/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 07:53:30,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 07:53:30,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 07:53:30,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 07:53:30,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 07:53:30,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 07:53:30,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 07:53:30,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 07:53:30,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 07:53:30,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 07:53:30,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 07:53:30,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 07:53:30,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 07:53:30,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 07:53:30,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 07:53:30,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 07:53:30,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 07:53:30,347 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 07:53:30,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 07:53:30,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 07:53:30,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 07:53:30,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 07:53:30,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 07:53:30,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 07:53:30,361 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 07:53:30,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 07:53:30,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 07:53:30,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 07:53:30,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 07:53:30,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 07:53:30,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 07:53:30,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 07:53:30,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 07:53:30,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 07:53:30,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 07:53:30,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 07:53:30,365 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 07:53:30,365 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 07:53:30,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 07:53:30,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 07:53:30,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 07:53:30,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 07:53:30,580 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 07:53:30,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2022-01-31 07:53:30,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7ca5c10/2f6d1c30e1944813ac523890f2bb156d/FLAG111a270d4 [2022-01-31 07:53:31,007 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 07:53:31,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2022-01-31 07:53:31,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7ca5c10/2f6d1c30e1944813ac523890f2bb156d/FLAG111a270d4 [2022-01-31 07:53:31,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c7ca5c10/2f6d1c30e1944813ac523890f2bb156d [2022-01-31 07:53:31,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 07:53:31,025 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 07:53:31,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 07:53:31,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 07:53:31,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 07:53:31,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1962309a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31, skipping insertion in model container [2022-01-31 07:53:31,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 07:53:31,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 07:53:31,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i[819,832] [2022-01-31 07:53:31,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 07:53:31,188 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 07:53:31,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i[819,832] [2022-01-31 07:53:31,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 07:53:31,209 INFO L208 MainTranslator]: Completed translation [2022-01-31 07:53:31,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31 WrapperNode [2022-01-31 07:53:31,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 07:53:31,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 07:53:31,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 07:53:31,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 07:53:31,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 07:53:31,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 07:53:31,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 07:53:31,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 07:53:31,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 07:53:31,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:31,300 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) [2022-01-31 07:53:31,318 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 [2022-01-31 07:53:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 07:53:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 07:53:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 07:53:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 07:53:31,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 07:53:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 07:53:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 07:53:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-01-31 07:53:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-01-31 07:53:31,335 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 07:53:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 07:53:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 07:53:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 07:53:31,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 07:53:31,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 07:53:31,380 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 07:53:31,381 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 07:53:31,469 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 07:53:31,473 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 07:53:31,473 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 07:53:31,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:53:31 BoogieIcfgContainer [2022-01-31 07:53:31,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 07:53:31,476 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 07:53:31,476 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 07:53:31,477 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 07:53:31,479 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:53:31" (1/1) ... [2022-01-31 07:53:31,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 07:53:31 BasicIcfg [2022-01-31 07:53:31,490 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 07:53:31,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 07:53:31,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 07:53:31,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 07:53:31,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:53:31" (1/4) ... [2022-01-31 07:53:31,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef2acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:53:31, skipping insertion in model container [2022-01-31 07:53:31,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:53:31" (2/4) ... [2022-01-31 07:53:31,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef2acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:53:31, skipping insertion in model container [2022-01-31 07:53:31,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:53:31" (3/4) ... [2022-01-31 07:53:31,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef2acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 07:53:31, skipping insertion in model container [2022-01-31 07:53:31,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 07:53:31" (4/4) ... [2022-01-31 07:53:31,495 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.iJordan [2022-01-31 07:53:31,499 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 07:53:31,500 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 07:53:31,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 07:53:31,532 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-01-31 07:53:31,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 07:53:31,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 07:53:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 07:53:31,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:31,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:31,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:31,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:31,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1894753410, now seen corresponding path program 1 times [2022-01-31 07:53:31,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:31,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330803961] [2022-01-31 07:53:31,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:31,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:31,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:53:31,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:31,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330803961] [2022-01-31 07:53:31,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330803961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:53:31,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 07:53:31,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 07:53:31,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379775904] [2022-01-31 07:53:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:53:31,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 07:53:31,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:31,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 07:53:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 07:53:31,788 