/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 20:47:42,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 20:47:42,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 20:47:42,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-23 20:47:42,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 20:47:42,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 20:47:42,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 20:47:42,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 20:47:42,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 20:47:42,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 20:47:42,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 20:47:42,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 20:47:42,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 20:47:42,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 20:47:42,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 20:47:42,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 20:47:42,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 20:47:42,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 20:47:42,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 20:47:42,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 20:47:42,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 20:47:42,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 20:47:42,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 20:47:42,599 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 20:47:42,599 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 20:47:42,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 20:47:42,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 20:47:42,600 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 20:47:42,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 20:47:42,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 20:47:42,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 20:47:42,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 20:47:42,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 20:47:42,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 20:47:42,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 20:47:42,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 20:47:42,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:47:42,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 20:47:42,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 20:47:42,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 20:47:42,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 20:47:42,603 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 20:47:42,604 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 20:47:42,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 20:47:42,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 20:47:42,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 20:47:42,760 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 20:47:42,760 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 20:47:42,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-02-23 20:47:42,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177b76c8f/9d8ce235392f486795c8a448623b1242/FLAG2a0f7bbb0 [2022-02-23 20:47:43,090 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 20:47:43,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i [2022-02-23 20:47:43,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177b76c8f/9d8ce235392f486795c8a448623b1242/FLAG2a0f7bbb0 [2022-02-23 20:47:43,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177b76c8f/9d8ce235392f486795c8a448623b1242 [2022-02-23 20:47:43,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 20:47:43,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 20:47:43,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 20:47:43,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 20:47:43,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 20:47:43,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e9d2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43, skipping insertion in model container [2022-02-23 20:47:43,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 20:47:43,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 20:47:43,674 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2022-02-23 20:47:43,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:47:43,690 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 20:47:43,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/fragtest_simple.i[893,906] [2022-02-23 20:47:43,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 20:47:43,723 INFO L208 MainTranslator]: Completed translation [2022-02-23 20:47:43,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43 WrapperNode [2022-02-23 20:47:43,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 20:47:43,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 20:47:43,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 20:47:43,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 20:47:43,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 20:47:43,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 20:47:43,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 20:47:43,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 20:47:43,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (1/1) ... [2022-02-23 20:47:43,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 20:47:43,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:43,779 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) [2022-02-23 20:47:43,785 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 [2022-02-23 20:47:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 20:47:43,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 20:47:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 20:47:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 20:47:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 20:47:43,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 20:47:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 20:47:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 20:47:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-23 20:47:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-23 20:47:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 20:47:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 20:47:43,882 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 20:47:43,883 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 20:47:44,017 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 20:47:44,021 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 20:47:44,021 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-23 20:47:44,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:47:44 BoogieIcfgContainer [2022-02-23 20:47:44,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 20:47:44,023 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 20:47:44,023 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 20:47:44,026 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 20:47:44,028 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:47:44" (1/1) ... [2022-02-23 20:47:44,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:47:44 BasicIcfg [2022-02-23 20:47:44,044 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 20:47:44,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 20:47:44,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 20:47:44,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 20:47:44,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 08:47:43" (1/4) ... [2022-02-23 20:47:44,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f992078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:47:44, skipping insertion in model container [2022-02-23 20:47:44,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 08:47:43" (2/4) ... [2022-02-23 20:47:44,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f992078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 08:47:44, skipping insertion in model container [2022-02-23 20:47:44,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 08:47:44" (3/4) ... [2022-02-23 20:47:44,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f992078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 08:47:44, skipping insertion in model container [2022-02-23 20:47:44,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 08:47:44" (4/4) ... [2022-02-23 20:47:44,052 INFO L111 eAbstractionObserver]: Analyzing ICFG fragtest_simple.iqvasr [2022-02-23 20:47:44,056 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 20:47:44,056 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 20:47:44,096 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 20:47:44,102 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 20:47:44,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 20:47:44,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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) [2022-02-23 20:47:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-23 20:47:44,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:44,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:44,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash -315946225, now seen corresponding path program 1 times [2022-02-23 20:47:44,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:44,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011520168] [2022-02-23 20:47:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:44,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:44,269 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:44,270 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011520168] [2022-02-23 20:47:44,270 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011520168] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:44,270 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:44,270 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 20:47:44,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233220836] [2022-02-23 20:47:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:44,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 20:47:44,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 20:47:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 20:47:44,296 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-02-23 20:47:44,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:44,329 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2022-02-23 20:47:44,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 20:47:44,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2022-02-23 20:47:44,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:44,337 INFO L225 Difference]: With dead ends: 48 [2022-02-23 20:47:44,337 INFO L226 Difference]: Without dead ends: 23 [2022-02-23 20:47:44,338 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 [2022-02-23 20:47:44,341 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 [2022-02-23 20:47:44,341 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] [2022-02-23 20:47:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-23 20:47:44,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-02-23 20:47:44,361 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) [2022-02-23 20:47:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-02-23 20:47:44,363 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2022-02-23 20:47:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:44,364 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-02-23 20:47:44,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-02-23 20:47:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-02-23 20:47:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-23 20:47:44,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:44,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:44,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 20:47:44,366 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash -756014827, now seen corresponding path program 1 times [2022-02-23 20:47:44,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:44,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974450834] [2022-02-23 20:47:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:44,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:44,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:44,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974450834] [2022-02-23 20:47:44,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974450834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:44,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:44,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:44,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178184422] [2022-02-23 20:47:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:44,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:44,467 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:44,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:44,468 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-02-23 20:47:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:44,546 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-02-23 20:47:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-23 20:47:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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 18 [2022-02-23 20:47:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:44,547 INFO L225 Difference]: With dead ends: 32 [2022-02-23 20:47:44,547 INFO L226 Difference]: Without dead ends: 30 [2022-02-23 20:47:44,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-23 20:47:44,548 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:44,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:47:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-02-23 20:47:44,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-02-23 20:47:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 20:47:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-02-23 20:47:44,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2022-02-23 20:47:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:44,554 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-02-23 20:47:44,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-02-23 20:47:44,555 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-02-23 20:47:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-02-23 20:47:44,555 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:44,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:44,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 20:47:44,556 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:44,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash -323876183, now seen corresponding path program 1 times [2022-02-23 20:47:44,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:44,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194333615] [2022-02-23 20:47:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:44,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-02-23 20:47:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:44,617 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:44,617 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194333615] [2022-02-23 20:47:44,617 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194333615] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 20:47:44,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 20:47:44,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-23 20:47:44,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89163157] [2022-02-23 20:47:44,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 20:47:44,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-23 20:47:44,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:44,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-23 20:47:44,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-23 20:47:44,619 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 20:47:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:44,695 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-02-23 20:47:44,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-23 20:47:44,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-02-23 20:47:44,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:44,697 INFO L225 Difference]: With dead ends: 50 [2022-02-23 20:47:44,698 INFO L226 Difference]: Without dead ends: 35 [2022-02-23 20:47:44,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-23 20:47:44,699 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:44,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 20:47:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-02-23 20:47:44,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2022-02-23 20:47:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 20:47:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-23 20:47:44,705 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 26 [2022-02-23 20:47:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:44,706 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-23 20:47:44,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-23 20:47:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-23 20:47:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-02-23 20:47:44,706 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:44,707 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:44,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-23 20:47:44,707 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:44,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1972665292, now seen corresponding path program 1 times [2022-02-23 20:47:44,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:44,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337844022] [2022-02-23 20:47:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:44,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-02-23 20:47:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:44,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:44,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337844022] [2022-02-23 20:47:44,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337844022] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:44,797 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028117856] [2022-02-23 20:47:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:44,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:44,799 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) [2022-02-23 20:47:44,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 20:47:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:44,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-23 20:47:44,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:45,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:45,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 20:47:45,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028117856] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:45,094 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:45,094 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-02-23 20:47:45,094 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681250843] [2022-02-23 20:47:45,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:45,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 20:47:45,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 20:47:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-02-23 20:47:45,101 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 20:47:45,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:45,356 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-02-23 20:47:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-23 20:47:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 28 [2022-02-23 20:47:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:45,358 INFO L225 Difference]: With dead ends: 65 [2022-02-23 20:47:45,358 INFO L226 Difference]: Without dead ends: 50 [2022-02-23 20:47:45,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-02-23 20:47:45,359 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 82 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:45,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 53 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-02-23 20:47:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2022-02-23 20:47:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 20:47:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2022-02-23 20:47:45,366 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 28 [2022-02-23 20:47:45,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:45,367 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2022-02-23 20:47:45,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 6 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 20:47:45,367 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2022-02-23 20:47:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-02-23 20:47:45,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:45,368 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:45,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 20:47:45,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:45,586 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:45,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1540710339, now seen corresponding path program 2 times [2022-02-23 20:47:45,586 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:45,586 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122604203] [2022-02-23 20:47:45,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:45,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:45,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-02-23 20:47:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-23 20:47:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:45,712 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 20:47:45,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:45,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122604203] [2022-02-23 20:47:45,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122604203] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:45,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751166574] [2022-02-23 20:47:45,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:47:45,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:45,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:45,714 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) [2022-02-23 20:47:45,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 20:47:45,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:47:45,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:45,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-23 20:47:45,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 20:47:45,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 20:47:45,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751166574] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:45,957 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:45,957 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2022-02-23 20:47:45,957 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157497874] [2022-02-23 20:47:45,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:45,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-23 20:47:45,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-23 20:47:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-02-23 20:47:45,958 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 20:47:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:46,217 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2022-02-23 20:47:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-23 20:47:46,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 38 [2022-02-23 20:47:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:46,218 INFO L225 Difference]: With dead ends: 83 [2022-02-23 20:47:46,218 INFO L226 Difference]: Without dead ends: 64 [2022-02-23 20:47:46,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2022-02-23 20:47:46,220 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 79 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:46,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 65 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:46,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-02-23 20:47:46,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2022-02-23 20:47:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 20:47:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2022-02-23 20:47:46,226 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 38 [2022-02-23 20:47:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:46,226 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2022-02-23 20:47:46,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 12 states have internal predecessors, (49), 7 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 20:47:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2022-02-23 20:47:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-02-23 20:47:46,227 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:46,227 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:46,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:46,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:46,428 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1691992838, now seen corresponding path program 3 times [2022-02-23 20:47:46,428 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:46,428 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727572911] [2022-02-23 20:47:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-02-23 20:47:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-23 20:47:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-23 20:47:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:46,545 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 20:47:46,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:46,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727572911] [2022-02-23 20:47:46,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727572911] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:46,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831265639] [2022-02-23 20:47:46,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:47:46,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:46,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:46,547 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) [2022-02-23 20:47:46,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-23 20:47:46,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-23 20:47:46,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:46,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-23 20:47:46,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 20:47:46,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-02-23 20:47:46,789 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831265639] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:46,789 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:46,789 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 17 [2022-02-23 20:47:46,789 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710759930] [2022-02-23 20:47:46,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:46,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-23 20:47:46,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-23 20:47:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-02-23 20:47:46,795 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 20:47:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:47,125 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-02-23 20:47:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 20:47:47,126 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 48 [2022-02-23 20:47:47,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:47,127 INFO L225 Difference]: With dead ends: 101 [2022-02-23 20:47:47,127 INFO L226 Difference]: Without dead ends: 78 [2022-02-23 20:47:47,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2022-02-23 20:47:47,128 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 104 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:47,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 68 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-02-23 20:47:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2022-02-23 20:47:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 20:47:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2022-02-23 20:47:47,134 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 48 [2022-02-23 20:47:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:47,134 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2022-02-23 20:47:47,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 20:47:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2022-02-23 20:47:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-02-23 20:47:47,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:47,136 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:47,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:47,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:47,350 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:47,350 INFO L85 PathProgramCache]: Analyzing trace with hash -445742223, now seen corresponding path program 4 times [2022-02-23 20:47:47,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:47,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107948868] [2022-02-23 20:47:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:47,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-02-23 20:47:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-23 20:47:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-23 20:47:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-23 20:47:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:47,455 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 20:47:47,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:47,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107948868] [2022-02-23 20:47:47,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107948868] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:47,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304008445] [2022-02-23 20:47:47,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:47:47,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:47,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:47,457 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) [2022-02-23 20:47:47,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-23 20:47:47,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:47:47,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:47,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-23 20:47:47,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 20:47:47,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-02-23 20:47:47,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304008445] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:47,740 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:47,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2022-02-23 20:47:47,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949589960] [2022-02-23 20:47:47,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:47,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-02-23 20:47:47,741 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:47,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-02-23 20:47:47,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-02-23 20:47:47,742 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-23 20:47:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:48,098 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2022-02-23 20:47:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-23 20:47:48,098 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 58 [2022-02-23 20:47:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:48,099 INFO L225 Difference]: With dead ends: 119 [2022-02-23 20:47:48,099 INFO L226 Difference]: Without dead ends: 92 [2022-02-23 20:47:48,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2022-02-23 20:47:48,101 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 139 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:48,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 66 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-02-23 20:47:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 71. [2022-02-23 20:47:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 20:47:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-02-23 20:47:48,107 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 58 [2022-02-23 20:47:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:48,107 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-02-23 20:47:48,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 18 states have internal predecessors, (69), 11 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-23 20:47:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-02-23 20:47:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-02-23 20:47:48,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:48,108 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:48,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:48,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:48,311 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:48,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2012634328, now seen corresponding path program 5 times [2022-02-23 20:47:48,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:48,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494077916] [2022-02-23 20:47:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-02-23 20:47:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-23 20:47:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-23 20:47:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-23 20:47:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:47:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 48 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-23 20:47:48,445 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:48,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494077916] [2022-02-23 20:47:48,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494077916] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:48,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745531530] [2022-02-23 20:47:48,446 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:47:48,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:48,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:48,447 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) [2022-02-23 20:47:48,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-23 20:47:48,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-02-23 20:47:48,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:48,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 14 conjunts are in the unsatisfiable core [2022-02-23 20:47:48,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-23 20:47:48,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:48,798 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 60 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-23 20:47:48,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745531530] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:48,798 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:48,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 23 [2022-02-23 20:47:48,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749657390] [2022-02-23 20:47:48,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:48,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-23 20:47:48,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-23 20:47:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-02-23 20:47:48,800 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 20:47:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:49,024 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2022-02-23 20:47:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 20:47:49,025 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 68 [2022-02-23 20:47:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:49,026 INFO L225 Difference]: With dead ends: 128 [2022-02-23 20:47:49,026 INFO L226 Difference]: Without dead ends: 97 [2022-02-23 20:47:49,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=906, Unknown=0, NotChecked=0, Total=1190 [2022-02-23 20:47:49,027 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:49,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 51 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:49,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-02-23 20:47:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 73. [2022-02-23 20:47:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 58 states have internal predecessors, (61), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 20:47:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2022-02-23 20:47:49,033 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 68 [2022-02-23 20:47:49,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:49,033 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2022-02-23 20:47:49,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 20:47:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2022-02-23 20:47:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-02-23 20:47:49,034 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:49,034 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:49,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:49,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:49,250 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:49,251 INFO L85 PathProgramCache]: Analyzing trace with hash 272693387, now seen corresponding path program 6 times [2022-02-23 20:47:49,251 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:49,251 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744312849] [2022-02-23 20:47:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:49,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-23 20:47:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-23 20:47:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-23 20:47:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-23 20:47:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-23 20:47:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 40 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-23 20:47:49,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:49,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744312849] [2022-02-23 20:47:49,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744312849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:49,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140807409] [2022-02-23 20:47:49,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:47:49,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:49,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:49,340 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) [2022-02-23 20:47:49,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-23 20:47:49,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-02-23 20:47:49,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:49,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-23 20:47:49,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-23 20:47:49,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 52 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-02-23 20:47:49,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140807409] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:49,613 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:49,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 16 [2022-02-23 20:47:49,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449440119] [2022-02-23 20:47:49,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:49,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-23 20:47:49,613 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-23 20:47:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-23 20:47:49,614 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 20:47:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:49,805 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-02-23 20:47:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-23 20:47:49,805 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 70 [2022-02-23 20:47:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:49,806 INFO L225 Difference]: With dead ends: 92 [2022-02-23 20:47:49,806 INFO L226 Difference]: Without dead ends: 90 [2022-02-23 20:47:49,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2022-02-23 20:47:49,807 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 68 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:49,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 59 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:49,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-02-23 20:47:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2022-02-23 20:47:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 67 states have internal predecessors, (70), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-23 20:47:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-02-23 20:47:49,813 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 70 [2022-02-23 20:47:49,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:49,814 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-02-23 20:47:49,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 13 states have internal predecessors, (66), 8 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-23 20:47:49,814 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-02-23 20:47:49,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-02-23 20:47:49,815 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:49,815 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:49,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:50,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:50,028 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 723143603, now seen corresponding path program 7 times [2022-02-23 20:47:50,028 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:50,028 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845791321] [2022-02-23 20:47:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:50,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-02-23 20:47:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-02-23 20:47:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-23 20:47:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-23 20:47:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-23 20:47:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-23 20:47:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:47:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 94 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-23 20:47:50,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:50,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845791321] [2022-02-23 20:47:50,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845791321] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:50,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016645451] [2022-02-23 20:47:50,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:47:50,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:50,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:50,174 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) [2022-02-23 20:47:50,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-23 20:47:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:50,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-23 20:47:50,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 132 proven. 42 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-02-23 20:47:50,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:50,559 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 110 proven. 42 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-02-23 20:47:50,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016645451] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:50,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:50,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 27 [2022-02-23 20:47:50,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926236675] [2022-02-23 20:47:50,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:50,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-02-23 20:47:50,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-02-23 20:47:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-02-23 20:47:50,561 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-02-23 20:47:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:50,923 INFO L93 Difference]: Finished difference Result 156 states and 181 transitions. [2022-02-23 20:47:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-23 20:47:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 86 [2022-02-23 20:47:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:50,926 INFO L225 Difference]: With dead ends: 156 [2022-02-23 20:47:50,926 INFO L226 Difference]: Without dead ends: 115 [2022-02-23 20:47:50,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=377, Invalid=1263, Unknown=0, NotChecked=0, Total=1640 [2022-02-23 20:47:50,929 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 134 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:50,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 103 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-02-23 20:47:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 87. [2022-02-23 20:47:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 69 states have internal predecessors, (72), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-02-23 20:47:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-02-23 20:47:50,948 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 86 [2022-02-23 20:47:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:50,948 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-02-23 20:47:50,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.0) internal successors, (81), 26 states have internal predecessors, (81), 16 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2022-02-23 20:47:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-02-23 20:47:50,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-02-23 20:47:50,952 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:50,952 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:50,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:51,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:51,171 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:51,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:51,171 INFO L85 PathProgramCache]: Analyzing trace with hash -823513514, now seen corresponding path program 8 times [2022-02-23 20:47:51,171 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:51,171 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54037120] [2022-02-23 20:47:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:51,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-02-23 20:47:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-23 20:47:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-23 20:47:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-23 20:47:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-23 20:47:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:47:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:47:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 94 proven. 74 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-23 20:47:51,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:51,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54037120] [2022-02-23 20:47:51,317 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54037120] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:51,317 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516078326] [2022-02-23 20:47:51,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:47:51,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:51,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:51,318 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) [2022-02-23 20:47:51,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-23 20:47:51,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:47:51,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:51,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 18 conjunts are in the unsatisfiable core [2022-02-23 20:47:51,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-23 20:47:51,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 70 proven. 98 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-02-23 20:47:51,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516078326] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:51,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:51,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 29 [2022-02-23 20:47:51,720 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882997100] [2022-02-23 20:47:51,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:51,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-02-23 20:47:51,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-02-23 20:47:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-02-23 20:47:51,721 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 20:47:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:52,358 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2022-02-23 20:47:52,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-23 20:47:52,358 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 88 [2022-02-23 20:47:52,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:52,359 INFO L225 Difference]: With dead ends: 169 [2022-02-23 20:47:52,359 INFO L226 Difference]: Without dead ends: 130 [2022-02-23 20:47:52,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=683, Invalid=3099, Unknown=0, NotChecked=0, Total=3782 [2022-02-23 20:47:52,360 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 200 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:52,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 95 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 20:47:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-02-23 20:47:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 97. [2022-02-23 20:47:52,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 20:47:52,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-02-23 20:47:52,366 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 88 [2022-02-23 20:47:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:52,366 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-02-23 20:47:52,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 27 states have internal predecessors, (99), 17 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 20:47:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-02-23 20:47:52,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-02-23 20:47:52,367 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:52,367 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:52,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:52,579 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,SelfDestructingSolverStorable10 [2022-02-23 20:47:52,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:52,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1909818931, now seen corresponding path program 9 times [2022-02-23 20:47:52,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:52,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557551690] [2022-02-23 20:47:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:52,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-02-23 20:47:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-23 20:47:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-23 20:47:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-23 20:47:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-23 20:47:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:47:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:47:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:47:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 20:47:52,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:52,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557551690] [2022-02-23 20:47:52,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557551690] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:52,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997383789] [2022-02-23 20:47:52,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:47:52,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:52,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:52,774 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) [2022-02-23 20:47:52,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-23 20:47:52,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-02-23 20:47:52,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:52,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 20 conjunts are in the unsatisfiable core [2022-02-23 20:47:52,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 20:47:53,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 144 proven. 