfsCounter, 5172 mSDsluCounter, 17320 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5188 SdHoareTripleChecker+Valid, 22024 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:35,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5188 Valid, 22024 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:00:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49870 states. [2022-01-10 02:00:37,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49870 to 38646. [2022-01-10 02:00:37,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38646 states, 35415 states have (on average 1.564845404489623) internal successors, (55419), 35545 states have internal predecessors, (55419), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-01-10 02:00:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38646 states to 38646 states and 62388 transitions. [2022-01-10 02:00:38,029 INFO L78 Accepts]: Start accepts. Automaton has 38646 states and 62388 transitions. Word has length 145 [2022-01-10 02:00:38,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:38,029 INFO L470 AbstractCegarLoop]: Abstraction has 38646 states and 62388 transitions. [2022-01-10 02:00:38,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 38646 states and 62388 transitions. [2022-01-10 02:00:38,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:00:38,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:38,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:00:38,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:00:38,057 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:38,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 5273951, now seen corresponding path program 1 times [2022-01-10 02:00:38,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:38,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441033172] [2022-01-10 02:00:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:38,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-10 02:00:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-01-10 02:00:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:38,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:00:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-01-10 02:00:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:38,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:38,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441033172] [2022-01-10 02:00:38,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441033172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:38,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:38,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:38,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448484192] [2022-01-10 02:00:38,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:38,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:38,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:38,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:38,198 INFO L87 Difference]: Start difference. First operand 38646 states and 62388 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)