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:31,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:31,815 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-01-31 07:53:31,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 07:53:31,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 07:53:31,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:31,828 INFO L225 Difference]: With dead ends: 28 [2022-01-31 07:53:31,828 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 07:53:31,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 07:53:31,837 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:31,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:53:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 07:53:31,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-31 07:53:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-31 07:53:31,865 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2022-01-31 07:53:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:31,865 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-31 07:53:31,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-31 07:53:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 07:53:31,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:31,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:31,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 07:53:31,868 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:31,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:31,873 INFO L85 PathProgramCache]: Analyzing trace with hash 974802628, now seen corresponding path program 1 times [2022-01-31 07:53:31,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:31,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550721533] [2022-01-31 07:53:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:31,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:53:31,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:31,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550721533] [2022-01-31 07:53:31,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550721533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:53:31,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 07:53:31,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 07:53:31,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375668740] [2022-01-31 07:53:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:53:31,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 07:53:31,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 07:53:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 07:53:31,961 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:32,021 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-01-31 07:53:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 07:53:32,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 07:53:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:32,022 INFO L225 Difference]: With dead ends: 25 [2022-01-31 07:53:32,022 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 07:53:32,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 07:53:32,027 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:32,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:53:32,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 07:53:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-01-31 07:53:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-31 07:53:32,035 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-01-31 07:53:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:32,035 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-31 07:53:32,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:32,036 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-31 07:53:32,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-31 07:53:32,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:32,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:32,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 07:53:32,043 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash 954895906, now seen corresponding path program 1 times [2022-01-31 07:53:32,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:32,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349616241] [2022-01-31 07:53:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:32,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 07:53:32,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:32,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349616241] [2022-01-31 07:53:32,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349616241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:32,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248319313] [2022-01-31 07:53:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:32,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:32,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:32,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:32,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 07:53:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:32,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-31 07:53:32,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 07:53:32,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 07:53:32,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248319313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 07:53:32,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 07:53:32,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-01-31 07:53:32,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989915286] [2022-01-31 07:53:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 07:53:32,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 07:53:32,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:32,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 07:53:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 07:53:32,238 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:32,261 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-01-31 07:53:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 07:53:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-01-31 07:53:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:32,262 INFO L225 Difference]: With dead ends: 27 [2022-01-31 07:53:32,262 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 07:53:32,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 07:53:32,265 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:32,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:53:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 07:53:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-01-31 07:53:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-01-31 07:53:32,274 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2022-01-31 07:53:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:32,274 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-01-31 07:53:32,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-01-31 07:53:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 07:53:32,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:32,277 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] [2022-01-31 07:53:32,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 07:53:32,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:32,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:32,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:32,495 INFO L85 PathProgramCache]: Analyzing trace with hash 866862345, now seen corresponding path program 1 times [2022-01-31 07:53:32,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:32,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769230427] [2022-01-31 07:53:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:32,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:32,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 07:53:32,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:32,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769230427] [2022-01-31 07:53:32,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769230427] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:32,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457222400] [2022-01-31 07:53:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:32,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:32,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:32,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:32,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 07:53:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:32,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 07:53:32,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 07:53:32,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 07:53:32,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457222400] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:32,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:32,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 07:53:32,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023498380] [2022-01-31 07:53:32,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:32,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 07:53:32,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 07:53:32,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 07:53:32,689 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:32,776 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-01-31 07:53:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 07:53:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-31 07:53:32,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:32,777 INFO L225 Difference]: With dead ends: 31 [2022-01-31 07:53:32,777 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 07:53:32,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-31 07:53:32,778 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:32,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 45 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:53:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 07:53:32,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-01-31 07:53:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-01-31 07:53:32,781 