72 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 20:47:53,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997383789] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:53,302 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:53,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 32 [2022-02-23 20:47:53,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874652426] [2022-02-23 20:47:53,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:53,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-02-23 20:47:53,303 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-02-23 20:47:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2022-02-23 20:47:53,303 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-23 20:47:53,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:53,694 INFO L93 Difference]: Finished difference Result 178 states and 209 transitions. [2022-02-23 20:47:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-23 20:47:53,694 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 98 [2022-02-23 20:47:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:53,695 INFO L225 Difference]: With dead ends: 178 [2022-02-23 20:47:53,695 INFO L226 Difference]: Without dead ends: 135 [2022-02-23 20:47:53,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=569, Invalid=1881, Unknown=0, NotChecked=0, Total=2450 [2022-02-23 20:47:53,696 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 173 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:53,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 62 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-02-23 20:47:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 99. [2022-02-23 20:47:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 79 states have internal predecessors, (82), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 20:47:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-02-23 20:47:53,701 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 98 [2022-02-23 20:47:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:53,701 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-02-23 20:47:53,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.78125) internal successors, (89), 31 states have internal predecessors, (89), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-02-23 20:47:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-02-23 20:47:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-02-23 20:47:53,702 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:53,702 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:53,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:53,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:53,918 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:53,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2091155440, now seen corresponding path program 10 times [2022-02-23 20:47:53,918 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:53,918 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965824320] [2022-02-23 20:47:53,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:53,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-23 20:47:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-23 20:47:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-23 20:47:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:47:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:47:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:47:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:47:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:47:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 88 proven. 146 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 20:47:54,040 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:54,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965824320] [2022-02-23 20:47:54,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965824320] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:54,040 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850364648] [2022-02-23 20:47:54,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:47:54,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:54,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:54,041 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) [2022-02-23 20:47:54,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-23 20:47:54,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:47:54,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:54,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2022-02-23 20:47:54,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 20:47:54,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 106 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-02-23 20:47:54,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850364648] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:54,390 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:54,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 19 [2022-02-23 20:47:54,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460896102] [2022-02-23 20:47:54,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:54,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-23 20:47:54,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-23 20:47:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-02-23 20:47:54,391 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 20:47:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:54,629 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2022-02-23 20:47:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-23 20:47:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 100 [2022-02-23 20:47:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:54,631 INFO L225 Difference]: With dead ends: 118 [2022-02-23 20:47:54,631 INFO L226 Difference]: Without dead ends: 116 [2022-02-23 20:47:54,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2022-02-23 20:47:54,632 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 80 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:54,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 62 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-23 20:47:54,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-02-23 20:47:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2022-02-23 20:47:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 20:47:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 116 transitions. [2022-02-23 20:47:54,637 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 116 transitions. Word has length 100 [2022-02-23 20:47:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:54,637 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 116 transitions. [2022-02-23 20:47:54,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 16 states have internal predecessors, (81), 11 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-02-23 20:47:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 116 transitions. [2022-02-23 20:47:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-02-23 20:47:54,638 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:54,638 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:54,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:54,847 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,SelfDestructingSolverStorable12 [2022-02-23 20:47:54,847 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -661362408, now seen corresponding path program 11 times [2022-02-23 20:47:54,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:54,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582077237] [2022-02-23 20:47:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:54,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-02-23 20:47:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-23 20:47:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-23 20:47:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:47:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:47:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:47:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:47:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:47:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:47:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:47:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:55,054 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 193 proven. 117 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-23 20:47:55,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:55,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582077237] [2022-02-23 20:47:55,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582077237] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:55,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871251895] [2022-02-23 20:47:55,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:47:55,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:55,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:55,056 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) [2022-02-23 20:47:55,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-23 20:47:55,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-02-23 20:47:55,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:55,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 23 conjunts are in the unsatisfiable core [2022-02-23 20:47:55,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-23 20:47:55,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 220 proven. 90 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-23 20:47:55,663 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871251895] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:55,663 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:55,663 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 39 [2022-02-23 20:47:55,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116378566] [2022-02-23 20:47:55,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:55,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-02-23 20:47:55,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-02-23 20:47:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1140, Unknown=0, NotChecked=0, Total=1482 [2022-02-23 20:47:55,665 INFO L87 Difference]: Start difference. First operand 111 states and 116 transitions. Second operand has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-02-23 20:47:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:56,352 INFO L93 Difference]: Finished difference Result 253 states and 301 transitions. [2022-02-23 20:47:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-23 20:47:56,353 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 116 [2022-02-23 20:47:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:56,355 INFO L225 Difference]: With dead ends: 253 [2022-02-23 20:47:56,355 INFO L226 Difference]: Without dead ends: 159 [2022-02-23 20:47:56,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1163, Invalid=3807, Unknown=0, NotChecked=0, Total=4970 [2022-02-23 20:47:56,356 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 267 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:56,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 64 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 20:47:56,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-02-23 20:47:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2022-02-23 20:47:56,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.043956043956044) internal successors, (95), 92 states have internal predecessors, (95), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 20:47:56,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 120 transitions. [2022-02-23 20:47:56,365 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 120 transitions. Word has length 116 [2022-02-23 20:47:56,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:56,365 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 120 transitions. [2022-02-23 20:47:56,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-02-23 20:47:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 120 transitions. [2022-02-23 20:47:56,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-23 20:47:56,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:56,366 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:56,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:56,571 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,SelfDestructingSolverStorable13 [2022-02-23 20:47:56,571 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash 893969182, now seen corresponding path program 12 times [2022-02-23 20:47:56,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:56,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935331584] [2022-02-23 20:47:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:56,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-23 20:47:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-23 20:47:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-23 20:47:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-23 20:47:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:47:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:47:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:47:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:47:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:47:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:47:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-23 20:47:56,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:56,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935331584] [2022-02-23 20:47:56,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935331584] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:56,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339264045] [2022-02-23 20:47:56,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:47:56,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:56,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:56,737 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) [2022-02-23 20:47:56,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-23 20:47:56,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-02-23 20:47:56,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:56,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 25 conjunts are in the unsatisfiable core [2022-02-23 20:47:56,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-23 20:47:56,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-02-23 20:47:57,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339264045] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:57,161 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:57,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 21 [2022-02-23 20:47:57,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694302442] [2022-02-23 20:47:57,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:57,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-23 20:47:57,161 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-23 20:47:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-02-23 20:47:57,162 INFO L87 Difference]: Start difference. First operand 115 states and 120 transitions. Second operand has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 20:47:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:57,447 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2022-02-23 20:47:57,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-23 20:47:57,447 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 120 [2022-02-23 20:47:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:57,448 INFO L225 Difference]: With dead ends: 134 [2022-02-23 20:47:57,448 INFO L226 Difference]: Without dead ends: 132 [2022-02-23 20:47:57,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=1051, Unknown=0, NotChecked=0, Total=1406 [2022-02-23 20:47:57,449 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 90 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:57,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 74 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:47:57,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-02-23 20:47:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-02-23 20:47:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 100 states have (on average 1.04) internal successors, (104), 101 states have internal predecessors, (104), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 20:47:57,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 133 transitions. [2022-02-23 20:47:57,454 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 133 transitions. Word has length 120 [2022-02-23 20:47:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:57,454 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 133 transitions. [2022-02-23 20:47:57,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.333333333333333) internal successors, (91), 18 states have internal predecessors, (91), 13 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-02-23 20:47:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 133 transitions. [2022-02-23 20:47:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-02-23 20:47:57,455 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:57,455 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:57,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:57,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-23 20:47:57,671 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash -124211130, now seen corresponding path program 13 times [2022-02-23 20:47:57,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:57,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152169019] [2022-02-23 20:47:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:57,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-02-23 20:47:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-23 20:47:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-23 20:47:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-23 20:47:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:47:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:47:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:47:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:47:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:47:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:47:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:47:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:47:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-23 20:47:57,957 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:57,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152169019] [2022-02-23 20:47:57,957 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152169019] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:57,957 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692093962] [2022-02-23 20:47:57,957 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:47:57,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:57,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:57,958 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:47:57,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-23 20:47:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:58,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 26 conjunts are in the unsatisfiable core [2022-02-23 20:47:58,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:47:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-02-23 20:47:58,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:47:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-02-23 20:47:58,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692093962] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:47:58,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:47:58,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 26] total 42 [2022-02-23 20:47:58,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961703256] [2022-02-23 20:47:58,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:47:58,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-02-23 20:47:58,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:47:58,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-02-23 20:47:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2022-02-23 20:47:58,642 INFO L87 Difference]: Start difference. First operand 127 states and 133 transitions. Second operand has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-02-23 20:47:59,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:47:59,172 INFO L93 Difference]: Finished difference Result 238 states and 280 transitions. [2022-02-23 20:47:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-23 20:47:59,173 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) Word has length 136 [2022-02-23 20:47:59,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:47:59,174 INFO L225 Difference]: With dead ends: 238 [2022-02-23 20:47:59,174 INFO L226 Difference]: Without dead ends: 177 [2022-02-23 20:47:59,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=967, Invalid=3323, Unknown=0, NotChecked=0, Total=4290 [2022-02-23 20:47:59,175 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 229 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:47:59,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 68 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 20:47:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-02-23 20:47:59,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 129. [2022-02-23 20:47:59,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 102 states have (on average 1.0392156862745099) internal successors, (106), 103 states have internal predecessors, (106), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-02-23 20:47:59,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2022-02-23 20:47:59,185 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 136 [2022-02-23 20:47:59,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:47:59,185 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2022-02-23 20:47:59,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.880952380952381) internal successors, (121), 41 states have internal predecessors, (121), 26 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2022-02-23 20:47:59,186 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2022-02-23 20:47:59,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-02-23 20:47:59,187 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:47:59,187 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:47:59,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-23 20:47:59,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-23 20:47:59,395 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:47:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:47:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1132461015, now seen corresponding path program 14 times [2022-02-23 20:47:59,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:47:59,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702541332] [2022-02-23 20:47:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:47:59,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:47:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:47:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-02-23 20:47:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-23 20:47:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-23 20:47:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-23 20:47:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:47:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:47:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:47:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:47:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:47:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:47:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:47:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:47:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:47:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-23 20:47:59,687 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:47:59,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702541332] [2022-02-23 20:47:59,687 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702541332] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:47:59,687 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601300652] [2022-02-23 20:47:59,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:47:59,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:47:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:47:59,688 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:47:59,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-23 20:47:59,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:47:59,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:47:59,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 28 conjunts are in the unsatisfiable core [2022-02-23 20:47:59,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-23 20:48:00,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-02-23 20:48:00,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601300652] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:00,293 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:00,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17, 17] total 44 [2022-02-23 20:48:00,293 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531417048] [2022-02-23 20:48:00,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:00,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-02-23 20:48:00,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:00,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-02-23 20:48:00,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2022-02-23 20:48:00,295 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-23 20:48:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:01,450 INFO L93 Difference]: Finished difference Result 251 states and 297 transitions. [2022-02-23 20:48:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-23 20:48:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 138 [2022-02-23 20:48:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:01,452 INFO L225 Difference]: With dead ends: 251 [2022-02-23 20:48:01,452 INFO L226 Difference]: Without dead ends: 192 [2022-02-23 20:48:01,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1623, Invalid=7689, Unknown=0, NotChecked=0, Total=9312 [2022-02-23 20:48:01,454 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 349 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:01,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 120 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 20:48:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-02-23 20:48:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 139. [2022-02-23 20:48:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 111 states have internal predecessors, (114), 16 states have call successors, (16), 13 states have call predecessors, (16), 12 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-02-23 20:48:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2022-02-23 20:48:01,460 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 138 [2022-02-23 20:48:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:01,461 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2022-02-23 20:48:01,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 42 states have internal predecessors, (149), 27 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-23 20:48:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2022-02-23 20:48:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-02-23 20:48:01,461 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:01,462 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:01,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-02-23 20:48:01,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:01,662 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1762808352, now seen corresponding path program 15 times [2022-02-23 20:48:01,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:01,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008487471] [2022-02-23 20:48:01,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:01,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-02-23 20:48:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-23 20:48:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:48:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:48:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:48:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:48:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:48:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:48:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:48:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:48:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:48:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:48:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:48:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-02-23 20:48:01,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:01,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008487471] [2022-02-23 20:48:01,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008487471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:01,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265512148] [2022-02-23 20:48:01,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:48:01,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:01,948 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:01,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-23 20:48:02,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-02-23 20:48:02,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:02,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 30 conjunts are in the unsatisfiable core [2022-02-23 20:48:02,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:02,430 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-02-23 20:48:02,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-02-23 20:48:02,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265512148] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:02,662 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:02,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 18, 18] total 47 [2022-02-23 20:48:02,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606332441] [2022-02-23 20:48:02,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:02,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-02-23 20:48:02,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-02-23 20:48:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2022-02-23 20:48:02,664 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-23 20:48:03,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:03,880 INFO L93 Difference]: Finished difference Result 269 states and 318 transitions. [2022-02-23 20:48:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-23 20:48:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 148 [2022-02-23 20:48:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:03,882 INFO L225 Difference]: With dead ends: 269 [2022-02-23 20:48:03,882 INFO L226 Difference]: Without dead ends: 206 [2022-02-23 20:48:03,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3391 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1859, Invalid=8853, Unknown=0, NotChecked=0, Total=10712 [2022-02-23 20:48:03,885 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 454 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:03,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 123 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 20:48:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-23 20:48:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2022-02-23 20:48:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 118 states have (on average 1.0338983050847457) internal successors, (122), 119 states have internal predecessors, (122), 17 states have call successors, (17), 14 states have call predecessors, (17), 13 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-02-23 20:48:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2022-02-23 20:48:03,892 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 148 [2022-02-23 20:48:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:03,893 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2022-02-23 20:48:03,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.382978723404255) internal successors, (159), 45 states have internal predecessors, (159), 29 states have call successors, (31), 4 states have call predecessors, (31), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-23 20:48:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2022-02-23 20:48:03,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-02-23 20:48:03,893 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:03,894 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:03,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-02-23 20:48:04,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-23 20:48:04,099 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:04,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash -263642921, now seen corresponding path program 16 times [2022-02-23 20:48:04,100 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:04,100 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856991038] [2022-02-23 20:48:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:04,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-02-23 20:48:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-23 20:48:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-23 20:48:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-23 20:48:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:48:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:48:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:48:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:48:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:48:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:48:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:48:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:48:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:48:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:48:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-02-23 20:48:04,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:04,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856991038] [2022-02-23 20:48:04,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856991038] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:04,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590807384] [2022-02-23 20:48:04,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:48:04,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:04,403 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:04,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-23 20:48:04,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:48:04,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:04,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 32 conjunts are in the unsatisfiable core [2022-02-23 20:48:04,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-02-23 20:48:04,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 238 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-02-23 20:48:05,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590807384] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:05,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:05,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19, 19] total 50 [2022-02-23 20:48:05,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013036789] [2022-02-23 20:48:05,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:05,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-02-23 20:48:05,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-02-23 20:48:05,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=398, Invalid=2052, Unknown=0, NotChecked=0, Total=2450 [2022-02-23 20:48:05,127 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-23 20:48:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:06,521 INFO L93 Difference]: Finished difference Result 287 states and 339 transitions. [2022-02-23 20:48:06,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-23 20:48:06,522 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 158 [2022-02-23 20:48:06,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:06,523 INFO L225 Difference]: With dead ends: 287 [2022-02-23 20:48:06,523 INFO L226 Difference]: Without dead ends: 220 [2022-02-23 20:48:06,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 345 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3904 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2111, Invalid=10099, Unknown=0, NotChecked=0, Total=12210 [2022-02-23 20:48:06,525 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 451 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:06,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 121 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-23 20:48:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-02-23 20:48:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 159. [2022-02-23 20:48:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 127 states have internal predecessors, (130), 18 states have call successors, (18), 15 states have call predecessors, (18), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 20:48:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2022-02-23 20:48:06,533 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 158 [2022-02-23 20:48:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:06,533 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2022-02-23 20:48:06,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.38) internal successors, (169), 48 states have internal predecessors, (169), 31 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-23 20:48:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2022-02-23 20:48:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-02-23 20:48:06,534 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:06,534 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:06,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:06,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:06,735 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash -243938034, now seen corresponding path program 17 times [2022-02-23 20:48:06,735 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:06,735 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373038626] [2022-02-23 20:48:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-02-23 20:48:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-23 20:48:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-23 20:48:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:48:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:48:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:48:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:48:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:48:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:48:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:48:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:48:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:48:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:48:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:48:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:48:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 438 proven. 282 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-23 20:48:07,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:07,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373038626] [2022-02-23 20:48:07,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373038626] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:07,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762920728] [2022-02-23 20:48:07,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:48:07,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:07,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:07,083 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:07,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-23 20:48:07,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-02-23 20:48:07,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:07,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 34 conjunts are in the unsatisfiable core [2022-02-23 20:48:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:07,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-23 20:48:07,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 480 proven. 240 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-23 20:48:08,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762920728] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:08,013 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:08,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 53 [2022-02-23 20:48:08,013 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95349853] [2022-02-23 20:48:08,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:08,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-02-23 20:48:08,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-02-23 20:48:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=2139, Unknown=0, NotChecked=0, Total=2756 [2022-02-23 20:48:08,015 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 20:48:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:08,733 INFO L93 Difference]: Finished difference Result 296 states and 350 transitions. [2022-02-23 20:48:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-23 20:48:08,733 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 168 [2022-02-23 20:48:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:08,734 INFO L225 Difference]: With dead ends: 296 [2022-02-23 20:48:08,734 INFO L226 Difference]: Without dead ends: 225 [2022-02-23 20:48:08,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1619, Invalid=5521, Unknown=0, NotChecked=0, Total=7140 [2022-02-23 20:48:08,736 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 294 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:08,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 91 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 20:48:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-02-23 20:48:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 161. [2022-02-23 20:48:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 128 states have (on average 1.03125) internal successors, (132), 129 states have internal predecessors, (132), 18 states have call successors, (18), 15 states have call predecessors, (18), 14 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 20:48:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2022-02-23 20:48:08,748 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 168 [2022-02-23 20:48:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:08,748 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2022-02-23 20:48:08,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 52 states have internal predecessors, (145), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 20:48:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2022-02-23 20:48:08,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-02-23 20:48:08,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:08,750 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:08,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:08,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:08,968 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash -509815567, now seen corresponding path program 18 times [2022-02-23 20:48:08,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:08,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114190482] [2022-02-23 20:48:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:08,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:09,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-23 20:48:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-23 20:48:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-23 20:48:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:48:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:48:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:48:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:48:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:48:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:48:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:48:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:48:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:48:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:48:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:48:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:48:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 270 proven. 482 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-23 20:48:09,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:09,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114190482] [2022-02-23 20:48:09,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114190482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:09,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490134261] [2022-02-23 20:48:09,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:48:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:09,169 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:09,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-23 20:48:09,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-02-23 20:48:09,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:09,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 35 conjunts are in the unsatisfiable core [2022-02-23 20:48:09,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-23 20:48:09,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1172 backedges. 302 proven. 450 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-02-23 20:48:09,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490134261] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:09,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:09,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 26 [2022-02-23 20:48:09,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934003679] [2022-02-23 20:48:09,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:09,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-02-23 20:48:09,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-02-23 20:48:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2022-02-23 20:48:09,696 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 20:48:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:10,064 INFO L93 Difference]: Finished difference Result 180 states and 188 transitions. [2022-02-23 20:48:10,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-23 20:48:10,065 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 170 [2022-02-23 20:48:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:10,066 INFO L225 Difference]: With dead ends: 180 [2022-02-23 20:48:10,066 INFO L226 Difference]: Without dead ends: 178 [2022-02-23 20:48:10,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=610, Invalid=1646, Unknown=0, NotChecked=0, Total=2256 [2022-02-23 20:48:10,067 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 113 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:10,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 64 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 20:48:10,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-02-23 20:48:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 173. [2022-02-23 20:48:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 137 states have (on average 1.0291970802919708) internal successors, (141), 138 states have internal predecessors, (141), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-02-23 20:48:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2022-02-23 20:48:10,074 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 170 [2022-02-23 20:48:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:10,074 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2022-02-23 20:48:10,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.461538461538462) internal successors, (116), 23 states have internal predecessors, (116), 18 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-02-23 20:48:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2022-02-23 20:48:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-02-23 20:48:10,075 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:10,075 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:10,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:10,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:10,291 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:10,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash 82615321, now seen corresponding path program 19 times [2022-02-23 20:48:10,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:10,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465094281] [2022-02-23 20:48:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-02-23 20:48:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-23 20:48:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-23 20:48:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:48:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:48:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:48:10,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:48:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:48:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:48:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:48:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:48:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:48:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:48:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:48:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:48:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:48:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:48:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 564 proven. 320 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-02-23 20:48:10,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:10,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465094281] [2022-02-23 20:48:10,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465094281] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:10,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142983075] [2022-02-23 20:48:10,724 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:48:10,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:10,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:10,725 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:10,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-23 20:48:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:10,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 36 conjunts are in the unsatisfiable core [2022-02-23 20:48:10,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 672 proven. 272 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-02-23 20:48:11,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 610 proven. 272 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2022-02-23 20:48:11,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142983075] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:11,768 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:11,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 36, 36] total 57 [2022-02-23 20:48:11,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748814481] [2022-02-23 20:48:11,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:11,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-02-23 20:48:11,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-02-23 20:48:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=2484, Unknown=0, NotChecked=0, Total=3192 [2022-02-23 20:48:11,770 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2022-02-23 20:48:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:12,583 INFO L93 Difference]: Finished difference Result 324 states and 382 transitions. [2022-02-23 20:48:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-23 20:48:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) Word has length 186 [2022-02-23 20:48:12,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:12,587 INFO L225 Difference]: With dead ends: 324 [2022-02-23 20:48:12,587 INFO L226 Difference]: Without dead ends: 243 [2022-02-23 20:48:12,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2176 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1832, Invalid=6358, Unknown=0, NotChecked=0, Total=8190 [2022-02-23 20:48:12,588 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 298 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:12,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 108 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 20:48:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-02-23 20:48:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 175. [2022-02-23 20:48:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.0287769784172662) internal successors, (143), 140 states have internal predecessors, (143), 20 states have call successors, (20), 16 states have call predecessors, (20), 15 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-02-23 20:48:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2022-02-23 20:48:12,606 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 186 [2022-02-23 20:48:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:12,606 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2022-02-23 20:48:12,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.824561403508772) internal successors, (161), 56 states have internal predecessors, (161), 36 states have call successors, (39), 3 states have call predecessors, (39), 2 states have return successors, (37), 36 states have call predecessors, (37), 36 states have call successors, (37) [2022-02-23 20:48:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2022-02-23 20:48:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-02-23 20:48:12,607 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:12,607 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:12,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-23 20:48:12,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:12,819 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:12,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash -535523012, now seen corresponding path program 20 times [2022-02-23 20:48:12,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:12,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446852686] [2022-02-23 20:48:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-02-23 20:48:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:48:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:48:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:48:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:48:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:48:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:48:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:48:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:48:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:48:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:48:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:48:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:48:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:48:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:48:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:48:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:48:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:13,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 564 proven. 354 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-02-23 20:48:13,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:13,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446852686] [2022-02-23 20:48:13,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446852686] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:13,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972784995] [2022-02-23 20:48:13,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:48:13,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:13,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:13,241 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:13,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-23 20:48:13,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:48:13,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:13,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 38 conjunts are in the unsatisfiable core [2022-02-23 20:48:13,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-02-23 20:48:13,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1462 backedges. 340 proven. 578 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-02-23 20:48:14,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972784995] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:14,107 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:14,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 22, 22] total 59 [2022-02-23 20:48:14,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86545230] [2022-02-23 20:48:14,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:14,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-02-23 20:48:14,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:14,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-02-23 20:48:14,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=2865, Unknown=0, NotChecked=0, Total=3422 [2022-02-23 20:48:14,109 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-02-23 20:48:15,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:15,746 INFO L93 Difference]: Finished difference Result 337 states and 399 transitions. [2022-02-23 20:48:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-23 20:48:15,747 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 188 [2022-02-23 20:48:15,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:15,748 INFO L225 Difference]: With dead ends: 337 [2022-02-23 20:48:15,748 INFO L226 Difference]: Without dead ends: 258 [2022-02-23 20:48:15,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 411 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5659 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2963, Invalid=14329, Unknown=0, NotChecked=0, Total=17292 [2022-02-23 20:48:15,750 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 514 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:15,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 145 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-23 20:48:15,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-02-23 20:48:15,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 185. [2022-02-23 20:48:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.0272108843537415) internal successors, (151), 148 states have internal predecessors, (151), 21 states have call successors, (21), 17 states have call predecessors, (21), 16 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-02-23 20:48:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 192 transitions. [2022-02-23 20:48:15,759 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 192 transitions. Word has length 188 [2022-02-23 20:48:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:15,759 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 192 transitions. [2022-02-23 20:48:15,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.3728813559322033) internal successors, (199), 57 states have internal predecessors, (199), 37 states have call successors, (39), 4 states have call predecessors, (39), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-02-23 20:48:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 192 transitions. [2022-02-23 20:48:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-02-23 20:48:15,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:15,760 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:15,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-02-23 20:48:15,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-02-23 20:48:15,967 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:15,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1382971085, now seen corresponding path program 21 times [2022-02-23 20:48:15,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:15,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065210442] [2022-02-23 20:48:15,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-02-23 20:48:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-23 20:48:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-23 20:48:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:48:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:48:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:48:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:48:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:48:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:48:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:48:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:48:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:48:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:48:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:48:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:48:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:48:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:48:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:48:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-02-23 20:48:16,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:16,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065210442] [2022-02-23 20:48:16,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065210442] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:16,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956178595] [2022-02-23 20:48:16,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:48:16,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:16,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:16,423 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:16,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-23 20:48:16,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-02-23 20:48:16,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:16,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 40 conjunts are in the unsatisfiable core [2022-02-23 20:48:16,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-02-23 20:48:17,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-02-23 20:48:17,368 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956178595] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:17,368 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:17,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 23, 23] total 62 [2022-02-23 20:48:17,368 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213137227] [2022-02-23 20:48:17,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:17,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-02-23 20:48:17,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-02-23 20:48:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=616, Invalid=3166, Unknown=0, NotChecked=0, Total=3782 [2022-02-23 20:48:17,370 INFO L87 Difference]: Start difference. First operand 185 states and 192 transitions. Second operand has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-23 20:48:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:19,189 INFO L93 Difference]: Finished difference Result 355 states and 420 transitions. [2022-02-23 20:48:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-23 20:48:19,190 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 198 [2022-02-23 20:48:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:19,191 INFO L225 Difference]: With dead ends: 355 [2022-02-23 20:48:19,191 INFO L226 Difference]: Without dead ends: 272 [2022-02-23 20:48:19,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 433 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6316 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3279, Invalid=15903, Unknown=0, NotChecked=0, Total=19182 [2022-02-23 20:48:19,194 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 563 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:19,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 158 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-23 20:48:19,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-02-23 20:48:19,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 195. [2022-02-23 20:48:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 155 states have (on average 1.0258064516129033) internal successors, (159), 156 states have internal predecessors, (159), 22 states have call successors, (22), 18 states have call predecessors, (22), 17 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-02-23 20:48:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2022-02-23 20:48:19,203 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 198 [2022-02-23 20:48:19,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:19,203 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 202 transitions. [2022-02-23 20:48:19,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.370967741935484) internal successors, (209), 60 states have internal predecessors, (209), 39 states have call successors, (41), 4 states have call predecessors, (41), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-23 20:48:19,204 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 202 transitions. [2022-02-23 20:48:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-02-23 20:48:19,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:19,204 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:19,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-23 20:48:19,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-23 20:48:19,407 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1594525078, now seen corresponding path program 22 times [2022-02-23 20:48:19,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:19,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594286405] [2022-02-23 20:48:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-02-23 20:48:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-23 20:48:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:48:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:48:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:48:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:48:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:48:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:48:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:48:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:48:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:48:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:48:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:48:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:48:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:48:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:48:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:48:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:48:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:48:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-02-23 20:48:19,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:19,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594286405] [2022-02-23 20:48:19,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594286405] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:19,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970690337] [2022-02-23 20:48:19,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:48:19,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:19,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:19,939 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:19,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-23 20:48:20,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:48:20,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:20,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 42 conjunts are in the unsatisfiable core [2022-02-23 20:48:20,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-02-23 20:48:20,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-02-23 20:48:20,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970690337] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:20,918 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:20,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 24, 24] total 65 [2022-02-23 20:48:20,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712001163] [2022-02-23 20:48:20,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:20,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-02-23 20:48:20,919 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-02-23 20:48:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=3482, Unknown=0, NotChecked=0, Total=4160 [2022-02-23 20:48:20,920 INFO L87 Difference]: Start difference. First operand 195 states and 202 transitions. Second operand has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-02-23 20:48:22,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:22,844 INFO L93 Difference]: Finished difference Result 373 states and 441 transitions. [2022-02-23 20:48:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-23 20:48:22,845 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 208 [2022-02-23 20:48:22,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:22,846 INFO L225 Difference]: With dead ends: 373 [2022-02-23 20:48:22,846 INFO L226 Difference]: Without dead ends: 286 [2022-02-23 20:48:22,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 455 SyntacticMatches, 1 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7009 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3611, Invalid=17559, Unknown=0, NotChecked=0, Total=21170 [2022-02-23 20:48:22,848 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 662 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:22,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 151 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 20:48:22,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-02-23 20:48:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 205. [2022-02-23 20:48:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 163 states have (on average 1.0245398773006136) internal successors, (167), 164 states have internal predecessors, (167), 23 states have call successors, (23), 19 states have call predecessors, (23), 18 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-02-23 20:48:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 212 transitions. [2022-02-23 20:48:22,865 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 212 transitions. Word has length 208 [2022-02-23 20:48:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:22,865 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 212 transitions. [2022-02-23 20:48:22,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.3692307692307693) internal successors, (219), 63 states have internal predecessors, (219), 41 states have call successors, (43), 4 states have call predecessors, (43), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-02-23 20:48:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 212 transitions. [2022-02-23 20:48:22,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-02-23 20:48:22,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:22,868 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:22,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:23,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:23,079 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:23,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1419258655, now seen corresponding path program 23 times [2022-02-23 20:48:23,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:23,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337412899] [2022-02-23 20:48:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:23,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-02-23 20:48:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-23 20:48:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:48:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:48:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:48:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:48:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:48:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:48:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:48:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:48:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:48:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:48:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:48:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:48:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:48:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:48:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:48:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:48:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:48:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:48:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-23 20:48:23,632 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:23,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337412899] [2022-02-23 20:48:23,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337412899] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:23,632 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249370674] [2022-02-23 20:48:23,632 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:48:23,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:23,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:23,633 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:23,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-23 20:48:23,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2022-02-23 20:48:23,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:23,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 44 conjunts are in the unsatisfiable core [2022-02-23 20:48:23,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-23 20:48:24,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-23 20:48:24,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249370674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:24,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:24,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 68 [2022-02-23 20:48:24,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605012436] [2022-02-23 20:48:24,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:24,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-02-23 20:48:24,929 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-02-23 20:48:24,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1017, Invalid=3539, Unknown=0, NotChecked=0, Total=4556 [2022-02-23 20:48:24,930 INFO L87 Difference]: Start difference. First operand 205 states and 212 transitions. Second operand has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-02-23 20:48:25,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:25,976 INFO L93 Difference]: Finished difference Result 382 states and 452 transitions. [2022-02-23 20:48:25,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-23 20:48:25,976 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 218 [2022-02-23 20:48:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:25,977 INFO L225 Difference]: With dead ends: 382 [2022-02-23 20:48:25,977 INFO L226 Difference]: Without dead ends: 291 [2022-02-23 20:48:25,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3195 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2699, Invalid=9291, Unknown=0, NotChecked=0, Total=11990 [2022-02-23 20:48:25,978 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 383 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:25,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 121 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-23 20:48:25,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-02-23 20:48:25,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 207. [2022-02-23 20:48:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 165 states have (on average 1.0242424242424242) internal successors, (169), 166 states have internal predecessors, (169), 23 states have call successors, (23), 19 states have call predecessors, (23), 18 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-02-23 20:48:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 214 transitions. [2022-02-23 20:48:25,988 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 214 transitions. Word has length 218 [2022-02-23 20:48:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:25,988 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 214 transitions. [2022-02-23 20:48:25,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.7205882352941178) internal successors, (185), 67 states have internal predecessors, (185), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-02-23 20:48:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 214 transitions. [2022-02-23 20:48:25,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-02-23 20:48:25,989 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:25,989 INFO L514 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:26,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:26,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:26,204 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash -705004028, now seen corresponding path program 24 times [2022-02-23 20:48:26,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:26,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250876557] [2022-02-23 20:48:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:48:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:48:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:48:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:48:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:48:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:48:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:48:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:48:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:48:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:48:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:48:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:48:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:48:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:48:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:48:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:48:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:48:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:48:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:48:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:48:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-23 20:48:26,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:26,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250876557] [2022-02-23 20:48:26,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250876557] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:26,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34215144] [2022-02-23 20:48:26,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:48:26,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:26,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:26,517 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:26,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-23 20:48:26,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2022-02-23 20:48:26,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:26,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 45 conjunts are in the unsatisfiable core [2022-02-23 20:48:26,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-23 20:48:26,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-02-23 20:48:27,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34215144] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:27,202 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:27,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 31 [2022-02-23 20:48:27,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187652541] [2022-02-23 20:48:27,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:27,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-02-23 20:48:27,203 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:27,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-02-23 20:48:27,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=614, Unknown=0, NotChecked=0, Total=930 [2022-02-23 20:48:27,203 INFO L87 Difference]: Start difference. First operand 207 states and 214 transitions. Second operand has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-02-23 20:48:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:27,666 INFO L93 Difference]: Finished difference Result 226 states and 235 transitions. [2022-02-23 20:48:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-23 20:48:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 220 [2022-02-23 20:48:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:27,668 INFO L225 Difference]: With dead ends: 226 [2022-02-23 20:48:27,668 INFO L226 Difference]: Without dead ends: 224 [2022-02-23 20:48:27,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=940, Invalid=2366, Unknown=0, NotChecked=0, Total=3306 [2022-02-23 20:48:27,669 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 131 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:27,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 74 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 20:48:27,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-23 20:48:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2022-02-23 20:48:27,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 174 states have (on average 1.0229885057471264) internal successors, (178), 175 states have internal predecessors, (178), 25 states have call successors, (25), 20 states have call predecessors, (25), 19 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-23 20:48:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2022-02-23 20:48:27,678 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 220 [2022-02-23 20:48:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:27,679 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2022-02-23 20:48:27,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.548387096774194) internal successors, (141), 28 states have internal predecessors, (141), 23 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-02-23 20:48:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2022-02-23 20:48:27,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-02-23 20:48:27,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:27,680 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:27,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:27,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-02-23 20:48:27,895 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1082933460, now seen corresponding path program 25 times [2022-02-23 20:48:27,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:27,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398344033] [2022-02-23 20:48:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:27,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-02-23 20:48:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:48:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:48:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:48:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:48:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:48:28,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:48:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:48:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:48:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:48:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:48:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:48:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:48:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:48:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:48:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:48:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:48:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:48:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:48:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:48:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:48:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:48:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-02-23 20:48:28,488 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:28,488 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398344033] [2022-02-23 20:48:28,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398344033] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:28,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856438662] [2022-02-23 20:48:28,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:48:28,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:28,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:28,490 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:28,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-23 20:48:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:28,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 46 conjunts are in the unsatisfiable core [2022-02-23 20:48:28,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2022-02-23 20:48:29,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-02-23 20:48:29,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856438662] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:29,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:29,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 46, 46] total 72 [2022-02-23 20:48:29,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293765353] [2022-02-23 20:48:29,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:29,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-02-23 20:48:29,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-02-23 20:48:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=3979, Unknown=0, NotChecked=0, Total=5112 [2022-02-23 20:48:29,837 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-02-23 20:48:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:30,973 INFO L93 Difference]: Finished difference Result 410 states and 484 transitions. [2022-02-23 20:48:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-23 20:48:30,973 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) Word has length 236 [2022-02-23 20:48:30,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:30,974 INFO L225 Difference]: With dead ends: 410 [2022-02-23 20:48:30,974 INFO L226 Difference]: Without dead ends: 309 [2022-02-23 20:48:30,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3591 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2972, Invalid=10368, Unknown=0, NotChecked=0, Total=13340 [2022-02-23 20:48:30,976 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 536 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:30,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 113 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-23 20:48:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-02-23 20:48:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 221. [2022-02-23 20:48:30,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 176 states have (on average 1.0227272727272727) internal successors, (180), 177 states have internal predecessors, (180), 25 states have call successors, (25), 20 states have call predecessors, (25), 19 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-02-23 20:48:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions. [2022-02-23 20:48:30,986 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 236 [2022-02-23 20:48:30,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:30,986 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 229 transitions. [2022-02-23 20:48:30,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.7916666666666665) internal successors, (201), 71 states have internal predecessors, (201), 46 states have call successors, (49), 3 states have call predecessors, (49), 2 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-02-23 20:48:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 229 transitions. [2022-02-23 20:48:30,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-02-23 20:48:30,987 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:30,988 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:31,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:31,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-23 20:48:31,203 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:31,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1034320497, now seen corresponding path program 26 times [2022-02-23 20:48:31,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:31,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628198443] [2022-02-23 20:48:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:31,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-02-23 20:48:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-23 20:48:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:48:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:48:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:48:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:48:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:48:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:48:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:48:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:48:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:48:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:48:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:48:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:48:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:48:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:48:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:48:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:48:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:48:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:48:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:48:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:48:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-02-23 20:48:31,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:31,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628198443] [2022-02-23 20:48:31,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628198443] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:31,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621217947] [2022-02-23 20:48:31,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:48:31,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:31,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:31,862 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:31,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-23 20:48:31,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:48:31,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:31,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 48 conjunts are in the unsatisfiable core [2022-02-23 20:48:31,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:32,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-02-23 20:48:32,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-02-23 20:48:33,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621217947] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:33,032 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:33,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 27, 27] total 74 [2022-02-23 20:48:33,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440533369] [2022-02-23 20:48:33,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:33,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-02-23 20:48:33,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-02-23 20:48:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=882, Invalid=4520, Unknown=0, NotChecked=0, Total=5402 [2022-02-23 20:48:33,034 INFO L87 Difference]: Start difference. First operand 221 states and 229 transitions. Second operand has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-02-23 20:48:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:35,375 INFO L93 Difference]: Finished difference Result 423 states and 501 transitions. [2022-02-23 20:48:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-23 20:48:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 238 [2022-02-23 20:48:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:35,376 INFO L225 Difference]: With dead ends: 423 [2022-02-23 20:48:35,376 INFO L226 Difference]: Without dead ends: 324 [2022-02-23 20:48:35,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 521 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9304 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4703, Invalid=23019, Unknown=0, NotChecked=0, Total=27722 [2022-02-23 20:48:35,379 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 751 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3123 mSolverCounterSat, 575 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 3123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:35,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 175 Invalid, 3698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 3123 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-23 20:48:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-02-23 20:48:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 231. [2022-02-23 20:48:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 184 states have (on average 1.0217391304347827) internal successors, (188), 185 states have internal predecessors, (188), 26 states have call successors, (26), 21 states have call predecessors, (26), 20 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-02-23 20:48:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 239 transitions. [2022-02-23 20:48:35,390 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 239 transitions. Word has length 238 [2022-02-23 20:48:35,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:35,390 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 239 transitions. [2022-02-23 20:48:35,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 3.364864864864865) internal successors, (249), 72 states have internal predecessors, (249), 47 states have call successors, (49), 4 states have call predecessors, (49), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-02-23 20:48:35,391 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 239 transitions. [2022-02-23 20:48:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-02-23 20:48:35,392 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:35,392 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:35,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:35,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-23 20:48:35,603 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:35,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:35,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1502889018, now seen corresponding path program 27 times [2022-02-23 20:48:35,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:35,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257769354] [2022-02-23 20:48:35,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:35,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-02-23 20:48:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:48:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:48:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:48:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:48:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:48:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:48:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:48:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:48:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:48:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:48:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:48:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:48:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:48:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:48:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:48:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:48:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:48:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:48:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:48:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:48:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:48:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:48:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-02-23 20:48:36,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:36,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257769354] [2022-02-23 20:48:36,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257769354] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:36,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9561889] [2022-02-23 20:48:36,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:48:36,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:36,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:36,256 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:36,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-23 20:48:36,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-02-23 20:48:36,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:36,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 50 conjunts are in the unsatisfiable core [2022-02-23 20:48:36,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-02-23 20:48:37,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2022-02-23 20:48:37,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9561889] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:37,535 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:37,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 28, 28] total 77 [2022-02-23 20:48:37,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772011741] [2022-02-23 20:48:37,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:37,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-02-23 20:48:37,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:37,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-02-23 20:48:37,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=4896, Unknown=0, NotChecked=0, Total=5852 [2022-02-23 20:48:37,537 INFO L87 Difference]: Start difference. First operand 231 states and 239 transitions. Second operand has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-02-23 20:48:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:39,959 INFO L93 Difference]: Finished difference Result 441 states and 522 transitions. [2022-02-23 20:48:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-23 20:48:39,959 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 248 [2022-02-23 20:48:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:39,960 INFO L225 Difference]: With dead ends: 441 [2022-02-23 20:48:39,960 INFO L226 Difference]: Without dead ends: 338 [2022-02-23 20:48:39,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 543 SyntacticMatches, 1 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10141 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5099, Invalid=25003, Unknown=0, NotChecked=0, Total=30102 [2022-02-23 20:48:39,963 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 706 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:39,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 153 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-23 20:48:39,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-02-23 20:48:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 241. [2022-02-23 20:48:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 192 states have (on average 1.0208333333333333) internal successors, (196), 193 states have internal predecessors, (196), 27 states have call successors, (27), 22 states have call predecessors, (27), 21 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-02-23 20:48:39,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 249 transitions. [2022-02-23 20:48:39,976 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 249 transitions. Word has length 248 [2022-02-23 20:48:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:39,976 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 249 transitions. [2022-02-23 20:48:39,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.3636363636363638) internal successors, (259), 75 states have internal predecessors, (259), 49 states have call successors, (51), 4 states have call predecessors, (51), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-02-23 20:48:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 249 transitions. [2022-02-23 20:48:39,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-02-23 20:48:39,977 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:39,977 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:39,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:40,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:40,192 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:40,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1900930243, now seen corresponding path program 28 times [2022-02-23 20:48:40,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:40,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212115556] [2022-02-23 20:48:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:40,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-02-23 20:48:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:48:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:48:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:48:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:48:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:48:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:48:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:48:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:48:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:48:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:48:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:48:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:48:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:48:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:48:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:48:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:48:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:48:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:48:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:48:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:48:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:48:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:48:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:48:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-02-23 20:48:40,884 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:40,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212115556] [2022-02-23 20:48:40,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212115556] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:40,884 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219116619] [2022-02-23 20:48:40,884 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:48:40,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:40,885 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:40,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-23 20:48:40,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:48:40,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:40,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 52 conjunts are in the unsatisfiable core [2022-02-23 20:48:40,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-02-23 20:48:41,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 648 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2022-02-23 20:48:42,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219116619] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:42,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:42,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 29, 29] total 80 [2022-02-23 20:48:42,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014313524] [2022-02-23 20:48:42,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:42,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-02-23 20:48:42,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-02-23 20:48:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=5287, Unknown=0, NotChecked=0, Total=6320 [2022-02-23 20:48:42,182 INFO L87 Difference]: Start difference. First operand 241 states and 249 transitions. Second operand has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-02-23 20:48:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:44,552 INFO L93 Difference]: Finished difference Result 459 states and 543 transitions. [2022-02-23 20:48:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-23 20:48:44,553 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 258 [2022-02-23 20:48:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:44,554 INFO L225 Difference]: With dead ends: 459 [2022-02-23 20:48:44,554 INFO L226 Difference]: Without dead ends: 352 [2022-02-23 20:48:44,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 745 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11014 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5511, Invalid=27069, Unknown=0, NotChecked=0, Total=32580 [2022-02-23 20:48:44,556 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 723 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:44,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 146 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 20:48:44,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-02-23 20:48:44,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 251. [2022-02-23 20:48:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 200 states have (on average 1.02) internal successors, (204), 201 states have internal predecessors, (204), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-23 20:48:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 259 transitions. [2022-02-23 20:48:44,568 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 259 transitions. Word has length 258 [2022-02-23 20:48:44,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:44,568 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 259 transitions. [2022-02-23 20:48:44,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.3625) internal successors, (269), 78 states have internal predecessors, (269), 51 states have call successors, (53), 4 states have call predecessors, (53), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-02-23 20:48:44,569 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 259 transitions. [2022-02-23 20:48:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-02-23 20:48:44,570 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:44,570 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:44,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:44,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:44,787 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:44,787 INFO L85 PathProgramCache]: Analyzing trace with hash 462951412, now seen corresponding path program 29 times [2022-02-23 20:48:44,787 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:44,787 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938810766] [2022-02-23 20:48:44,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:44,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-02-23 20:48:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:48:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:48:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:48:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:48:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:48:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:48:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:48:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:48:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:48:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:48:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:48:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:48:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:48:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:48:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:48:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:48:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:48:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:48:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:48:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:48:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:48:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:48:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:48:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:48:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:45,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1228 proven. 