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2022-01-31 07:53:32,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:32,781 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-01-31 07:53:32,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:32,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-01-31 07:53:32,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-31 07:53:32,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:32,782 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:32,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 07:53:32,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-31 07:53:32,999 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:33,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash -814123601, now seen corresponding path program 2 times [2022-01-31 07:53:33,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:33,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404025653] [2022-01-31 07:53:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:33,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 07:53:33,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404025653] [2022-01-31 07:53:33,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404025653] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172696092] [2022-01-31 07:53:33,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 07:53:33,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:33,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:33,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 07:53:33,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 07:53:33,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:33,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 07:53:33,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 07:53:33,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 07:53:33,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172696092] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:33,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:33,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 07:53:33,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154421086] [2022-01-31 07:53:33,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:33,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 07:53:33,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 07:53:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-31 07:53:33,255 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:33,323 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2022-01-31 07:53:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 07:53:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-01-31 07:53:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:33,325 INFO L225 Difference]: With dead ends: 40 [2022-01-31 07:53:33,325 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 07:53:33,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-01-31 07:53:33,326 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:33,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 34 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 07:53:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 07:53:33,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-01-31 07:53:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-01-31 07:53:33,340 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 26 [2022-01-31 07:53:33,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:33,341 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-01-31 07:53:33,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:33,341 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-01-31 07:53:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 07:53:33,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:33,342 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:33,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 07:53:33,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:33,561 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:33,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1553480324, now seen corresponding path program 3 times [2022-01-31 07:53:33,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:33,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691482719] [2022-01-31 07:53:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:33,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-31 07:53:33,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:33,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691482719] [2022-01-31 07:53:33,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691482719] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:33,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854308434] [2022-01-31 07:53:33,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 07:53:33,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:33,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:33,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 07:53:33,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-31 07:53:33,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:33,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 07:53:33,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 07:53:33,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:33,933 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 07:53:33,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854308434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:33,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:33,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-01-31 07:53:33,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070158017] [2022-01-31 07:53:33,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:33,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-31 07:53:33,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-31 07:53:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2022-01-31 07:53:33,936 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:34,169 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2022-01-31 07:53:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-31 07:53:34,170 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-01-31 07:53:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:34,170 INFO L225 Difference]: With dead ends: 61 [2022-01-31 07:53:34,170 INFO L226 Difference]: Without dead ends: 61 [2022-01-31 07:53:34,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2022-01-31 07:53:34,172 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 93 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:34,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 52 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:53:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-01-31 07:53:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2022-01-31 07:53:34,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 54 states have internal predecessors, (67), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2022-01-31 07:53:34,175 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 35 [2022-01-31 07:53:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:34,175 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2022-01-31 07:53:34,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2022-01-31 07:53:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-31 07:53:34,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:34,176 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:34,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 07:53:34,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:34,394 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:34,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:34,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1274973114, now seen corresponding path program 4 times [2022-01-31 07:53:34,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:34,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142954605] [2022-01-31 07:53:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:34,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:34,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142954605] [2022-01-31 07:53:34,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142954605] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:34,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452825809] [2022-01-31 07:53:34,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 07:53:34,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:34,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:34,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 07:53:34,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 07:53:34,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:34,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 07:53:34,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:34,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:34,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452825809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:34,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:34,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2022-01-31 07:53:34,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312412] [2022-01-31 07:53:34,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:34,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-31 07:53:34,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-31 07:53:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2022-01-31 07:53:34,722 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:34,875 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2022-01-31 07:53:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-31 07:53:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-01-31 07:53:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:34,876 INFO L225 Difference]: With dead ends: 74 [2022-01-31 07:53:34,876 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 07:53:34,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=288, Invalid=468, Unknown=0, NotChecked=0, Total=756 [2022-01-31 07:53:34,876 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:34,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 