722 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-23 20:48:45,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:45,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938810766] [2022-02-23 20:48:45,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938810766] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:45,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575231757] [2022-02-23 20:48:45,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:48:45,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:45,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:45,561 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:45,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-23 20:48:45,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2022-02-23 20:48:45,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:45,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 54 conjunts are in the unsatisfiable core [2022-02-23 20:48:45,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-23 20:48:46,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3150 backedges. 1300 proven. 650 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-23 20:48:47,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575231757] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:47,201 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:47,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 83 [2022-02-23 20:48:47,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557838270] [2022-02-23 20:48:47,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:47,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-02-23 20:48:47,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-02-23 20:48:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1517, Invalid=5289, Unknown=0, NotChecked=0, Total=6806 [2022-02-23 20:48:47,203 INFO L87 Difference]: Start difference. First operand 251 states and 259 transitions. Second operand has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-02-23 20:48:48,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:48,595 INFO L93 Difference]: Finished difference Result 468 states and 554 transitions. [2022-02-23 20:48:48,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-23 20:48:48,595 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 268 [2022-02-23 20:48:48,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:48,596 INFO L225 Difference]: With dead ends: 468 [2022-02-23 20:48:48,596 INFO L226 Difference]: Without dead ends: 357 [2022-02-23 20:48:48,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4870 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4054, Invalid=14036, Unknown=0, NotChecked=0, Total=18090 [2022-02-23 20:48:48,598 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 501 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:48,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 116 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 20:48:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-02-23 20:48:48,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 253. [2022-02-23 20:48:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 202 states have (on average 1.0198019801980198) internal successors, (206), 203 states have internal predecessors, (206), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-23 20:48:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 261 transitions. [2022-02-23 20:48:48,610 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 261 transitions. Word has length 268 [2022-02-23 20:48:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:48,610 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 261 transitions. [2022-02-23 20:48:48,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.710843373493976) internal successors, (225), 82 states have internal predecessors, (225), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-02-23 20:48:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 261 transitions. [2022-02-23 20:48:48,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-02-23 20:48:48,611 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:48,612 INFO L514 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:48,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-02-23 20:48:48,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:48,827 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:48,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:48,828 INFO L85 PathProgramCache]: Analyzing trace with hash -799830441, now seen corresponding path program 30 times [2022-02-23 20:48:48,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:48,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266837380] [2022-02-23 20:48:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:48,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-23 20:48:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:48:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:48:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:48:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:48:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:48:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:48:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:48:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:48:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:48:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:48:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:48:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:48:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:48:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:48:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:48:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:48:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:48:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:48:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:48:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:48:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:48:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:48:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:48:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:48:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 700 proven. 1302 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-23 20:48:49,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:49,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266837380] [2022-02-23 20:48:49,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266837380] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:49,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941206848] [2022-02-23 20:48:49,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:48:49,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:49,220 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:49,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-23 20:48:49,335 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2022-02-23 20:48:49,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 55 conjunts are in the unsatisfiable core [2022-02-23 20:48:49,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-23 20:48:49,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3202 backedges. 752 proven. 1250 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2022-02-23 20:48:50,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941206848] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:50,022 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:50,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 36 [2022-02-23 20:48:50,023 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834730017] [2022-02-23 20:48:50,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:50,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-02-23 20:48:50,023 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:50,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-02-23 20:48:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=809, Unknown=0, NotChecked=0, Total=1260 [2022-02-23 20:48:50,024 INFO L87 Difference]: Start difference. First operand 253 states and 261 transitions. Second operand has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-23 20:48:50,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:50,606 INFO L93 Difference]: Finished difference Result 272 states and 282 transitions. [2022-02-23 20:48:50,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-23 20:48:50,606 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 270 [2022-02-23 20:48:50,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:50,607 INFO L225 Difference]: With dead ends: 272 [2022-02-23 20:48:50,607 INFO L226 Difference]: Without dead ends: 270 [2022-02-23 20:48:50,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 613 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1345, Invalid=3211, Unknown=0, NotChecked=0, Total=4556 [2022-02-23 20:48:50,608 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 155 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:50,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 84 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-23 20:48:50,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-02-23 20:48:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 265. [2022-02-23 20:48:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 211 states have (on average 1.018957345971564) internal successors, (215), 212 states have internal predecessors, (215), 30 states have call successors, (30), 24 states have call predecessors, (30), 23 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-23 20:48:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 274 transitions. [2022-02-23 20:48:50,627 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 274 transitions. Word has length 270 [2022-02-23 20:48:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:50,629 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 274 transitions. [2022-02-23 20:48:50,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.611111111111111) internal successors, (166), 33 states have internal predecessors, (166), 28 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-02-23 20:48:50,630 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 274 transitions. [2022-02-23 20:48:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-02-23 20:48:50,631 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:50,631 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:50,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:50,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-02-23 20:48:50,848 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:50,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:50,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1396717185, now seen corresponding path program 31 times [2022-02-23 20:48:50,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:50,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193209131] [2022-02-23 20:48:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:50,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-02-23 20:48:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:48:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:48:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:48:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:48:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:48:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:48:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:48:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:48:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:48:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:48:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:48:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:48:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:48:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:48:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:48:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:48:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:48:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:48:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:48:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:48:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:48:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:48:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:48:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:48:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:48:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:48:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1434 proven. 780 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-02-23 20:48:51,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:51,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193209131] [2022-02-23 20:48:51,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193209131] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:51,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086479510] [2022-02-23 20:48:51,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:48:51,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:51,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:51,685 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:51,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-23 20:48:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:51,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 56 conjunts are in the unsatisfiable core [2022-02-23 20:48:51,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1612 proven. 702 refuted. 0 times theorem prover too weak. 1304 trivial. 0 not checked. [2022-02-23 20:48:53,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3618 backedges. 1510 proven. 702 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-02-23 20:48:53,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086479510] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:53,407 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:53,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 56, 56] total 87 [2022-02-23 20:48:53,407 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181795836] [2022-02-23 20:48:53,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:53,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-02-23 20:48:53,408 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:53,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-02-23 20:48:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1658, Invalid=5824, Unknown=0, NotChecked=0, Total=7482 [2022-02-23 20:48:53,409 INFO L87 Difference]: Start difference. First operand 265 states and 274 transitions. Second operand has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) [2022-02-23 20:48:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:48:54,809 INFO L93 Difference]: Finished difference Result 496 states and 586 transitions. [2022-02-23 20:48:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-23 20:48:54,809 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) Word has length 286 [2022-02-23 20:48:54,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:48:54,811 INFO L225 Difference]: With dead ends: 496 [2022-02-23 20:48:54,811 INFO L226 Difference]: Without dead ends: 375 [2022-02-23 20:48:54,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5356 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4387, Invalid=15353, Unknown=0, NotChecked=0, Total=19740 [2022-02-23 20:48:54,813 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 509 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:48:54,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 108 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 20:48:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-02-23 20:48:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 267. [2022-02-23 20:48:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 213 states have (on average 1.0187793427230047) internal successors, (217), 214 states have internal predecessors, (217), 30 states have call successors, (30), 24 states have call predecessors, (30), 23 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-02-23 20:48:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 276 transitions. [2022-02-23 20:48:54,826 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 276 transitions. Word has length 286 [2022-02-23 20:48:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:48:54,826 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 276 transitions. [2022-02-23 20:48:54,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.7701149425287355) internal successors, (241), 86 states have internal predecessors, (241), 56 states have call successors, (59), 3 states have call predecessors, (59), 2 states have return successors, (57), 56 states have call predecessors, (57), 56 states have call successors, (57) [2022-02-23 20:48:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 276 transitions. [2022-02-23 20:48:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2022-02-23 20:48:54,828 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:48:54,828 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:48:54,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-23 20:48:55,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:55,043 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:48:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:48:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2076929758, now seen corresponding path program 32 times [2022-02-23 20:48:55,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:48:55,043 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487625497] [2022-02-23 20:48:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:48:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:48:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:48:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-02-23 20:48:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:48:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:48:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:48:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:48:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:48:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:48:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:48:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:48:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:48:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:48:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:48:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:48:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:48:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:48:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:48:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:48:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:48:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:48:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:48:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:48:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:48:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:48:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:48:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:48:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:48:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:48:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:48:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1434 proven. 834 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-02-23 20:48:55,892 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:48:55,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487625497] [2022-02-23 20:48:55,892 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487625497] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:48:55,892 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716193379] [2022-02-23 20:48:55,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:48:55,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:48:55,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:48:55,894 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:48:55,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-23 20:48:55,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:48:55,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:48:55,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 58 conjunts are in the unsatisfiable core [2022-02-23 20:48:55,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:48:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-02-23 20:48:57,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:48:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 810 proven. 1458 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-02-23 20:48:57,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716193379] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:48:57,432 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:48:57,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 32, 32] total 89 [2022-02-23 20:48:57,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443355512] [2022-02-23 20:48:57,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:48:57,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-23 20:48:57,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:48:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-23 20:48:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1282, Invalid=6550, Unknown=0, NotChecked=0, Total=7832 [2022-02-23 20:48:57,433 INFO L87 Difference]: Start difference. First operand 267 states and 276 transitions. Second operand has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-02-23 20:49:00,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:00,451 INFO L93 Difference]: Finished difference Result 509 states and 603 transitions. [2022-02-23 20:49:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-23 20:49:00,451 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Word has length 288 [2022-02-23 20:49:00,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:00,453 INFO L225 Difference]: With dead ends: 509 [2022-02-23 20:49:00,453 INFO L226 Difference]: Without dead ends: 390 [2022-02-23 20:49:00,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 631 SyntacticMatches, 1 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13849 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6843, Invalid=33759, Unknown=0, NotChecked=0, Total=40602 [2022-02-23 20:49:00,458 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 972 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 3561 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 3561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:00,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 175 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 3561 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 20:49:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-02-23 20:49:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 277. [2022-02-23 20:49:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 221 states have (on average 1.0180995475113122) internal successors, (225), 222 states have internal predecessors, (225), 31 states have call successors, (31), 25 states have call predecessors, (31), 24 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-02-23 20:49:00,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 286 transitions. [2022-02-23 20:49:00,472 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 286 transitions. Word has length 288 [2022-02-23 20:49:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:00,472 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 286 transitions. [2022-02-23 20:49:00,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.359550561797753) internal successors, (299), 87 states have internal predecessors, (299), 57 states have call successors, (59), 4 states have call predecessors, (59), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-02-23 20:49:00,473 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 286 transitions. [2022-02-23 20:49:00,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2022-02-23 20:49:00,474 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:00,474 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:00,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:00,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:00,687 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1023800729, now seen corresponding path program 33 times [2022-02-23 20:49:00,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:00,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145209760] [2022-02-23 20:49:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-02-23 20:49:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:49:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:49:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:49:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:49:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:49:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:49:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:49:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:49:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:49:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:49:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:49:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:49:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:49:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:49:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:49:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:49:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:49:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:49:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:49:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:49:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:49:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:49:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:49:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:49:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:49:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:49:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:49:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-02-23 20:49:01,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:01,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145209760] [2022-02-23 20:49:01,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145209760] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:01,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587872071] [2022-02-23 20:49:01,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:49:01,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:01,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:01,587 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:01,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-23 20:49:01,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-02-23 20:49:01,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:01,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 60 conjunts are in the unsatisfiable core [2022-02-23 20:49:01,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-02-23 20:49:02,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:03,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2022-02-23 20:49:03,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587872071] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:03,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:03,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 33, 33] total 92 [2022-02-23 20:49:03,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671642300] [2022-02-23 20:49:03,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:03,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-02-23 20:49:03,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:03,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-02-23 20:49:03,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1371, Invalid=7001, Unknown=0, NotChecked=0, Total=8372 [2022-02-23 20:49:03,222 INFO L87 Difference]: Start difference. First operand 277 states and 286 transitions. Second operand has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-02-23 20:49:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:06,279 INFO L93 Difference]: Finished difference Result 527 states and 624 transitions. [2022-02-23 20:49:06,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-02-23 20:49:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 298 [2022-02-23 20:49:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:06,281 INFO L225 Difference]: With dead ends: 527 [2022-02-23 20:49:06,281 INFO L226 Difference]: Without dead ends: 404 [2022-02-23 20:49:06,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14866 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=7319, Invalid=36153, Unknown=0, NotChecked=0, Total=43472 [2022-02-23 20:49:06,284 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 845 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 4140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:06,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 173 Invalid, 4140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 3409 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 20:49:06,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-02-23 20:49:06,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 287. [2022-02-23 20:49:06,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.017467248908297) internal successors, (233), 230 states have internal predecessors, (233), 32 states have call successors, (32), 26 states have call predecessors, (32), 25 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-02-23 20:49:06,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 296 transitions. [2022-02-23 20:49:06,299 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 296 transitions. Word has length 298 [2022-02-23 20:49:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:06,299 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 296 transitions. [2022-02-23 20:49:06,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 3.358695652173913) internal successors, (309), 90 states have internal predecessors, (309), 59 states have call successors, (61), 4 states have call predecessors, (61), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-02-23 20:49:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 296 transitions. [2022-02-23 20:49:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-02-23 20:49:06,301 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:06,301 INFO L514 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:06,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:06,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-23 20:49:06,515 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash 313307984, now seen corresponding path program 34 times [2022-02-23 20:49:06,516 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:06,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854537182] [2022-02-23 20:49:06,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:06,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-02-23 20:49:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:49:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:49:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:49:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:49:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:49:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:49:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:49:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:49:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:49:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:49:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:49:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:49:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:49:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:49:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:49:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:49:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:49:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:49:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:49:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:49:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:49:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:49:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:49:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:49:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:49:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:49:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:49:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:49:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-02-23 20:49:07,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:07,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854537182] [2022-02-23 20:49:07,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854537182] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:07,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161214256] [2022-02-23 20:49:07,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:49:07,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:07,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:07,452 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:07,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-23 20:49:07,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:49:07,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:07,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-23 20:49:07,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-02-23 20:49:08,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2022-02-23 20:49:09,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161214256] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:09,149 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:09,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 34, 34] total 95 [2022-02-23 20:49:09,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237347277] [2022-02-23 20:49:09,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:09,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-02-23 20:49:09,150 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-02-23 20:49:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1463, Invalid=7467, Unknown=0, NotChecked=0, Total=8930 [2022-02-23 20:49:09,151 INFO L87 Difference]: Start difference. First operand 287 states and 296 transitions. Second operand has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-02-23 20:49:12,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:12,358 INFO L93 Difference]: Finished difference Result 545 states and 645 transitions. [2022-02-23 20:49:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-23 20:49:12,359 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Word has length 308 [2022-02-23 20:49:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:12,360 INFO L225 Difference]: With dead ends: 545 [2022-02-23 20:49:12,360 INFO L226 Difference]: Without dead ends: 418 [2022-02-23 20:49:12,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15919 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=7811, Invalid=38629, Unknown=0, NotChecked=0, Total=46440 [2022-02-23 20:49:12,364 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 838 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 4238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:12,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 171 Invalid, 4238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 3433 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 20:49:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-02-23 20:49:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 297. [2022-02-23 20:49:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 237 states have (on average 1.0168776371308017) internal successors, (241), 238 states have internal predecessors, (241), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 20:49:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 306 transitions. [2022-02-23 20:49:12,379 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 306 transitions. Word has length 308 [2022-02-23 20:49:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:12,380 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 306 transitions. [2022-02-23 20:49:12,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.357894736842105) internal successors, (319), 93 states have internal predecessors, (319), 61 states have call successors, (63), 4 states have call predecessors, (63), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-02-23 20:49:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 306 transitions. [2022-02-23 20:49:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-02-23 20:49:12,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:12,381 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:12,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-02-23 20:49:12,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-23 20:49:12,595 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2077768263, now seen corresponding path program 35 times [2022-02-23 20:49:12,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:12,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630656204] [2022-02-23 20:49:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-02-23 20:49:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:49:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:49:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:49:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:49:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:49:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:49:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:49:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:49:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:49:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:49:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:49:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:49:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:49:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:49:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:49:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:49:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:49:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:49:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:49:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:49:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:49:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:49:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:49:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:49:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:49:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:49:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:49:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:49:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:49:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-23 20:49:13,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:13,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630656204] [2022-02-23 20:49:13,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630656204] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:13,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241094985] [2022-02-23 20:49:13,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:49:13,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:13,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:13,589 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:13,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-23 20:49:13,713 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2022-02-23 20:49:13,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:13,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-23 20:49:13,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:15,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-23 20:49:15,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-23 20:49:15,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241094985] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:15,747 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:15,747 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64, 64] total 98 [2022-02-23 20:49:15,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983042408] [2022-02-23 20:49:15,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:15,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-02-23 20:49:15,748 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:15,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-02-23 20:49:15,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=7389, Unknown=0, NotChecked=0, Total=9506 [2022-02-23 20:49:15,749 INFO L87 Difference]: Start difference. First operand 297 states and 306 transitions. Second operand has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-02-23 20:49:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:17,488 INFO L93 Difference]: Finished difference Result 554 states and 656 transitions. [2022-02-23 20:49:17,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-23 20:49:17,488 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 318 [2022-02-23 20:49:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:17,490 INFO L225 Difference]: With dead ends: 554 [2022-02-23 20:49:17,490 INFO L226 Difference]: Without dead ends: 423 [2022-02-23 20:49:17,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 696 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6895 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5684, Invalid=19756, Unknown=0, NotChecked=0, Total=25440 [2022-02-23 20:49:17,492 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 687 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1742 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 1742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:17,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 126 Invalid, 2111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 1742 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-23 20:49:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-02-23 20:49:17,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 299. [2022-02-23 20:49:17,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 239 states have (on average 1.0167364016736402) internal successors, (243), 240 states have internal predecessors, (243), 33 states have call successors, (33), 27 states have call predecessors, (33), 26 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 20:49:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 308 transitions. [2022-02-23 20:49:17,508 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 308 transitions. Word has length 318 [2022-02-23 20:49:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:17,508 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 308 transitions. [2022-02-23 20:49:17,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.704081632653061) internal successors, (265), 97 states have internal predecessors, (265), 63 states have call successors, (65), 3 states have call predecessors, (65), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-02-23 20:49:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 308 transitions. [2022-02-23 20:49:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-02-23 20:49:17,510 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:17,510 INFO L514 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:17,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:17,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-23 20:49:17,721 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1456322026, now seen corresponding path program 36 times [2022-02-23 20:49:17,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:17,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108301336] [2022-02-23 20:49:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:49:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:49:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:49:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:49:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:49:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:49:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:49:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:49:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:49:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:49:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:49:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:49:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:49:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:49:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:49:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:49:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:49:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:49:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:49:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:49:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:49:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:49:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:49:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:49:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:49:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:49:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:49:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:49:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:49:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:49:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-23 20:49:18,227 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:18,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108301336] [2022-02-23 20:49:18,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108301336] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:18,227 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845497979] [2022-02-23 20:49:18,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:49:18,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:18,228 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-23 20:49:18,357 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2022-02-23 20:49:18,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:18,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 65 conjunts are in the unsatisfiable core [2022-02-23 20:49:18,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-23 20:49:18,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-02-23 20:49:19,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845497979] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:19,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:19,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 41 [2022-02-23 20:49:19,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20913935] [2022-02-23 20:49:19,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:19,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-02-23 20:49:19,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-02-23 20:49:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=611, Invalid=1029, Unknown=0, NotChecked=0, Total=1640 [2022-02-23 20:49:19,153 INFO L87 Difference]: Start difference. First operand 299 states and 308 transitions. Second operand has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 20:49:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:19,889 INFO L93 Difference]: Finished difference Result 318 states and 329 transitions. [2022-02-23 20:49:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-23 20:49:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 320 [2022-02-23 20:49:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:19,891 INFO L225 Difference]: With dead ends: 318 [2022-02-23 20:49:19,891 INFO L226 Difference]: Without dead ends: 316 [2022-02-23 20:49:19,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 728 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1252 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1825, Invalid=4181, Unknown=0, NotChecked=0, Total=6006 [2022-02-23 20:49:19,892 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 166 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:19,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 99 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 20:49:19,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-02-23 20:49:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2022-02-23 20:49:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 248 states have (on average 1.0161290322580645) internal successors, (252), 249 states have internal predecessors, (252), 35 states have call successors, (35), 28 states have call predecessors, (35), 27 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-02-23 20:49:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 321 transitions. [2022-02-23 20:49:19,907 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 321 transitions. Word has length 320 [2022-02-23 20:49:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:19,908 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 321 transitions. [2022-02-23 20:49:19,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 38 states have internal predecessors, (191), 33 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-02-23 20:49:19,908 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 321 transitions. [2022-02-23 20:49:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2022-02-23 20:49:19,909 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:19,909 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:19,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:20,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-23 20:49:20,129 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:20,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:20,129 INFO L85 PathProgramCache]: Analyzing trace with hash 831941394, now seen corresponding path program 37 times [2022-02-23 20:49:20,129 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:20,129 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058998561] [2022-02-23 20:49:20,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:20,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-02-23 20:49:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:49:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:49:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:49:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:49:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:49:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:49:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:49:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:49:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:49:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:49:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:49:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:49:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:49:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:49:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:49:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:49:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:49:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:49:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:49:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:49:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:49:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:49:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:49:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:49:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:49:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:49:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:49:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:49:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:49:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:49:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:49:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-02-23 20:49:21,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:21,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058998561] [2022-02-23 20:49:21,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058998561] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:21,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351453715] [2022-02-23 20:49:21,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:49:21,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:21,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:21,237 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:21,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-23 20:49:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:21,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 66 conjunts are in the unsatisfiable core [2022-02-23 20:49:21,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:23,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2022-02-23 20:49:23,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:23,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2022-02-23 20:49:23,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351453715] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:23,471 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:23,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 66, 66] total 102 [2022-02-23 20:49:23,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545894644] [2022-02-23 20:49:23,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:23,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-23 20:49:23,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:23,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-23 20:49:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=8019, Unknown=0, NotChecked=0, Total=10302 [2022-02-23 20:49:23,473 INFO L87 Difference]: Start difference. First operand 311 states and 321 transitions. Second operand has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2022-02-23 20:49:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:25,426 INFO L93 Difference]: Finished difference Result 582 states and 688 transitions. [2022-02-23 20:49:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-23 20:49:25,427 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) Word has length 336 [2022-02-23 20:49:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:25,428 INFO L225 Difference]: With dead ends: 582 [2022-02-23 20:49:25,428 INFO L226 Difference]: Without dead ends: 441 [2022-02-23 20:49:25,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7471 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=6077, Invalid=21313, Unknown=0, NotChecked=0, Total=27390 [2022-02-23 20:49:25,431 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 668 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:25,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 138 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-23 20:49:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-02-23 20:49:25,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 313. [2022-02-23 20:49:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 250 states have (on average 1.016) internal successors, (254), 251 states have internal predecessors, (254), 35 states have call successors, (35), 28 states have call predecessors, (35), 27 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-02-23 20:49:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 323 transitions. [2022-02-23 20:49:25,447 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 323 transitions. Word has length 336 [2022-02-23 20:49:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:25,447 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 323 transitions. [2022-02-23 20:49:25,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.7549019607843137) internal successors, (281), 101 states have internal predecessors, (281), 66 states have call successors, (69), 3 states have call predecessors, (69), 2 states have return successors, (67), 66 states have call predecessors, (67), 66 states have call successors, (67) [2022-02-23 20:49:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 323 transitions. [2022-02-23 20:49:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-02-23 20:49:25,449 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:25,449 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:25,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:25,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-23 20:49:25,663 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:25,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash -373333003, now seen corresponding path program 38 times [2022-02-23 20:49:25,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:25,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000122295] [2022-02-23 20:49:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-02-23 20:49:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:49:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:49:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:49:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:49:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:49:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:49:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:49:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:49:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:49:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:49:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:49:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:49:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:49:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:49:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:49:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:49:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:49:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:49:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:49:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:49:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:49:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:49:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:49:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:49:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:49:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:49:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:49:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:49:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:49:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:49:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:49:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-02-23 20:49:26,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:26,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000122295] [2022-02-23 20:49:26,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000122295] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:26,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986007185] [2022-02-23 20:49:26,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:49:26,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:26,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:26,783 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:26,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-23 20:49:26,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:49:26,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:26,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-23 20:49:26,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-02-23 20:49:28,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2022-02-23 20:49:28,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986007185] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:28,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:28,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 37, 37] total 104 [2022-02-23 20:49:28,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932561648] [2022-02-23 20:49:28,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:28,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-23 20:49:28,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-23 20:49:28,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1757, Invalid=8955, Unknown=0, NotChecked=0, Total=10712 [2022-02-23 20:49:28,685 INFO L87 Difference]: Start difference. First operand 313 states and 323 transitions. Second operand has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-02-23 20:49:32,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:32,345 INFO L93 Difference]: Finished difference Result 595 states and 705 transitions. [2022-02-23 20:49:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-23 20:49:32,345 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Word has length 338 [2022-02-23 20:49:32,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:32,347 INFO L225 Difference]: With dead ends: 595 [2022-02-23 20:49:32,347 INFO L226 Difference]: Without dead ends: 456 [2022-02-23 20:49:32,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 741 SyntacticMatches, 1 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19294 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=9383, Invalid=46549, Unknown=0, NotChecked=0, Total=55932 [2022-02-23 20:49:32,351 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 1109 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 4669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:32,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 170 Invalid, 4669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [948 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 20:49:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-02-23 20:49:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 323. [2022-02-23 20:49:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 258 states have (on average 1.0155038759689923) internal successors, (262), 259 states have internal predecessors, (262), 36 states have call successors, (36), 29 states have call predecessors, (36), 28 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-02-23 20:49:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 333 transitions. [2022-02-23 20:49:32,368 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 333 transitions. Word has length 338 [2022-02-23 20:49:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:32,368 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 333 transitions. [2022-02-23 20:49:32,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.355769230769231) internal successors, (349), 102 states have internal predecessors, (349), 67 states have call successors, (69), 4 states have call predecessors, (69), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-02-23 20:49:32,368 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 333 transitions. [2022-02-23 20:49:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-02-23 20:49:32,370 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:32,370 INFO L514 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:32,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-23 20:49:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-02-23 20:49:32,571 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1595795116, now seen corresponding path program 39 times [2022-02-23 20:49:32,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:32,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816067853] [2022-02-23 20:49:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:32,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-02-23 20:49:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:49:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:49:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:49:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:49:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:49:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:49:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:49:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:49:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:49:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:49:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:49:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:49:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:49:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:49:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:49:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:49:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:49:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:49:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:49:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:49:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:49:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:49:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:49:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:49:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:49:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:49:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:49:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:49:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:49:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:49:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:49:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:49:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-02-23 20:49:33,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:33,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816067853] [2022-02-23 20:49:33,726 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816067853] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:33,726 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239288137] [2022-02-23 20:49:33,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:49:33,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:33,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:33,727 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:33,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-23 20:49:33,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2022-02-23 20:49:33,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:33,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-23 20:49:33,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-02-23 20:49:35,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2022-02-23 20:49:35,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239288137] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:35,835 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:35,835 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 38, 38] total 107 [2022-02-23 20:49:35,835 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742855891] [2022-02-23 20:49:35,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:35,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-02-23 20:49:35,836 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:35,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-02-23 20:49:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1861, Invalid=9481, Unknown=0, NotChecked=0, Total=11342 [2022-02-23 20:49:35,837 INFO L87 Difference]: Start difference. First operand 323 states and 333 transitions. Second operand has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-02-23 20:49:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:39,625 INFO L93 Difference]: Finished difference Result 613 states and 726 transitions. [2022-02-23 20:49:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-02-23 20:49:39,625 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 348 [2022-02-23 20:49:39,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:39,627 INFO L225 Difference]: With dead ends: 613 [2022-02-23 20:49:39,627 INFO L226 Difference]: Without dead ends: 470 [2022-02-23 20:49:39,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1006 GetRequests, 763 SyntacticMatches, 1 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20491 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9939, Invalid=49353, Unknown=0, NotChecked=0, Total=59292 [2022-02-23 20:49:39,631 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1100 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3800 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 3800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:39,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 183 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 3800 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 20:49:39,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-02-23 20:49:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 333. [2022-02-23 20:49:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 266 states have (on average 1.0150375939849625) internal successors, (270), 267 states have internal predecessors, (270), 37 states have call successors, (37), 30 states have call predecessors, (37), 29 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-02-23 20:49:39,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 343 transitions. [2022-02-23 20:49:39,649 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 343 transitions. Word has length 348 [2022-02-23 20:49:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:39,649 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 343 transitions. [2022-02-23 20:49:39,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 3.3551401869158877) internal successors, (359), 105 states have internal predecessors, (359), 69 states have call successors, (71), 4 states have call predecessors, (71), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-02-23 20:49:39,650 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 343 transitions. [2022-02-23 20:49:39,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2022-02-23 20:49:39,651 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:39,651 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:39,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-02-23 20:49:39,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-02-23 20:49:39,867 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:39,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:39,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2025393501, now seen corresponding path program 40 times [2022-02-23 20:49:39,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:39,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109321922] [2022-02-23 20:49:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-02-23 20:49:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:49:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:49:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:49:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:49:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:49:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:49:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:49:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:49:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:49:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:49:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:49:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:49:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:49:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:49:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:49:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:49:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:49:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:49:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:49:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:49:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:49:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:49:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:49:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:49:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:49:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:49:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:49:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:49:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:49:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:49:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:49:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:49:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:49:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-02-23 20:49:41,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:41,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109321922] [2022-02-23 20:49:41,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109321922] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:41,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633329323] [2022-02-23 20:49:41,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:49:41,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:41,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:41,109 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:41,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-23 20:49:41,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:49:41,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:41,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-23 20:49:41,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-02-23 20:49:42,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2022-02-23 20:49:43,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633329323] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:43,196 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:43,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 39, 39] total 110 [2022-02-23 20:49:43,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494203986] [2022-02-23 20:49:43,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:43,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-02-23 20:49:43,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:43,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-02-23 20:49:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1968, Invalid=10022, Unknown=0, NotChecked=0, Total=11990 [2022-02-23 20:49:43,198 INFO L87 Difference]: Start difference. First operand 333 states and 343 transitions. Second operand has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-02-23 20:49:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:47,292 INFO L93 Difference]: Finished difference Result 631 states and 747 transitions. [2022-02-23 20:49:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-02-23 20:49:47,293 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) Word has length 358 [2022-02-23 20:49:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:47,294 INFO L225 Difference]: With dead ends: 631 [2022-02-23 20:49:47,294 INFO L226 Difference]: Without dead ends: 484 [2022-02-23 20:49:47,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 785 SyntacticMatches, 1 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21724 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=10511, Invalid=52239, Unknown=0, NotChecked=0, Total=62750 [2022-02-23 20:49:47,298 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1099 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:47,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 196 Invalid, 5021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 20:49:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-02-23 20:49:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 343. [2022-02-23 20:49:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 274 states have (on average 1.0145985401459854) internal successors, (278), 275 states have internal predecessors, (278), 38 states have call successors, (38), 31 states have call predecessors, (38), 30 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-23 20:49:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 353 transitions. [2022-02-23 20:49:47,318 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 353 transitions. Word has length 358 [2022-02-23 20:49:47,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:47,323 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 353 transitions. [2022-02-23 20:49:47,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 3.3545454545454545) internal successors, (369), 108 states have internal predecessors, (369), 71 states have call successors, (73), 4 states have call predecessors, (73), 1 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-02-23 20:49:47,323 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 353 transitions. [2022-02-23 20:49:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2022-02-23 20:49:47,325 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:47,325 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:47,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:47,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-02-23 20:49:47,531 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash 372111322, now seen corresponding path program 41 times [2022-02-23 20:49:47,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:47,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170375053] [2022-02-23 20:49:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-02-23 20:49:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:49:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:49:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:49:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:49:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:49:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:49:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:49:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:49:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:49:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:49:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:49:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:49:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:49:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:49:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:49:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:49:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:49:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:49:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:49:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:49:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:49:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:49:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:49:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:49:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:49:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:49:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:49:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:49:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:49:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:49:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:49:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:49:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:49:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:49:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-23 20:49:48,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:48,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170375053] [2022-02-23 20:49:48,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170375053] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:48,832 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382296609] [2022-02-23 20:49:48,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:49:48,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:48,833 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:48,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-23 20:49:48,988 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2022-02-23 20:49:48,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 74 conjunts are in the unsatisfiable core [2022-02-23 20:49:48,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-23 20:49:50,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-23 20:49:51,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382296609] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:51,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:51,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74, 74] total 113 [2022-02-23 20:49:51,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289845820] [2022-02-23 20:49:51,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:51,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-02-23 20:49:51,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:51,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-02-23 20:49:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2817, Invalid=9839, Unknown=0, NotChecked=0, Total=12656 [2022-02-23 20:49:51,442 INFO L87 Difference]: Start difference. First operand 343 states and 353 transitions. Second operand has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-02-23 20:49:53,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:53,619 INFO L93 Difference]: Finished difference Result 640 states and 758 transitions. [2022-02-23 20:49:53,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-23 20:49:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 368 [2022-02-23 20:49:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:53,625 INFO L225 Difference]: With dead ends: 640 [2022-02-23 20:49:53,625 INFO L226 Difference]: Without dead ends: 489 [2022-02-23 20:49:53,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9270 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=7589, Invalid=26451, Unknown=0, NotChecked=0, Total=34040 [2022-02-23 20:49:53,627 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 891 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:53,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 111 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-23 20:49:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-02-23 20:49:53,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 345. [2022-02-23 20:49:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 276 states have (on average 1.0144927536231885) internal successors, (280), 277 states have internal predecessors, (280), 38 states have call successors, (38), 31 states have call predecessors, (38), 30 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-23 20:49:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 355 transitions. [2022-02-23 20:49:53,648 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 355 transitions. Word has length 368 [2022-02-23 20:49:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:53,648 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 355 transitions. [2022-02-23 20:49:53,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.6991150442477876) internal successors, (305), 112 states have internal predecessors, (305), 73 states have call successors, (75), 3 states have call predecessors, (75), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-02-23 20:49:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 355 transitions. [2022-02-23 20:49:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2022-02-23 20:49:53,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:53,650 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:53,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:53,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:53,855 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1027431235, now seen corresponding path program 42 times [2022-02-23 20:49:53,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:53,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452973203] [2022-02-23 20:49:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:53,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:49:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:49:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:49:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:49:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:49:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:49:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:49:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:49:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:49:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:49:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:49:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:49:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:49:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:49:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:49:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:49:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:49:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:49:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:49:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:49:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:49:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:49:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:49:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:49:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:49:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:49:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:49:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:49:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:49:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:49:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:49:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:49:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:49:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:49:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:49:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-23 20:49:54,515 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:54,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452973203] [2022-02-23 20:49:54,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452973203] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:54,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083074487] [2022-02-23 20:49:54,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:49:54,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:54,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:54,520 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:54,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-23 20:49:54,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2022-02-23 20:49:54,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:49:54,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 75 conjunts are in the unsatisfiable core [2022-02-23 20:49:54,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:49:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-23 20:49:55,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:49:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2022-02-23 20:49:55,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083074487] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:49:55,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:49:55,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41, 41] total 46 [2022-02-23 20:49:55,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110494202] [2022-02-23 20:49:55,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:49:55,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-02-23 20:49:55,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:49:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-02-23 20:49:55,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=1274, Unknown=0, NotChecked=0, Total=2070 [2022-02-23 20:49:55,586 INFO L87 Difference]: Start difference. First operand 345 states and 355 transitions. Second operand has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-23 20:49:56,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:49:56,446 INFO L93 Difference]: Finished difference Result 364 states and 376 transitions. [2022-02-23 20:49:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-23 20:49:56,447 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 370 [2022-02-23 20:49:56,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:49:56,448 INFO L225 Difference]: With dead ends: 364 [2022-02-23 20:49:56,448 INFO L226 Difference]: Without dead ends: 362 [2022-02-23 20:49:56,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 843 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2380, Invalid=5276, Unknown=0, NotChecked=0, Total=7656 [2022-02-23 20:49:56,449 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 190 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:49:56,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 104 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-23 20:49:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-02-23 20:49:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-02-23 20:49:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.0140350877192983) internal successors, (289), 286 states have internal predecessors, (289), 40 states have call successors, (40), 32 states have call predecessors, (40), 31 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-02-23 20:49:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 368 transitions. [2022-02-23 20:49:56,495 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 368 transitions. Word has length 370 [2022-02-23 20:49:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:49:56,495 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 368 transitions. [2022-02-23 20:49:56,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.695652173913044) internal successors, (216), 43 states have internal predecessors, (216), 38 states have call successors, (42), 4 states have call predecessors, (42), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-02-23 20:49:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 368 transitions. [2022-02-23 20:49:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-02-23 20:49:56,497 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:49:56,497 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:49:56,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-23 20:49:56,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:56,711 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:49:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:49:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1645128731, now seen corresponding path program 43 times [2022-02-23 20:49:56,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:49:56,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311113902] [2022-02-23 20:49:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:49:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:49:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:49:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-02-23 20:49:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:49:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:49:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:49:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:49:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:49:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:49:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:49:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:49:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:49:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:49:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:49:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:49:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:49:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:49:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:49:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:49:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:49:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:49:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:49:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:49:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:49:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:49:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:49:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:49:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:49:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:49:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:49:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:49:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:49:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:49:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:49:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:49:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:49:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:49:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:49:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:49:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-02-23 20:49:58,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:49:58,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311113902] [2022-02-23 20:49:58,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311113902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:49:58,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706987891] [2022-02-23 20:49:58,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:49:58,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:49:58,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:49:58,096 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:49:58,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-23 20:49:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:49:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 76 conjunts are in the unsatisfiable core [2022-02-23 20:49:58,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2022-02-23 20:50:00,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2022-02-23 20:50:00,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706987891] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:00,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:00,792 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 76, 76] total 117 [2022-02-23 20:50:00,792 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281644965] [2022-02-23 20:50:00,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:00,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-02-23 20:50:00,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-02-23 20:50:00,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3008, Invalid=10564, Unknown=0, NotChecked=0, Total=13572 [2022-02-23 20:50:00,794 INFO L87 Difference]: Start difference. First operand 357 states and 368 transitions. Second operand has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2022-02-23 20:50:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:03,283 INFO L93 Difference]: Finished difference Result 668 states and 790 transitions. [2022-02-23 20:50:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-23 20:50:03,283 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) Word has length 386 [2022-02-23 20:50:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:03,284 INFO L225 Difference]: With dead ends: 668 [2022-02-23 20:50:03,285 INFO L226 Difference]: Without dead ends: 507 [2022-02-23 20:50:03,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9936 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=8042, Invalid=28248, Unknown=0, NotChecked=0, Total=36290 [2022-02-23 20:50:03,287 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 709 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:03,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 148 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 20:50:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-02-23 20:50:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 359. [2022-02-23 20:50:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 287 states have (on average 1.0139372822299653) internal successors, (291), 288 states have internal predecessors, (291), 40 states have call successors, (40), 32 states have call predecessors, (40), 31 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-02-23 20:50:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 370 transitions. [2022-02-23 20:50:03,309 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 370 transitions. Word has length 386 [2022-02-23 20:50:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:03,309 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 370 transitions. [2022-02-23 20:50:03,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 2.7435897435897436) internal successors, (321), 116 states have internal predecessors, (321), 76 states have call successors, (79), 3 states have call predecessors, (79), 2 states have return successors, (77), 76 states have call predecessors, (77), 76 states have call successors, (77) [2022-02-23 20:50:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 370 transitions. [2022-02-23 20:50:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-02-23 20:50:03,311 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:03,311 INFO L514 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:03,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-23 20:50:03,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-23 20:50:03,531 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1522029048, now seen corresponding path program 44 times [2022-02-23 20:50:03,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:03,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767303811] [2022-02-23 20:50:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:03,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-02-23 20:50:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:50:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:50:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:50:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:50:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:50:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:50:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:50:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:50:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:50:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:50:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:50:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:50:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:50:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:50:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:50:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:50:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:50:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:50:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:50:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:50:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:50:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:50:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:50:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:50:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:50:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:50:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:50:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:50:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:50:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:50:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:50:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:50:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:50:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:50:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:50:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:50:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-02-23 20:50:05,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767303811] [2022-02-23 20:50:05,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767303811] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:05,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3331343] [2022-02-23 20:50:05,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:50:05,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:05,058 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:05,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-23 20:50:05,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:50:05,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:50:05,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 78 conjunts are in the unsatisfiable core [2022-02-23 20:50:05,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:06,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-02-23 20:50:06,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 1480 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2022-02-23 20:50:07,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3331343] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:07,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:07,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 42, 42] total 119 [2022-02-23 20:50:07,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313260438] [2022-02-23 20:50:07,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:07,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-02-23 20:50:07,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:07,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-02-23 20:50:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=11735, Unknown=0, NotChecked=0, Total=14042 [2022-02-23 20:50:07,382 INFO L87 Difference]: Start difference. First operand 359 states and 370 transitions. Second operand has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-02-23 20:50:12,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:12,085 INFO L93 Difference]: Finished difference Result 681 states and 807 transitions. [2022-02-23 20:50:12,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-23 20:50:12,086 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Word has length 388 [2022-02-23 20:50:12,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:12,087 INFO L225 Difference]: With dead ends: 681 [2022-02-23 20:50:12,087 INFO L226 Difference]: Without dead ends: 522 [2022-02-23 20:50:12,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 851 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25639 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=12323, Invalid=61389, Unknown=0, NotChecked=0, Total=73712 [2022-02-23 20:50:12,090 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 1276 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4445 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 5538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 4445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:12,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 205 Invalid, 5538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 4445 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 20:50:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-02-23 20:50:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 369. [2022-02-23 20:50:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 295 states have (on average 1.0135593220338983) internal successors, (299), 296 states have internal predecessors, (299), 41 states have call successors, (41), 33 states have call predecessors, (41), 32 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-02-23 20:50:12,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 380 transitions. [2022-02-23 20:50:12,112 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 380 transitions. Word has length 388 [2022-02-23 20:50:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:12,112 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 380 transitions. [2022-02-23 20:50:12,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 3.3529411764705883) internal successors, (399), 117 states have internal predecessors, (399), 77 states have call successors, (79), 4 states have call predecessors, (79), 1 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-02-23 20:50:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 380 transitions. [2022-02-23 20:50:12,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2022-02-23 20:50:12,114 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:12,114 INFO L514 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:12,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-23 20:50:12,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-23 20:50:12,323 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1213907201, now seen corresponding path program 45 times [2022-02-23 20:50:12,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:12,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801385862] [2022-02-23 20:50:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:12,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-02-23 20:50:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:50:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:50:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:50:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:50:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:50:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:50:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:50:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:50:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:50:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:50:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:50:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:50:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:50:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:50:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:50:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:50:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:50:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:50:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:50:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:50:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:50:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:50:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:50:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:50:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:50:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:50:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:50:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:50:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:50:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:50:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:50:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:50:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:50:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:50:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:50:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:50:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:50:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 2853 proven. 