45 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:53:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 07:53:34,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-01-31 07:53:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 68 states have internal predecessors, (81), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2022-01-31 07:53:34,880 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 55 [2022-01-31 07:53:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:34,880 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2022-01-31 07:53:34,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2022-01-31 07:53:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-31 07:53:34,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:34,882 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:34,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 07:53:35,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:35,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:35,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:35,100 INFO L85 PathProgramCache]: Analyzing trace with hash 915740620, now seen corresponding path program 5 times [2022-01-31 07:53:35,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:35,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464135104] [2022-01-31 07:53:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:35,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:35,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464135104] [2022-01-31 07:53:35,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464135104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883247716] [2022-01-31 07:53:35,245 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 07:53:35,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:35,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:35,251 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:35,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 07:53:35,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-01-31 07:53:35,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:35,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 07:53:35,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:35,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:35,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883247716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:35,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:35,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 30 [2022-01-31 07:53:35,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166636504] [2022-01-31 07:53:35,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:35,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 07:53:35,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 07:53:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2022-01-31 07:53:35,759 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:36,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:36,159 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2022-01-31 07:53:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-31 07:53:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2022-01-31 07:53:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:36,160 INFO L225 Difference]: With dead ends: 102 [2022-01-31 07:53:36,160 INFO L226 Difference]: Without dead ends: 102 [2022-01-31 07:53:36,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1163, Invalid=1917, Unknown=0, NotChecked=0, Total=3080 [2022-01-31 07:53:36,162 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:36,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 50 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:53:36,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-01-31 07:53:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-01-31 07:53:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 96 states have internal predecessors, (109), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2022-01-31 07:53:36,168 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 69 [2022-01-31 07:53:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:36,168 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2022-01-31 07:53:36,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.2666666666666666) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2022-01-31 07:53:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-31 07:53:36,170 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:36,170 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:36,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 07:53:36,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:36,384 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:36,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1738622608, now seen corresponding path program 6 times [2022-01-31 07:53:36,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:36,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935128887] [2022-01-31 07:53:36,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:36,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-31 07:53:36,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:36,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935128887] [2022-01-31 07:53:36,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935128887] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:36,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320093960] [2022-01-31 07:53:36,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 07:53:36,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:36,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:36,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 07:53:37,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2022-01-31 07:53:37,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:37,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 07:53:37,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2022-01-31 07:53:37,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2022-01-31 07:53:37,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320093960] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:37,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:37,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 13, 13] total 52 [2022-01-31 07:53:37,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764842352] [2022-01-31 07:53:37,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:37,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-31 07:53:37,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-31 07:53:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2022-01-31 07:53:37,837 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 52 states, 52 states have (on average 2.5961538461538463) internal successors, (135), 51 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:38,915 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2022-01-31 07:53:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-31 07:53:38,915 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5961538461538463) internal successors, (135), 51 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2022-01-31 07:53:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:38,916 INFO L225 Difference]: With dead ends: 141 [2022-01-31 07:53:38,916 INFO L226 Difference]: Without dead ends: 141 [2022-01-31 07:53:38,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2089 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2043, Invalid=8057, Unknown=0, NotChecked=0, Total=10100 [2022-01-31 07:53:38,919 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 226 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:38,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 77 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 07:53:38,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-01-31 07:53:38,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2022-01-31 07:53:38,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 134 states have internal predecessors, (159), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:38,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2022-01-31 07:53:38,923 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 97 [2022-01-31 07:53:38,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:38,924 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2022-01-31 07:53:38,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5961538461538463) internal successors, (135), 51 states have internal predecessors, (135), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:38,924 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2022-01-31 07:53:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-31 07:53:38,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:38,925 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:38,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 07:53:39,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:39,143 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash -89616626, now seen corresponding path program 7 times [2022-01-31 07:53:39,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:39,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126041662] [2022-01-31 07:53:39,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:39,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:39,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:39,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126041662] [2022-01-31 07:53:39,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126041662] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:39,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053252956] [2022-01-31 07:53:39,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 07:53:39,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:39,564 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:39,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 07:53:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:39,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-31 07:53:39,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:39,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 729 