1593 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-02-23 20:50:13,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:13,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801385862] [2022-02-23 20:50:13,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801385862] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:13,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69172843] [2022-02-23 20:50:13,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:50:13,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:13,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:13,823 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:13,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-23 20:50:13,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2022-02-23 20:50:13,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:50:13,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 80 conjunts are in the unsatisfiable core [2022-02-23 20:50:13,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-02-23 20:50:15,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7258 backedges. 1558 proven. 2888 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2022-02-23 20:50:16,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69172843] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:16,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:16,248 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 43, 43] total 122 [2022-02-23 20:50:16,248 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374118667] [2022-02-23 20:50:16,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:16,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2022-02-23 20:50:16,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2022-02-23 20:50:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2426, Invalid=12336, Unknown=0, NotChecked=0, Total=14762 [2022-02-23 20:50:16,251 INFO L87 Difference]: Start difference. First operand 369 states and 380 transitions. Second operand has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-02-23 20:50:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:21,119 INFO L93 Difference]: Finished difference Result 699 states and 828 transitions. [2022-02-23 20:50:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-23 20:50:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Word has length 398 [2022-02-23 20:50:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:21,122 INFO L225 Difference]: With dead ends: 699 [2022-02-23 20:50:21,122 INFO L226 Difference]: Without dead ends: 536 [2022-02-23 20:50:21,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1151 GetRequests, 873 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27016 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=12959, Invalid=64603, Unknown=0, NotChecked=0, Total=77562 [2022-02-23 20:50:21,127 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 1057 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4994 mSolverCounterSat, 957 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 957 IncrementalHoareTripleChecker+Valid, 4994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:21,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 213 Invalid, 5951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [957 Valid, 4994 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-23 20:50:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-02-23 20:50:21,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 379. [2022-02-23 20:50:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 303 states have (on average 1.0132013201320131) internal successors, (307), 304 states have internal predecessors, (307), 42 states have call successors, (42), 34 states have call predecessors, (42), 33 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-02-23 20:50:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 390 transitions. [2022-02-23 20:50:21,170 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 390 transitions. Word has length 398 [2022-02-23 20:50:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:21,170 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 390 transitions. [2022-02-23 20:50:21,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 3.3524590163934427) internal successors, (409), 120 states have internal predecessors, (409), 79 states have call successors, (81), 4 states have call predecessors, (81), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-02-23 20:50:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 390 transitions. [2022-02-23 20:50:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-02-23 20:50:21,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:21,172 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:21,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-23 20:50:21,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-02-23 20:50:21,373 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:21,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:21,374 INFO L85 PathProgramCache]: Analyzing trace with hash 320244022, now seen corresponding path program 46 times [2022-02-23 20:50:21,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:21,374 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069542309] [2022-02-23 20:50:21,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:21,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-02-23 20:50:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:50:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:50:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:50:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:50:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:50:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:50:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:50:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:50:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:50:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:50:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:50:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:50:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:50:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:50:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:50:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:50:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:50:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:50:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:50:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:50:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:50:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:50:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:50:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:50:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:50:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:50:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:50:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:50:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:50:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:50:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:50:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:50:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:50:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:50:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:50:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:50:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:50:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:50:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 3006 proven. 1674 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-02-23 20:50:22,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:22,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069542309] [2022-02-23 20:50:22,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069542309] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:22,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877272930] [2022-02-23 20:50:22,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:50:22,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:22,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:22,952 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:22,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-23 20:50:23,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:50:23,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:50:23,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 82 conjunts are in the unsatisfiable core [2022-02-23 20:50:23,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-02-23 20:50:24,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7644 backedges. 1638 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2022-02-23 20:50:25,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877272930] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:25,502 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:25,502 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 44, 44] total 125 [2022-02-23 20:50:25,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490937069] [2022-02-23 20:50:25,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:25,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-02-23 20:50:25,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:25,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-02-23 20:50:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2548, Invalid=12952, Unknown=0, NotChecked=0, Total=15500 [2022-02-23 20:50:25,505 INFO L87 Difference]: Start difference. First operand 379 states and 390 transitions. Second operand has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-02-23 20:50:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:30,628 INFO L93 Difference]: Finished difference Result 717 states and 849 transitions. [2022-02-23 20:50:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-02-23 20:50:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Word has length 408 [2022-02-23 20:50:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:30,631 INFO L225 Difference]: With dead ends: 717 [2022-02-23 20:50:30,631 INFO L226 Difference]: Without dead ends: 550 [2022-02-23 20:50:30,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28429 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=13611, Invalid=67899, Unknown=0, NotChecked=0, Total=81510 [2022-02-23 20:50:30,636 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 1232 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 1052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 5387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1052 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:30,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 196 Invalid, 5387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1052 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 20:50:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-02-23 20:50:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 389. [2022-02-23 20:50:30,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 311 states have (on average 1.0128617363344052) internal successors, (315), 312 states have internal predecessors, (315), 43 states have call successors, (43), 35 states have call predecessors, (43), 34 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-02-23 20:50:30,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 400 transitions. [2022-02-23 20:50:30,679 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 400 transitions. Word has length 408 [2022-02-23 20:50:30,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:30,679 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 400 transitions. [2022-02-23 20:50:30,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 3.352) internal successors, (419), 123 states have internal predecessors, (419), 81 states have call successors, (83), 4 states have call predecessors, (83), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-02-23 20:50:30,679 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 400 transitions. [2022-02-23 20:50:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2022-02-23 20:50:30,681 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:30,681 INFO L514 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:30,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-23 20:50:30,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:30,895 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:30,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1339227309, now seen corresponding path program 47 times [2022-02-23 20:50:30,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:30,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109871393] [2022-02-23 20:50:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:30,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-02-23 20:50:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:50:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:50:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:50:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:50:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:50:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:50:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:50:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:50:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:50:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:50:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:50:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:50:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:50:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:50:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:50:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:50:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:50:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:50:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:50:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:50:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:50:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:50:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:50:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:50:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:50:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:50:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:50:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:50:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:50:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:50:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:50:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:50:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:50:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:50:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:50:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:50:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:50:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:50:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:50:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3163 proven. 1757 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-23 20:50:32,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:32,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109871393] [2022-02-23 20:50:32,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109871393] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:32,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10600145] [2022-02-23 20:50:32,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:50:32,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:32,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:32,545 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:32,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-23 20:50:32,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2022-02-23 20:50:32,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:50:32,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 84 conjunts are in the unsatisfiable core [2022-02-23 20:50:32,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-23 20:50:35,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8040 backedges. 3280 proven. 1640 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-23 20:50:35,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10600145] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:35,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:35,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84, 84] total 128 [2022-02-23 20:50:35,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643191345] [2022-02-23 20:50:35,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:35,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-02-23 20:50:35,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-02-23 20:50:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3617, Invalid=12639, Unknown=0, NotChecked=0, Total=16256 [2022-02-23 20:50:35,772 INFO L87 Difference]: Start difference. First operand 389 states and 400 transitions. Second operand has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-02-23 20:50:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:38,748 INFO L93 Difference]: Finished difference Result 726 states and 860 transitions. [2022-02-23 20:50:38,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-02-23 20:50:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) Word has length 418 [2022-02-23 20:50:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:38,750 INFO L225 Difference]: With dead ends: 726 [2022-02-23 20:50:38,750 INFO L226 Difference]: Without dead ends: 555 [2022-02-23 20:50:38,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11995 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=9769, Invalid=34121, Unknown=0, NotChecked=0, Total=43890 [2022-02-23 20:50:38,754 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 880 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 3157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:38,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 151 Invalid, 3157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 20:50:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-02-23 20:50:38,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 391. [2022-02-23 20:50:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 313 states have (on average 1.012779552715655) internal successors, (317), 314 states have internal predecessors, (317), 43 states have call successors, (43), 35 states have call predecessors, (43), 34 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-02-23 20:50:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 402 transitions. [2022-02-23 20:50:38,804 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 402 transitions. Word has length 418 [2022-02-23 20:50:38,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:38,805 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 402 transitions. [2022-02-23 20:50:38,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.6953125) internal successors, (345), 127 states have internal predecessors, (345), 83 states have call successors, (85), 3 states have call predecessors, (85), 1 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2022-02-23 20:50:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 402 transitions. [2022-02-23 20:50:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-02-23 20:50:38,807 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:38,807 INFO L514 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:38,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-23 20:50:39,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-23 20:50:39,011 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:39,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1950348592, now seen corresponding path program 48 times [2022-02-23 20:50:39,011 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:39,012 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184673172] [2022-02-23 20:50:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:39,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:50:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:50:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:50:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:50:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:50:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:50:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:50:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:50:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:50:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:50:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:50:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:50:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:50:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:50:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:50:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:50:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:50:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:50:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:50:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:50:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:50:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:50:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:50:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:50:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:50:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:50:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:50:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:50:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:50:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:50:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:50:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:50:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:50:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:50:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:50:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:50:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:50:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:50:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:50:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:50:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1720 proven. 3282 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-23 20:50:39,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:39,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184673172] [2022-02-23 20:50:39,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184673172] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:39,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66448521] [2022-02-23 20:50:39,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:50:39,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:39,765 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:39,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-23 20:50:39,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2022-02-23 20:50:39,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:50:39,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 85 conjunts are in the unsatisfiable core [2022-02-23 20:50:39,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-23 20:50:40,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8122 backedges. 1802 proven. 3200 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2022-02-23 20:50:41,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66448521] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:41,105 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:41,105 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 51 [2022-02-23 20:50:41,105 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342553459] [2022-02-23 20:50:41,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:41,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-02-23 20:50:41,106 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-02-23 20:50:41,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=1544, Unknown=0, NotChecked=0, Total=2550 [2022-02-23 20:50:41,107 INFO L87 Difference]: Start difference. First operand 391 states and 402 transitions. Second operand has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-02-23 20:50:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:42,083 INFO L93 Difference]: Finished difference Result 410 states and 423 transitions. [2022-02-23 20:50:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-23 20:50:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 420 [2022-02-23 20:50:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:42,085 INFO L225 Difference]: With dead ends: 410 [2022-02-23 20:50:42,085 INFO L226 Difference]: Without dead ends: 408 [2022-02-23 20:50:42,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 958 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1857 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=3010, Invalid=6496, Unknown=0, NotChecked=0, Total=9506 [2022-02-23 20:50:42,087 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 217 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:42,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 94 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-23 20:50:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-02-23 20:50:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2022-02-23 20:50:42,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 322 states have (on average 1.0124223602484472) internal successors, (326), 323 states have internal predecessors, (326), 45 states have call successors, (45), 36 states have call predecessors, (45), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-02-23 20:50:42,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 415 transitions. [2022-02-23 20:50:42,124 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 415 transitions. Word has length 420 [2022-02-23 20:50:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:42,124 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 415 transitions. [2022-02-23 20:50:42,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.7254901960784315) internal successors, (241), 48 states have internal predecessors, (241), 43 states have call successors, (47), 4 states have call predecessors, (47), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-02-23 20:50:42,125 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 415 transitions. [2022-02-23 20:50:42,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-02-23 20:50:42,126 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:42,127 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:42,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-02-23 20:50:42,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:42,339 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2013148152, now seen corresponding path program 49 times [2022-02-23 20:50:42,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:42,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628154822] [2022-02-23 20:50:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-02-23 20:50:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:50:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:50:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:50:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:50:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:50:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:50:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:50:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:50:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:50:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:50:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:50:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:50:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:50:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:50:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:50:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:50:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:50:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:50:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:50:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:50:44,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:50:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:50:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:50:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:50:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:50:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:50:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:50:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:50:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:50:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:50:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:50:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:50:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:50:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:50:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:50:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:50:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:50:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:50:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:50:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:50:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:50:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3489 proven. 1845 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-02-23 20:50:44,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:44,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628154822] [2022-02-23 20:50:44,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628154822] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:44,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843858722] [2022-02-23 20:50:44,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:50:44,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:44,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:44,187 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:44,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-23 20:50:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:44,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 86 conjunts are in the unsatisfiable core [2022-02-23 20:50:44,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3772 proven. 1722 refuted. 0 times theorem prover too weak. 3284 trivial. 0 not checked. [2022-02-23 20:50:46,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:47,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 3610 proven. 1722 refuted. 0 times theorem prover too weak. 3446 trivial. 0 not checked. [2022-02-23 20:50:47,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843858722] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:47,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:47,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 86, 86] total 132 [2022-02-23 20:50:47,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237868936] [2022-02-23 20:50:47,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:47,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2022-02-23 20:50:47,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2022-02-23 20:50:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3833, Invalid=13459, Unknown=0, NotChecked=0, Total=17292 [2022-02-23 20:50:47,533 INFO L87 Difference]: Start difference. First operand 403 states and 415 transitions. Second operand has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) [2022-02-23 20:50:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:50:50,599 INFO L93 Difference]: Finished difference Result 754 states and 892 transitions. [2022-02-23 20:50:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-23 20:50:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) Word has length 436 [2022-02-23 20:50:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:50:50,601 INFO L225 Difference]: With dead ends: 754 [2022-02-23 20:50:50,601 INFO L226 Difference]: Without dead ends: 573 [2022-02-23 20:50:50,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1170 GetRequests, 956 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12751 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=10282, Invalid=36158, Unknown=0, NotChecked=0, Total=46440 [2022-02-23 20:50:50,605 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 896 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:50:50,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 158 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-23 20:50:50,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-02-23 20:50:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 405. [2022-02-23 20:50:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 324 states have (on average 1.0123456790123457) internal successors, (328), 325 states have internal predecessors, (328), 45 states have call successors, (45), 36 states have call predecessors, (45), 35 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2022-02-23 20:50:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 417 transitions. [2022-02-23 20:50:50,650 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 417 transitions. Word has length 436 [2022-02-23 20:50:50,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:50:50,650 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 417 transitions. [2022-02-23 20:50:50,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 2.734848484848485) internal successors, (361), 131 states have internal predecessors, (361), 86 states have call successors, (89), 3 states have call predecessors, (89), 2 states have return successors, (87), 86 states have call predecessors, (87), 86 states have call successors, (87) [2022-02-23 20:50:50,651 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 417 transitions. [2022-02-23 20:50:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-02-23 20:50:50,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:50:50,653 INFO L514 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:50:50,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-23 20:50:50,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-02-23 20:50:50,871 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:50:50,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:50:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash -498131109, now seen corresponding path program 50 times [2022-02-23 20:50:50,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:50:50,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088671155] [2022-02-23 20:50:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:50:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:50:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:50:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-02-23 20:50:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:50:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:50:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:50:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:50:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:50:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:50:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:50:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:50:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:50:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:50:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:50:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:50:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:50:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:50:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:50:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:50:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:50:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:50:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:50:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:50:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:50:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:50:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:50:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:50:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:50:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:50:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:50:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:50:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:50:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:50:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:50:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:50:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:50:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:50:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:50:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:50:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:50:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:50:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:50:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:50:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:50:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:50:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 3489 proven. 1929 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-02-23 20:50:52,664 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:50:52,664 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088671155] [2022-02-23 20:50:52,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088671155] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:50:52,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962129987] [2022-02-23 20:50:52,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:50:52,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:50:52,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:50:52,666 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:50:52,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-23 20:50:52,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:50:52,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:50:52,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 88 conjunts are in the unsatisfiable core [2022-02-23 20:50:52,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:50:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-02-23 20:50:54,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:50:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8862 backedges. 1890 proven. 3528 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2022-02-23 20:50:55,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962129987] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:50:55,482 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:50:55,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 47, 47] total 134 [2022-02-23 20:50:55,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137999865] [2022-02-23 20:50:55,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:50:55,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2022-02-23 20:50:55,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:50:55,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2022-02-23 20:50:55,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2932, Invalid=14890, Unknown=0, NotChecked=0, Total=17822 [2022-02-23 20:50:55,485 INFO L87 Difference]: Start difference. First operand 405 states and 417 transitions. Second operand has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-02-23 20:51:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:01,281 INFO L93 Difference]: Finished difference Result 767 states and 909 transitions. [2022-02-23 20:51:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-02-23 20:51:01,281 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) Word has length 438 [2022-02-23 20:51:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:01,283 INFO L225 Difference]: With dead ends: 767 [2022-02-23 20:51:01,283 INFO L226 Difference]: Without dead ends: 588 [2022-02-23 20:51:01,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32884 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=15663, Invalid=78279, Unknown=0, NotChecked=0, Total=93942 [2022-02-23 20:51:01,288 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 1301 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 1131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 6486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1131 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:01,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1302 Valid, 215 Invalid, 6486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1131 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-23 20:51:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-02-23 20:51:01,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 415. [2022-02-23 20:51:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 332 states have (on average 1.0120481927710843) internal successors, (336), 333 states have internal predecessors, (336), 46 states have call successors, (46), 37 states have call predecessors, (46), 36 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2022-02-23 20:51:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 427 transitions. [2022-02-23 20:51:01,315 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 427 transitions. Word has length 438 [2022-02-23 20:51:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:01,315 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 427 transitions. [2022-02-23 20:51:01,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 3.3507462686567164) internal successors, (449), 132 states have internal predecessors, (449), 87 states have call successors, (89), 4 states have call predecessors, (89), 1 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-02-23 20:51:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 427 transitions. [2022-02-23 20:51:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-02-23 20:51:01,318 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:01,318 INFO L514 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:01,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-23 20:51:01,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-02-23 20:51:01,536 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:01,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:01,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2042736274, now seen corresponding path program 51 times [2022-02-23 20:51:01,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:01,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584915098] [2022-02-23 20:51:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:01,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-02-23 20:51:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:51:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:51:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:51:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:51:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:51:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:51:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:51:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:51:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:51:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:51:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:51:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:51:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:51:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:51:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:51:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:51:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:51:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:51:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:51:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:51:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:51:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:51:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:51:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:51:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:51:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:51:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:51:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:51:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:51:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:51:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:51:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:51:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:51:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:51:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:51:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:51:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:51:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:51:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:51:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:51:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:51:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:51:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-02-23 20:51:03,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:03,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584915098] [2022-02-23 20:51:03,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584915098] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:03,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003602822] [2022-02-23 20:51:03,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:51:03,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:03,433 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:03,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-23 20:51:03,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2022-02-23 20:51:03,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:51:03,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 90 conjunts are in the unsatisfiable core [2022-02-23 20:51:03,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:05,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-02-23 20:51:05,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2022-02-23 20:51:06,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003602822] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:06,401 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:06,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 48, 48] total 137 [2022-02-23 20:51:06,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683952025] [2022-02-23 20:51:06,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:06,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-02-23 20:51:06,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:06,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-02-23 20:51:06,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3066, Invalid=15566, Unknown=0, NotChecked=0, Total=18632 [2022-02-23 20:51:06,405 INFO L87 Difference]: Start difference. First operand 415 states and 427 transitions. Second operand has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-02-23 20:51:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:12,522 INFO L93 Difference]: Finished difference Result 785 states and 930 transitions. [2022-02-23 20:51:12,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-02-23 20:51:12,522 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Word has length 448 [2022-02-23 20:51:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:12,524 INFO L225 Difference]: With dead ends: 785 [2022-02-23 20:51:12,524 INFO L226 Difference]: Without dead ends: 602 [2022-02-23 20:51:12,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1296 GetRequests, 983 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34441 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=16379, Invalid=81903, Unknown=0, NotChecked=0, Total=98282 [2022-02-23 20:51:12,530 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 1406 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5344 mSolverCounterSat, 1325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 6669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1325 IncrementalHoareTripleChecker+Valid, 5344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:12,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1407 Valid, 238 Invalid, 6669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1325 Valid, 5344 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-23 20:51:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-02-23 20:51:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 425. [2022-02-23 20:51:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 340 states have (on average 1.011764705882353) internal successors, (344), 341 states have internal predecessors, (344), 47 states have call successors, (47), 38 states have call predecessors, (47), 37 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-02-23 20:51:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2022-02-23 20:51:12,558 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 448 [2022-02-23 20:51:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:12,558 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2022-02-23 20:51:12,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.3503649635036497) internal successors, (459), 135 states have internal predecessors, (459), 89 states have call successors, (91), 4 states have call predecessors, (91), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-02-23 20:51:12,558 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2022-02-23 20:51:12,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-02-23 20:51:12,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:12,560 INFO L514 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:12,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-23 20:51:12,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:12,779 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:12,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1276827895, now seen corresponding path program 52 times [2022-02-23 20:51:12,779 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:12,779 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508151468] [2022-02-23 20:51:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-02-23 20:51:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:51:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:51:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:51:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:51:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:51:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:51:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:51:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:51:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:51:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:51:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:51:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:51:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:51:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:51:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:51:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:51:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:51:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:51:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:51:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:51:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:51:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:51:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:51:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:51:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:51:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:51:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:51:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:51:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:51:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:51:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:51:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:51:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:51:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:51:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:51:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:51:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:51:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:51:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:51:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:51:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:51:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:51:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:51:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:14,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-02-23 20:51:14,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:14,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508151468] [2022-02-23 20:51:14,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508151468] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:14,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985735816] [2022-02-23 20:51:14,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:51:14,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:14,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:14,767 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:14,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-23 20:51:14,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:51:14,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:51:14,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 92 conjunts are in the unsatisfiable core [2022-02-23 20:51:14,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-02-23 20:51:17,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2022-02-23 20:51:17,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985735816] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:17,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:17,822 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 49, 49] total 140 [2022-02-23 20:51:17,822 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136451323] [2022-02-23 20:51:17,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:17,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-02-23 20:51:17,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-02-23 20:51:17,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3203, Invalid=16257, Unknown=0, NotChecked=0, Total=19460 [2022-02-23 20:51:17,825 INFO L87 Difference]: Start difference. First operand 425 states and 437 transitions. Second operand has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-02-23 20:51:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:24,410 INFO L93 Difference]: Finished difference Result 803 states and 951 transitions. [2022-02-23 20:51:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-02-23 20:51:24,410 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Word has length 458 [2022-02-23 20:51:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:24,412 INFO L225 Difference]: With dead ends: 803 [2022-02-23 20:51:24,412 INFO L226 Difference]: Without dead ends: 616 [2022-02-23 20:51:24,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1325 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36034 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=17111, Invalid=85609, Unknown=0, NotChecked=0, Total=102720 [2022-02-23 20:51:24,419 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1269 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 6674 mSolverCounterSat, 1081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 7755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1081 IncrementalHoareTripleChecker+Valid, 6674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:24,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 256 Invalid, 7755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1081 Valid, 6674 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-23 20:51:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-02-23 20:51:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 435. [2022-02-23 20:51:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 348 states have (on average 1.0114942528735633) internal successors, (352), 349 states have internal predecessors, (352), 48 states have call successors, (48), 39 states have call predecessors, (48), 38 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-02-23 20:51:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 447 transitions. [2022-02-23 20:51:24,472 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 447 transitions. Word has length 458 [2022-02-23 20:51:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:24,472 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 447 transitions. [2022-02-23 20:51:24,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 3.35) internal successors, (469), 138 states have internal predecessors, (469), 91 states have call successors, (93), 4 states have call predecessors, (93), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2022-02-23 20:51:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 447 transitions. [2022-02-23 20:51:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-02-23 20:51:24,475 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:24,475 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:24,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-23 20:51:24,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-23 20:51:24,683 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:24,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:24,684 INFO L85 PathProgramCache]: Analyzing trace with hash -197855040, now seen corresponding path program 53 times [2022-02-23 20:51:24,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:24,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374571431] [2022-02-23 20:51:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:24,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-02-23 20:51:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:51:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:51:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:51:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:51:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:51:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:51:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:51:26,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:51:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:51:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:51:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:51:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:51:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:51:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:51:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:51:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:51:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:51:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:51:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:51:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:51:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:51:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:51:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:51:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:51:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:51:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:51:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:51:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:51:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:51:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:51:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:51:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:51:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:51:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:51:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:51:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:51:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:51:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:51:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:51:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:51:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:51:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:51:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:51:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:51:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-23 20:51:26,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:26,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374571431] [2022-02-23 20:51:26,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374571431] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:26,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062115136] [2022-02-23 20:51:26,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:51:26,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:26,768 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:26,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-23 20:51:26,972 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2022-02-23 20:51:26,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:51:26,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 94 conjunts are in the unsatisfiable core [2022-02-23 20:51:26,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-23 20:51:30,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-23 20:51:30,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062115136] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:30,640 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:30,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94, 94] total 143 [2022-02-23 20:51:30,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080559282] [2022-02-23 20:51:30,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:30,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2022-02-23 20:51:30,641 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:30,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2022-02-23 20:51:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4517, Invalid=15789, Unknown=0, NotChecked=0, Total=20306 [2022-02-23 20:51:30,643 INFO L87 Difference]: Start difference. First operand 435 states and 447 transitions. Second operand has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-02-23 20:51:34,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:34,279 INFO L93 Difference]: Finished difference Result 812 states and 962 transitions. [2022-02-23 20:51:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-23 20:51:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 468 [2022-02-23 20:51:34,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:34,281 INFO L225 Difference]: With dead ends: 812 [2022-02-23 20:51:34,281 INFO L226 Difference]: Without dead ends: 621 [2022-02-23 20:51:34,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1259 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15070 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=12224, Invalid=42766, Unknown=0, NotChecked=0, Total=54990 [2022-02-23 20:51:34,286 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 1199 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 873 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 873 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:34,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 141 Invalid, 3366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [873 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-23 20:51:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-02-23 20:51:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 437. [2022-02-23 20:51:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 350 states have (on average 1.0114285714285713) internal successors, (354), 351 states have internal predecessors, (354), 48 states have call successors, (48), 39 states have call predecessors, (48), 38 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2022-02-23 20:51:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 449 transitions. [2022-02-23 20:51:34,339 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 449 transitions. Word has length 468 [2022-02-23 20:51:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:34,339 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 449 transitions. [2022-02-23 20:51:34,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.6923076923076925) internal successors, (385), 142 states have internal predecessors, (385), 93 states have call successors, (95), 3 states have call predecessors, (95), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2022-02-23 20:51:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 449 transitions. [2022-02-23 20:51:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2022-02-23 20:51:34,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:34,342 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:34,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-23 20:51:34,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-23 20:51:34,542 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash -762865629, now seen corresponding path program 54 times [2022-02-23 20:51:34,543 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:34,543 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444728164] [2022-02-23 20:51:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:51:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:51:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:51:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:51:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:51:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:51:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:51:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:51:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:51:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:51:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:51:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:51:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:51:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:51:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:51:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:51:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:51:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:51:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:51:35,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:51:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:51:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:51:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:51:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:51:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:51:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:51:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:51:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:51:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:51:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:51:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:51:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:51:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:51:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:51:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:51:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:51:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:51:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:51:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:51:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:51:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:51:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:51:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:51:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:51:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:51:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-23 20:51:35,421 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:35,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444728164] [2022-02-23 20:51:35,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444728164] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:35,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508497610] [2022-02-23 20:51:35,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:51:35,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:35,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:35,422 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:35,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-23 20:51:35,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2022-02-23 20:51:35,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:51:35,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 95 conjunts are in the unsatisfiable core [2022-02-23 20:51:35,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-23 20:51:36,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2022-02-23 20:51:36,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508497610] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:36,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:36,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51, 51] total 56 [2022-02-23 20:51:36,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564420844] [2022-02-23 20:51:36,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:36,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-23 20:51:36,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-23 20:51:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1241, Invalid=1839, Unknown=0, NotChecked=0, Total=3080 [2022-02-23 20:51:36,835 INFO L87 Difference]: Start difference. First operand 437 states and 449 transitions. Second operand has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-02-23 20:51:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:38,031 INFO L93 Difference]: Finished difference Result 456 states and 470 transitions. [2022-02-23 20:51:38,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-23 20:51:38,032 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 470 [2022-02-23 20:51:38,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:38,033 INFO L225 Difference]: With dead ends: 456 [2022-02-23 20:51:38,033 INFO L226 Difference]: Without dead ends: 454 [2022-02-23 20:51:38,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1180 GetRequests, 1073 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3715, Invalid=7841, Unknown=0, NotChecked=0, Total=11556 [2022-02-23 20:51:38,035 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 236 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:38,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 104 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 20:51:38,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-02-23 20:51:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 449. [2022-02-23 20:51:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 359 states have (on average 1.011142061281337) internal successors, (363), 360 states have internal predecessors, (363), 50 states have call successors, (50), 40 states have call predecessors, (50), 39 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-02-23 20:51:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 462 transitions. [2022-02-23 20:51:38,064 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 462 transitions. Word has length 470 [2022-02-23 20:51:38,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:38,065 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 462 transitions. [2022-02-23 20:51:38,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 4.75) internal successors, (266), 53 states have internal predecessors, (266), 48 states have call successors, (52), 4 states have call predecessors, (52), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-02-23 20:51:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 462 transitions. [2022-02-23 20:51:38,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-02-23 20:51:38,067 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:38,067 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:38,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-23 20:51:38,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:38,297 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:38,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash 119454539, now seen corresponding path program 55 times [2022-02-23 20:51:38,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:38,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363902687] [2022-02-23 20:51:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-02-23 20:51:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:51:40,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:51:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:51:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:51:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:51:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:51:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:51:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:51:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:51:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:51:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:51:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:51:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:51:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:51:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:51:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:51:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:51:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:51:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:51:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:51:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:51:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:51:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:51:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:51:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:51:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:51:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:51:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:51:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:51:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:51:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:51:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:51:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:51:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:51:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:51:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:51:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:51:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:51:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:51:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:51:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:51:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:51:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:51:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:51:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:51:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:51:40,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-02-23 20:51:40,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:40,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363902687] [2022-02-23 20:51:40,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363902687] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:40,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266577159] [2022-02-23 20:51:40,430 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:51:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:40,431 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:40,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-23 20:51:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:40,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 96 conjunts are in the unsatisfiable core [2022-02-23 20:51:40,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:43,723 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2022-02-23 20:51:43,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2022-02-23 20:51:44,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266577159] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:44,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:44,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 96, 96] total 147 [2022-02-23 20:51:44,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44446930] [2022-02-23 20:51:44,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:44,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2022-02-23 20:51:44,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:44,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2022-02-23 20:51:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4758, Invalid=16704, Unknown=0, NotChecked=0, Total=21462 [2022-02-23 20:51:44,412 INFO L87 Difference]: Start difference. First operand 449 states and 462 transitions. Second operand has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2022-02-23 20:51:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:51:48,228 INFO L93 Difference]: Finished difference Result 840 states and 994 transitions. [2022-02-23 20:51:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-23 20:51:48,229 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) Word has length 486 [2022-02-23 20:51:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:51:48,231 INFO L225 Difference]: With dead ends: 840 [2022-02-23 20:51:48,231 INFO L226 Difference]: Without dead ends: 639 [2022-02-23 20:51:48,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1066 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15916 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=12797, Invalid=45043, Unknown=0, NotChecked=0, Total=57840 [2022-02-23 20:51:48,253 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 1060 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:51:48,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 163 Invalid, 3561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 2798 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-23 20:51:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-02-23 20:51:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 451. [2022-02-23 20:51:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 361 states have (on average 1.0110803324099722) internal successors, (365), 362 states have internal predecessors, (365), 50 states have call successors, (50), 40 states have call predecessors, (50), 39 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2022-02-23 20:51:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 464 transitions. [2022-02-23 20:51:48,284 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 464 transitions. Word has length 486 [2022-02-23 20:51:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:51:48,284 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 464 transitions. [2022-02-23 20:51:48,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 147 states have (on average 2.727891156462585) internal successors, (401), 146 states have internal predecessors, (401), 96 states have call successors, (99), 3 states have call predecessors, (99), 2 states have return successors, (97), 96 states have call predecessors, (97), 96 states have call successors, (97) [2022-02-23 20:51:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 464 transitions. [2022-02-23 20:51:48,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-02-23 20:51:48,287 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:51:48,287 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:51:48,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-23 20:51:48,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:48,488 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:51:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:51:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash 277571566, now seen corresponding path program 56 times [2022-02-23 20:51:48,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:51:48,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021206049] [2022-02-23 20:51:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:51:48,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:51:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:51:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-02-23 20:51:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:51:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:51:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:51:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:51:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:51:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:51:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:51:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:51:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:51:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:51:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:51:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:51:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:51:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:51:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:51:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:51:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:51:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:51:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:51:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:51:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:51:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:51:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:51:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:51:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:51:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:51:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:51:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:51:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:51:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:51:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:51:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:51:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:51:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:51:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:51:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:51:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:51:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:51:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:51:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:51:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:51:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:51:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:51:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:51:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:51:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:51:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-02-23 20:51:50,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:51:50,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021206049] [2022-02-23 20:51:50,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021206049] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:51:50,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913138160] [2022-02-23 20:51:50,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:51:50,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:51:50,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:51:50,739 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:51:50,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-23 20:51:50,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:51:50,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:51:50,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 98 conjunts are in the unsatisfiable core [2022-02-23 20:51:50,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:51:53,417 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-02-23 20:51:53,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:51:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2022-02-23 20:51:54,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913138160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:51:54,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:51:54,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 52, 52] total 149 [2022-02-23 20:51:54,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292553159] [2022-02-23 20:51:54,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:51:54,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-02-23 20:51:54,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:51:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-02-23 20:51:54,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3632, Invalid=18420, Unknown=0, NotChecked=0, Total=22052 [2022-02-23 20:51:54,067 INFO L87 Difference]: Start difference. First operand 451 states and 464 transitions. Second operand has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-02-23 20:52:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:52:00,804 INFO L93 Difference]: Finished difference Result 853 states and 1011 transitions. [2022-02-23 20:52:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-02-23 20:52:00,804 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Word has length 488 [2022-02-23 20:52:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:52:00,806 INFO L225 Difference]: With dead ends: 853 [2022-02-23 20:52:00,806 INFO L226 Difference]: Without dead ends: 654 [2022-02-23 20:52:00,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1412 GetRequests, 1071 SyntacticMatches, 1 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41029 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=19403, Invalid=97219, Unknown=0, NotChecked=0, Total=116622 [2022-02-23 20:52:00,814 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1522 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 5550 mSolverCounterSat, 1339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 6889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1339 IncrementalHoareTripleChecker+Valid, 5550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-23 20:52:00,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 220 Invalid, 6889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1339 Valid, 5550 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-23 20:52:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-02-23 20:52:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 461. [2022-02-23 20:52:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 369 states have (on average 1.010840108401084) internal successors, (373), 370 states have internal predecessors, (373), 51 states have call successors, (51), 41 states have call predecessors, (51), 40 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-02-23 20:52:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 474 transitions. [2022-02-23 20:52:00,847 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 474 transitions. Word has length 488 [2022-02-23 20:52:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:52:00,847 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 474 transitions. [2022-02-23 20:52:00,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 3.348993288590604) internal successors, (499), 147 states have internal predecessors, (499), 97 states have call successors, (99), 4 states have call predecessors, (99), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2022-02-23 20:52:00,847 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 474 transitions. [2022-02-23 20:52:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2022-02-23 20:52:00,850 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:52:00,850 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:52:00,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-02-23 20:52:01,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:01,050 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:52:01,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:52:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1808590181, now seen corresponding path program 57 times [2022-02-23 20:52:01,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:52:01,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305825037] [2022-02-23 20:52:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:52:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:52:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:52:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-02-23 20:52:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:52:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:52:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:52:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:52:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:52:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:52:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:52:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:52:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:52:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:52:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:52:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:52:03,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:52:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:52:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:52:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:52:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:52:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:52:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:52:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:52:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:52:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:52:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:52:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:52:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:52:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:52:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:52:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:52:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:52:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:52:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:52:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:52:03,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:52:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:52:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:52:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:52:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:52:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:52:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:52:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:52:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:52:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:52:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:52:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:52:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:52:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:52:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:52:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-02-23 20:52:03,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:52:03,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305825037] [2022-02-23 20:52:03,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305825037] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:52:03,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723276737] [2022-02-23 20:52:03,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:52:03,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:03,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:52:03,339 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:52:03,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-23 20:52:03,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2022-02-23 20:52:03,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:52:03,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 100 conjunts are in the unsatisfiable core [2022-02-23 20:52:03,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:52:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-02-23 20:52:06,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:52:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2022-02-23 20:52:06,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723276737] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:52:06,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:52:06,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 53, 53] total 152 [2022-02-23 20:52:06,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966502623] [2022-02-23 20:52:06,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:52:06,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2022-02-23 20:52:06,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:52:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2022-02-23 20:52:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=19171, Unknown=0, NotChecked=0, Total=22952 [2022-02-23 20:52:06,833 INFO L87 Difference]: Start difference. First operand 461 states and 474 transitions. Second operand has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-02-23 20:52:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:52:13,913 INFO L93 Difference]: Finished difference Result 871 states and 1032 transitions. [2022-02-23 20:52:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-02-23 20:52:13,913 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Word has length 498 [2022-02-23 20:52:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:52:13,915 INFO L225 Difference]: With dead ends: 871 [2022-02-23 20:52:13,915 INFO L226 Difference]: Without dead ends: 668 [2022-02-23 20:52:13,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1441 GetRequests, 1093 SyntacticMatches, 1 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42766 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=20199, Invalid=101253, Unknown=0, NotChecked=0, Total=121452 [2022-02-23 20:52:13,923 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 1531 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6499 mSolverCounterSat, 1359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 7858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1359 IncrementalHoareTripleChecker+Valid, 6499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:52:13,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 243 Invalid, 7858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1359 Valid, 6499 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-23 20:52:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-02-23 20:52:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 471. [2022-02-23 20:52:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 377 states have (on average 1.0106100795755968) internal successors, (381), 378 states have internal predecessors, (381), 52 states have call successors, (52), 42 states have call predecessors, (52), 41 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-02-23 20:52:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 484 transitions. [2022-02-23 20:52:13,955 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 484 transitions. Word has length 498 [2022-02-23 20:52:13,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:52:13,956 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 484 transitions. [2022-02-23 20:52:13,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 3.348684210526316) internal successors, (509), 150 states have internal predecessors, (509), 99 states have call successors, (101), 4 states have call predecessors, (101), 1 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-02-23 20:52:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 484 transitions. [2022-02-23 20:52:13,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2022-02-23 20:52:13,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:52:13,973 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:52:13,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-23 20:52:14,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-23 20:52:14,173 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:52:14,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:52:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1984922596, now seen corresponding path program 58 times [2022-02-23 20:52:14,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:52:14,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904746122] [2022-02-23 20:52:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:52:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:52:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:52:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-02-23 20:52:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:52:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:52:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:52:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:52:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:52:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:52:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:52:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:52:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:52:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:52:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:52:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:52:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:52:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:52:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:52:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:52:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:52:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:52:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:52:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:52:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:52:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:52:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:52:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:52:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:52:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:52:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:52:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:52:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:52:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:52:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:52:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:52:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:52:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:52:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:52:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:52:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:52:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:52:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:52:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:52:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:52:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:52:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:52:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:52:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:52:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:52:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:52:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:52:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4756 proven. 