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:40,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053252956] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:40,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:40,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 60 [2022-01-31 07:53:40,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336839536] [2022-01-31 07:53:40,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:40,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-31 07:53:40,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:40,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-31 07:53:40,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2022-01-31 07:53:40,819 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:42,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:42,091 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2022-01-31 07:53:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-31 07:53:42,092 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2022-01-31 07:53:42,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:42,093 INFO L225 Difference]: With dead ends: 198 [2022-01-31 07:53:42,093 INFO L226 Difference]: Without dead ends: 198 [2022-01-31 07:53:42,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5018, Invalid=8322, Unknown=0, NotChecked=0, Total=13340 [2022-01-31 07:53:42,096 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 130 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:42,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 40 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 07:53:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-31 07:53:42,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-01-31 07:53:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.1302083333333333) internal successors, (217), 192 states have internal predecessors, (217), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 222 transitions. [2022-01-31 07:53:42,103 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 222 transitions. Word has length 135 [2022-01-31 07:53:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:42,104 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 222 transitions. [2022-01-31 07:53:42,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.1333333333333333) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 222 transitions. [2022-01-31 07:53:42,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-31 07:53:42,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:42,105 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:42,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 07:53:42,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 07:53:42,338 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:42,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:42,338 INFO L85 PathProgramCache]: Analyzing trace with hash -451596876, now seen corresponding path program 8 times [2022-01-31 07:53:42,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609599813] [2022-01-31 07:53:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:42,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:43,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609599813] [2022-01-31 07:53:43,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609599813] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923828936] [2022-01-31 07:53:43,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 07:53:43,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:43,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:43,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:43,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 07:53:43,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 07:53:43,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:43,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-31 07:53:43,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:44,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:46,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923828936] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:46,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:46,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59, 59] total 118 [2022-01-31 07:53:46,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067997108] [2022-01-31 07:53:46,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:46,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2022-01-31 07:53:46,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2022-01-31 07:53:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6788, Invalid=7018, Unknown=0, NotChecked=0, Total=13806 [2022-01-31 07:53:46,774 INFO L87 Difference]: Start difference. First operand 198 states and 222 transitions. Second operand has 118 states, 118 states have (on average 2.0677966101694913) internal successors, (244), 117 states have internal predecessors, (244), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:53:49,854 INFO L93 Difference]: Finished difference Result 314 states and 338 transitions. [2022-01-31 07:53:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-31 07:53:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0677966101694913) internal successors, (244), 117 states have internal predecessors, (244), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2022-01-31 07:53:49,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:53:49,858 INFO L225 Difference]: With dead ends: 314 [2022-01-31 07:53:49,858 INFO L226 Difference]: Without dead ends: 314 [2022-01-31 07:53:49,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8373 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=20127, Invalid=33465, Unknown=0, NotChecked=0, Total=53592 [2022-01-31 07:53:49,871 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 246 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 07:53:49,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 45 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 07:53:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-31 07:53:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-01-31 07:53:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.0811688311688312) internal successors, (333), 308 states have internal predecessors, (333), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:53:49,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 338 transitions. [2022-01-31 07:53:49,884 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 338 transitions. Word has length 193 [2022-01-31 07:53:49,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:53:49,885 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 338 transitions. [2022-01-31 07:53:49,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 118 states have (on average 2.0677966101694913) internal successors, (244), 117 states have internal predecessors, (244), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:53:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 338 transitions. [2022-01-31 07:53:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-31 07:53:49,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:53:49,887 INFO L514 BasicCegarLoop]: trace histogram [114, 114, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:53:49,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-31 07:53:50,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:50,106 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:53:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:53:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1572575360, now seen corresponding path program 9 times [2022-01-31 07:53:50,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:53:50,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274967215] [2022-01-31 07:53:50,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:53:50,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:53:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:53:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:53:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13711 backedges. 0 proven. 12996 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2022-01-31 07:53:54,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:53:54,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274967215] [2022-01-31 07:53:54,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274967215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:53:54,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320092731] [2022-01-31 07:53:54,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 07:53:54,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:53:54,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:53:54,296 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:53:54,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 07:53:54,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-01-31 07:53:54,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:53:54,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-31 07:53:54,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:53:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 13711 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 12996 trivial. 0 not checked. [2022-01-31 07:53:56,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:53:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13711 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 12996 trivial. 0 not checked. [2022-01-31 07:53:57,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320092731] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:53:57,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:53:57,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 25, 25] total 164 [2022-01-31 07:53:57,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935463611] [2022-01-31 07:53:57,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:53:57,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-01-31 07:53:57,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:53:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-01-31 07:53:57,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7915, Invalid=18817, Unknown=0, NotChecked=0, Total=26732 [2022-01-31 07:53:57,347 INFO L87 Difference]: Start difference. First operand 314 states and 338 transitions. Second operand has 164 states, 164 states have (on average 2.3353658536585367) internal successors, (383), 163 states have internal predecessors, (383), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:54:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:54:04,174 INFO L93 Difference]: Finished difference Result 389 states and 437 transitions. [2022-01-31 07:54:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-01-31 07:54:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 2.3353658536585367) internal successors, (383), 163 states have internal predecessors, (383), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 309 [2022-01-31 07:54:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:54:04,176 INFO L225 Difference]: With dead ends: 389 [2022-01-31 07:54:04,176 INFO L226 Difference]: Without dead ends: 389 [2022-01-31 07:54:04,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20999 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=23739, Invalid=81561, Unknown=0, NotChecked=0, Total=105300 [2022-01-31 07:54:04,184 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 623 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 07:54:04,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [624 Valid, 77 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 07:54:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-01-31 07:54:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2022-01-31 07:54:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 382 states have (on average 1.1282722513089005) internal successors, (431), 382 states have internal predecessors, (431), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:54:04,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 436 transitions. [2022-01-31 07:54:04,189 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 436 transitions. Word has length 309 [2022-01-31 07:54:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:54:04,190 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 436 transitions. [2022-01-31 07:54:04,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 2.3353658536585367) internal successors, (383), 163 states have internal predecessors, (383), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:54:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 436 transitions. [2022-01-31 07:54:04,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-01-31 07:54:04,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:54:04,194 INFO L514 BasicCegarLoop]: trace histogram [115, 115, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:54:04,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 07:54:04,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 07:54:04,407 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:54:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:54:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1554445534, now seen corresponding path program 10 times [2022-01-31 07:54:04,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:54:04,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813048634] [2022-01-31 07:54:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:54:04,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:54:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:54:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:54:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:54:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16376 backedges. 0 proven. 13225 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-01-31 07:54:08,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:54:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813048634] [2022-01-31 07:54:08,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813048634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:54:08,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137225205] [2022-01-31 07:54:08,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 07:54:08,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:54:08,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:54:08,399 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:54:08,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 07:54:08,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 07:54:08,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 07:54:08,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 117 conjunts are in the unsatisfiable core [2022-01-31 07:54:08,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 07:54:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16376 backedges. 0 proven. 13225 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-01-31 07:54:09,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 07:54:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16376 backedges. 0 proven. 13225 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-01-31 07:54:18,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137225205] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 07:54:18,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 07:54:18,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 118, 118] total 236 [2022-01-31 07:54:18,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275914595] [2022-01-31 07:54:18,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 07:54:18,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 236 states [2022-01-31 07:54:18,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 07:54:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2022-01-31 07:54:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27497, Invalid=27963, Unknown=0, NotChecked=0, Total=55460 [2022-01-31 07:54:18,835 INFO L87 Difference]: Start difference. First operand 388 states and 436 transitions. Second operand has 236 states, 236 states have (on average 2.0338983050847457) internal successors, (480), 235 states have internal predecessors, (480), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:54:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 07:54:30,831 INFO L93 Difference]: Finished difference Result 622 states and 670 transitions. [2022-01-31 07:54:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2022-01-31 07:54:30,832 INFO L78 Accepts]: Start accepts. Automaton has has 236 states, 236 states have (on average 2.0338983050847457) internal successors, (480), 235 states have internal predecessors, (480), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 383 [2022-01-31 07:54:30,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 07:54:30,834 INFO L225 Difference]: With dead ends: 622 [2022-01-31 07:54:30,834 INFO L226 Difference]: Without dead ends: 622 [2022-01-31 07:54:30,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 466 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34156 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=82018, Invalid=136538, Unknown=0, NotChecked=0, Total=218556 [2022-01-31 07:54:30,844 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 482 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 07:54:30,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 55 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-31 07:54:30,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-01-31 07:54:30,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2022-01-31 07:54:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 616 states have (on average 1.0795454545454546) internal successors, (665), 616 states have internal predecessors, (665), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 07:54:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 670 transitions. [2022-01-31 07:54:30,853 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 670 transitions. Word has length 383 [2022-01-31 07:54:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 07:54:30,853 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 670 transitions. [2022-01-31 07:54:30,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 236 states, 236 states have (on average 2.0338983050847457) internal successors, (480), 235 states have internal predecessors, (480), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 07:54:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 670 transitions. [2022-01-31 07:54:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-01-31 07:54:30,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 07:54:30,860 INFO L514 BasicCegarLoop]: trace histogram [232, 232, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 07:54:30,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-31 07:54:31,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 07:54:31,086 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 07:54:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 07:54:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash -346245164, now seen corresponding path program 11 times [2022-01-31 07:54:31,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 07:54:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699012483] [2022-01-31 07:54:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 07:54:31,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 07:54:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:54:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 07:54:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 07:54:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 56975 backedges. 0 proven. 53824 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-01-31 07:54:41,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 07:54:41,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699012483] [2022-01-31 07:54:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699012483] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 07:54:41,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569807313] [2022-01-31 07:54:41,742 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 07:54:41,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 07:54:41,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 07:54:41,760 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 07:54:41,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process