2594 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-02-23 20:52:16,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:52:16,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904746122] [2022-02-23 20:52:16,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904746122] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:52:16,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979413516] [2022-02-23 20:52:16,540 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:52:16,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:16,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:52:16,541 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:52:16,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-23 20:52:16,707 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:52:16,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:52:16,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 102 conjunts are in the unsatisfiable core [2022-02-23 20:52:16,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:52:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-02-23 20:52:19,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:52:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2022-02-23 20:52:20,067 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979413516] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:52:20,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:52:20,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 54, 54] total 155 [2022-02-23 20:52:20,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149543358] [2022-02-23 20:52:20,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:52:20,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-02-23 20:52:20,068 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:52:20,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-02-23 20:52:20,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3933, Invalid=19937, Unknown=0, NotChecked=0, Total=23870 [2022-02-23 20:52:20,070 INFO L87 Difference]: Start difference. First operand 471 states and 484 transitions. Second operand has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-02-23 20:52:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:52:27,445 INFO L93 Difference]: Finished difference Result 889 states and 1053 transitions. [2022-02-23 20:52:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2022-02-23 20:52:27,446 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Word has length 508 [2022-02-23 20:52:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:52:27,448 INFO L225 Difference]: With dead ends: 889 [2022-02-23 20:52:27,448 INFO L226 Difference]: Without dead ends: 682 [2022-02-23 20:52:27,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1115 SyntacticMatches, 1 SemanticMatches, 354 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44539 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=21011, Invalid=105369, Unknown=0, NotChecked=0, Total=126380 [2022-02-23 20:52:27,453 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1570 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 7005 mSolverCounterSat, 1392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 8397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1392 IncrementalHoareTripleChecker+Valid, 7005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:52:27,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 266 Invalid, 8397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1392 Valid, 7005 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-23 20:52:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-02-23 20:52:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 481. [2022-02-23 20:52:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 385 states have (on average 1.0103896103896104) internal successors, (389), 386 states have internal predecessors, (389), 53 states have call successors, (53), 43 states have call predecessors, (53), 42 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-02-23 20:52:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 494 transitions. [2022-02-23 20:52:27,487 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 494 transitions. Word has length 508 [2022-02-23 20:52:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:52:27,487 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 494 transitions. [2022-02-23 20:52:27,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 3.3483870967741933) internal successors, (519), 153 states have internal predecessors, (519), 101 states have call successors, (103), 4 states have call predecessors, (103), 1 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2022-02-23 20:52:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 494 transitions. [2022-02-23 20:52:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-02-23 20:52:27,490 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:52:27,490 INFO L514 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:52:27,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-23 20:52:27,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-02-23 20:52:27,691 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:52:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:52:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1074422765, now seen corresponding path program 59 times [2022-02-23 20:52:27,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:52:27,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652118505] [2022-02-23 20:52:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:52:27,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:52:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:52:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-02-23 20:52:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:52:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:52:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:52:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:52:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:52:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:52:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:52:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:52:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:52:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:52:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:52:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:52:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:52:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:52:30,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:52:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:52:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:52:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:52:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:52:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:52:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:52:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:52:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:52:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:52:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:52:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:52:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:52:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:52:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:52:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:52:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:52:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:52:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:52:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:52:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:52:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:52:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:52:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:52:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:52:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:52:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:52:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:52:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:52:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:52:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:52:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:52:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:52:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:52:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:52:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 4953 proven. 2697 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-23 20:52:30,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:52:30,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652118505] [2022-02-23 20:52:30,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652118505] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:52:30,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773858546] [2022-02-23 20:52:30,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:52:30,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:30,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:52:30,133 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:52:30,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-23 20:52:30,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2022-02-23 20:52:30,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:52:30,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 104 conjunts are in the unsatisfiable core [2022-02-23 20:52:30,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:52:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-23 20:52:33,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:52:34,584 INFO L134 CoverageAnalysis]: Checked inductivity of 12550 backedges. 5100 proven. 2550 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-23 20:52:34,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773858546] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:52:34,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:52:34,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 158 [2022-02-23 20:52:34,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680947367] [2022-02-23 20:52:34,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:52:34,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2022-02-23 20:52:34,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:52:34,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2022-02-23 20:52:34,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5517, Invalid=19289, Unknown=0, NotChecked=0, Total=24806 [2022-02-23 20:52:34,589 INFO L87 Difference]: Start difference. First operand 481 states and 494 transitions. Second operand has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-02-23 20:52:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:52:38,777 INFO L93 Difference]: Finished difference Result 898 states and 1064 transitions. [2022-02-23 20:52:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-23 20:52:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) Word has length 518 [2022-02-23 20:52:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:52:38,779 INFO L225 Difference]: With dead ends: 898 [2022-02-23 20:52:38,779 INFO L226 Difference]: Without dead ends: 687 [2022-02-23 20:52:38,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1394 GetRequests, 1136 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18495 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=14954, Invalid=52386, Unknown=0, NotChecked=0, Total=67340 [2022-02-23 20:52:38,783 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1036 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3200 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 3200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-23 20:52:38,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 166 Invalid, 3813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 3200 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-23 20:52:38,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-02-23 20:52:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 483. [2022-02-23 20:52:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 387 states have (on average 1.0103359173126616) internal successors, (391), 388 states have internal predecessors, (391), 53 states have call successors, (53), 43 states have call predecessors, (53), 42 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-02-23 20:52:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 496 transitions. [2022-02-23 20:52:38,818 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 496 transitions. Word has length 518 [2022-02-23 20:52:38,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:52:38,818 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 496 transitions. [2022-02-23 20:52:38,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.689873417721519) internal successors, (425), 157 states have internal predecessors, (425), 103 states have call successors, (105), 3 states have call predecessors, (105), 1 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-02-23 20:52:38,818 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 496 transitions. [2022-02-23 20:52:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-02-23 20:52:38,821 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:52:38,821 INFO L514 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:52:38,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-02-23 20:52:39,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-02-23 20:52:39,021 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:52:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:52:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash 739179702, now seen corresponding path program 60 times [2022-02-23 20:52:39,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:52:39,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507484774] [2022-02-23 20:52:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:52:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:52:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:52:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:52:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:52:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:52:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:52:40,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:52:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:52:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:52:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:52:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:52:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:52:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:52:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:52:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:52:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:52:40,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:52:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:52:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:52:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:52:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:52:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:52:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:52:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:52:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:52:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:52:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:52:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:52:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:52:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:52:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:52:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:52:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:52:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:52:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:52:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:52:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:52:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:52:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:52:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:52:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:52:40,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:52:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:52:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:52:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:52:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:52:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:52:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:52:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:52:40,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:52:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:52:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:52:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2650 proven. 5102 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-23 20:52:40,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:52:40,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507484774] [2022-02-23 20:52:40,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507484774] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:52:40,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289202163] [2022-02-23 20:52:40,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:52:40,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:40,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:52:40,078 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:52:40,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-23 20:52:40,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2022-02-23 20:52:40,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:52:40,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 105 conjunts are in the unsatisfiable core [2022-02-23 20:52:40,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:52:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-23 20:52:40,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:52:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12652 backedges. 2752 proven. 5000 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-02-23 20:52:41,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289202163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:52:41,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:52:41,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56, 56] total 61 [2022-02-23 20:52:41,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363246424] [2022-02-23 20:52:41,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:52:41,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-02-23 20:52:41,645 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:52:41,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-02-23 20:52:41,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1501, Invalid=2159, Unknown=0, NotChecked=0, Total=3660 [2022-02-23 20:52:41,646 INFO L87 Difference]: Start difference. First operand 483 states and 496 transitions. Second operand has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-02-23 20:52:43,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:52:43,021 INFO L93 Difference]: Finished difference Result 502 states and 517 transitions. [2022-02-23 20:52:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-23 20:52:43,022 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 520 [2022-02-23 20:52:43,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:52:43,023 INFO L225 Difference]: With dead ends: 502 [2022-02-23 20:52:43,023 INFO L226 Difference]: Without dead ends: 500 [2022-02-23 20:52:43,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1305 GetRequests, 1188 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2562 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4495, Invalid=9311, Unknown=0, NotChecked=0, Total=13806 [2022-02-23 20:52:43,025 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 255 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:52:43,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 124 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-23 20:52:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-02-23 20:52:43,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 495. [2022-02-23 20:52:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 396 states have (on average 1.0101010101010102) internal successors, (400), 397 states have internal predecessors, (400), 55 states have call successors, (55), 44 states have call predecessors, (55), 43 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-02-23 20:52:43,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 509 transitions. [2022-02-23 20:52:43,061 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 509 transitions. Word has length 520 [2022-02-23 20:52:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:52:43,062 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 509 transitions. [2022-02-23 20:52:43,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 4.770491803278689) internal successors, (291), 58 states have internal predecessors, (291), 53 states have call successors, (57), 4 states have call predecessors, (57), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-02-23 20:52:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 509 transitions. [2022-02-23 20:52:43,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2022-02-23 20:52:43,064 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:52:43,064 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:52:43,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-02-23 20:52:43,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:43,279 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:52:43,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:52:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash 518560222, now seen corresponding path program 61 times [2022-02-23 20:52:43,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:52:43,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477636888] [2022-02-23 20:52:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:52:43,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:52:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:52:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-02-23 20:52:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:52:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:52:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:52:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:52:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:52:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:52:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:52:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:52:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:52:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:52:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:52:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:52:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:52:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:52:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:52:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:52:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:52:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:52:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:52:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:52:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:52:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:52:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:52:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:52:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:52:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:52:45,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:52:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:52:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:52:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:52:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:52:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:52:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:52:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:52:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:52:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:52:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:52:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:52:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:52:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:52:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:52:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:52:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:52:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:52:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:52:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:52:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:52:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:52:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:52:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:52:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:52:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5359 proven. 2805 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-02-23 20:52:45,857 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:52:45,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477636888] [2022-02-23 20:52:45,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477636888] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:52:45,857 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134580352] [2022-02-23 20:52:45,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:52:45,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:45,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:52:45,858 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:52:45,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-23 20:52:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:46,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 106 conjunts are in the unsatisfiable core [2022-02-23 20:52:46,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:52:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5712 proven. 2652 refuted. 0 times theorem prover too weak. 5104 trivial. 0 not checked. [2022-02-23 20:52:49,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:52:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 13468 backedges. 5510 proven. 2652 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-02-23 20:52:50,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134580352] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:52:50,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:52:50,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 106, 106] total 162 [2022-02-23 20:52:50,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389657787] [2022-02-23 20:52:50,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:52:50,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2022-02-23 20:52:50,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:52:50,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2022-02-23 20:52:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5783, Invalid=20299, Unknown=0, NotChecked=0, Total=26082 [2022-02-23 20:52:50,414 INFO L87 Difference]: Start difference. First operand 495 states and 509 transitions. Second operand has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2022-02-23 20:52:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:52:54,891 INFO L93 Difference]: Finished difference Result 926 states and 1096 transitions. [2022-02-23 20:52:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-23 20:52:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) Word has length 536 [2022-02-23 20:52:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:52:54,893 INFO L225 Difference]: With dead ends: 926 [2022-02-23 20:52:54,893 INFO L226 Difference]: Without dead ends: 705 [2022-02-23 20:52:54,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1440 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19431 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=15587, Invalid=54903, Unknown=0, NotChecked=0, Total=70490 [2022-02-23 20:52:54,898 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 1116 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 4167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:52:54,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 188 Invalid, 4167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 20:52:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-02-23 20:52:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 497. [2022-02-23 20:52:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 398 states have (on average 1.0100502512562815) internal successors, (402), 399 states have internal predecessors, (402), 55 states have call successors, (55), 44 states have call predecessors, (55), 43 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-02-23 20:52:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 511 transitions. [2022-02-23 20:52:54,955 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 511 transitions. Word has length 536 [2022-02-23 20:52:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:52:54,955 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 511 transitions. [2022-02-23 20:52:54,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 162 states have (on average 2.7222222222222223) internal successors, (441), 161 states have internal predecessors, (441), 106 states have call successors, (109), 3 states have call predecessors, (109), 2 states have return successors, (107), 106 states have call predecessors, (107), 106 states have call successors, (107) [2022-02-23 20:52:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 511 transitions. [2022-02-23 20:52:54,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2022-02-23 20:52:54,958 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:52:54,958 INFO L514 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:52:54,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-23 20:52:55,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:55,159 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:52:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:52:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash -286902335, now seen corresponding path program 62 times [2022-02-23 20:52:55,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:52:55,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326361634] [2022-02-23 20:52:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:52:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:52:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:52:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-02-23 20:52:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:52:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:52:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:52:57,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:52:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:52:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:52:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:52:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:52:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:52:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:52:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:52:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:52:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:52:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:52:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:52:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:52:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:52:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:52:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:52:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:52:57,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:52:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:52:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:52:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:52:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:52:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:52:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:52:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:52:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:52:57,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:52:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:52:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:52:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:52:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:52:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:52:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:52:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:52:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:52:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:52:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:52:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:52:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:52:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:52:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:52:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:52:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:52:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-02-23 20:52:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-02-23 20:52:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-02-23 20:52:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-02-23 20:52:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-02-23 20:52:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:52:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 5359 proven. 2909 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-02-23 20:52:57,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:52:57,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326361634] [2022-02-23 20:52:57,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326361634] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:52:57,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362967113] [2022-02-23 20:52:57,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:52:57,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:52:57,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:52:57,787 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:52:57,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-23 20:52:57,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:52:57,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:52:57,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 108 conjunts are in the unsatisfiable core [2022-02-23 20:52:57,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:53:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-02-23 20:53:00,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:53:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 2860 proven. 5408 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2022-02-23 20:53:01,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362967113] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:53:01,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:53:01,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 57, 57] total 164 [2022-02-23 20:53:01,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633255566] [2022-02-23 20:53:01,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:53:01,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2022-02-23 20:53:01,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:01,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2022-02-23 20:53:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4407, Invalid=22325, Unknown=0, NotChecked=0, Total=26732 [2022-02-23 20:53:01,639 INFO L87 Difference]: Start difference. First operand 497 states and 511 transitions. Second operand has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2022-02-23 20:53:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:09,580 INFO L93 Difference]: Finished difference Result 939 states and 1113 transitions. [2022-02-23 20:53:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2022-02-23 20:53:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) Word has length 538 [2022-02-23 20:53:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:09,582 INFO L225 Difference]: With dead ends: 939 [2022-02-23 20:53:09,582 INFO L226 Difference]: Without dead ends: 720 [2022-02-23 20:53:09,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1181 SyntacticMatches, 1 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50074 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=23543, Invalid=118209, Unknown=0, NotChecked=0, Total=141752 [2022-02-23 20:53:09,587 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 1795 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6601 mSolverCounterSat, 1546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 8147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1546 IncrementalHoareTripleChecker+Valid, 6601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:09,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 255 Invalid, 8147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1546 Valid, 6601 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-23 20:53:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-02-23 20:53:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 507. [2022-02-23 20:53:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 406 states have (on average 1.0098522167487685) internal successors, (410), 407 states have internal predecessors, (410), 56 states have call successors, (56), 45 states have call predecessors, (56), 44 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-02-23 20:53:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 521 transitions. [2022-02-23 20:53:09,624 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 521 transitions. Word has length 538 [2022-02-23 20:53:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:09,624 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 521 transitions. [2022-02-23 20:53:09,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.347560975609756) internal successors, (549), 162 states have internal predecessors, (549), 107 states have call successors, (109), 4 states have call predecessors, (109), 1 states have return successors, (105), 105 states have call predecessors, (105), 105 states have call successors, (105) [2022-02-23 20:53:09,625 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 521 transitions. [2022-02-23 20:53:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-02-23 20:53:09,627 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:09,628 INFO L514 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:09,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-02-23 20:53:09,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-23 20:53:09,838 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash 844403576, now seen corresponding path program 63 times [2022-02-23 20:53:09,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:09,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015327241] [2022-02-23 20:53:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:53:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-02-23 20:53:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:53:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:53:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:53:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:53:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:53:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:53:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:53:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:53:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:53:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:53:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:53:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:53:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:53:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:53:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:53:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:53:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:53:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:53:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:53:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:53:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:53:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:53:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:53:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:53:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:53:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:53:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:53:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:53:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:53:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:53:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:53:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:53:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:53:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:53:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:53:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:53:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:53:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:53:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:53:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:53:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:53:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:53:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:53:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:53:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:53:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:53:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:53:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-02-23 20:53:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-02-23 20:53:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-02-23 20:53:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-02-23 20:53:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-02-23 20:53:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 5568 proven. 3018 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-02-23 20:53:12,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:53:12,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015327241] [2022-02-23 20:53:12,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015327241] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:53:12,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271405024] [2022-02-23 20:53:12,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:53:12,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:12,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:53:12,567 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:53:12,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-23 20:53:12,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2022-02-23 20:53:12,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:53:12,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 110 conjunts are in the unsatisfiable core [2022-02-23 20:53:12,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:53:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-02-23 20:53:15,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:53:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14098 backedges. 2968 proven. 5618 refuted. 0 times theorem prover too weak. 5512 trivial. 0 not checked. [2022-02-23 20:53:16,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271405024] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:53:16,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:53:16,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 58, 58] total 167 [2022-02-23 20:53:16,579 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671137961] [2022-02-23 20:53:16,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:53:16,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2022-02-23 20:53:16,580 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:16,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2022-02-23 20:53:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4571, Invalid=23151, Unknown=0, NotChecked=0, Total=27722 [2022-02-23 20:53:16,582 INFO L87 Difference]: Start difference. First operand 507 states and 521 transitions. Second operand has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2022-02-23 20:53:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:24,879 INFO L93 Difference]: Finished difference Result 957 states and 1134 transitions. [2022-02-23 20:53:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-02-23 20:53:24,879 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) Word has length 548 [2022-02-23 20:53:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:24,881 INFO L225 Difference]: With dead ends: 957 [2022-02-23 20:53:24,881 INFO L226 Difference]: Without dead ends: 734 [2022-02-23 20:53:24,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1586 GetRequests, 1203 SyntacticMatches, 1 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51991 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=24419, Invalid=122653, Unknown=0, NotChecked=0, Total=147072 [2022-02-23 20:53:24,889 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 2022 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 2004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 8771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2004 IncrementalHoareTripleChecker+Valid, 6767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:24,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2023 Valid, 253 Invalid, 8771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2004 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-23 20:53:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-02-23 20:53:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 517. [2022-02-23 20:53:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 414 states have (on average 1.0096618357487923) internal successors, (418), 415 states have internal predecessors, (418), 57 states have call successors, (57), 46 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2022-02-23 20:53:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 531 transitions. [2022-02-23 20:53:24,927 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 531 transitions. Word has length 548 [2022-02-23 20:53:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 531 transitions. [2022-02-23 20:53:24,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 3.3473053892215567) internal successors, (559), 165 states have internal predecessors, (559), 109 states have call successors, (111), 4 states have call predecessors, (111), 1 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2022-02-23 20:53:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 531 transitions. [2022-02-23 20:53:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2022-02-23 20:53:24,930 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:24,930 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:24,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-23 20:53:25,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2022-02-23 20:53:25,131 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1638545519, now seen corresponding path program 64 times [2022-02-23 20:53:25,131 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:25,131 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69233264] [2022-02-23 20:53:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:53:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-02-23 20:53:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:53:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:53:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:53:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:53:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:53:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:53:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:53:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:53:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:53:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:53:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:53:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:53:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:53:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:53:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:53:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:53:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:53:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:53:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:53:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:53:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:53:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:53:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:53:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:53:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:53:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:53:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:53:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:53:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:53:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:53:27,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:53:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:53:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:53:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:53:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:53:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:53:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:53:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:53:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:53:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:53:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:53:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:53:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:53:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:53:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:53:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:53:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:53:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:53:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-02-23 20:53:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-02-23 20:53:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-02-23 20:53:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-02-23 20:53:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-02-23 20:53:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 5781 proven. 3129 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-02-23 20:53:27,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:53:27,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69233264] [2022-02-23 20:53:27,963 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69233264] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:53:27,963 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491312242] [2022-02-23 20:53:27,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:53:27,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:27,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:53:27,964 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:53:27,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-23 20:53:28,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:53:28,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:53:28,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 112 conjunts are in the unsatisfiable core [2022-02-23 20:53:28,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:53:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-02-23 20:53:31,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:53:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 14634 backedges. 3078 proven. 5832 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2022-02-23 20:53:32,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491312242] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:53:32,125 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:53:32,125 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 59, 59] total 170 [2022-02-23 20:53:32,125 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544022002] [2022-02-23 20:53:32,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:53:32,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2022-02-23 20:53:32,126 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2022-02-23 20:53:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4738, Invalid=23992, Unknown=0, NotChecked=0, Total=28730 [2022-02-23 20:53:32,128 INFO L87 Difference]: Start difference. First operand 517 states and 531 transitions. Second operand has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-02-23 20:53:40,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:40,689 INFO L93 Difference]: Finished difference Result 975 states and 1155 transitions. [2022-02-23 20:53:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2022-02-23 20:53:40,689 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) Word has length 558 [2022-02-23 20:53:40,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:40,691 INFO L225 Difference]: With dead ends: 975 [2022-02-23 20:53:40,691 INFO L226 Difference]: Without dead ends: 748 [2022-02-23 20:53:40,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1615 GetRequests, 1225 SyntacticMatches, 1 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53944 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=25311, Invalid=127179, Unknown=0, NotChecked=0, Total=152490 [2022-02-23 20:53:40,699 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 2161 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6929 mSolverCounterSat, 1692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 8621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1692 IncrementalHoareTripleChecker+Valid, 6929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:40,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 256 Invalid, 8621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1692 Valid, 6929 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-23 20:53:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-02-23 20:53:40,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 527. [2022-02-23 20:53:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 422 states have (on average 1.009478672985782) internal successors, (426), 423 states have internal predecessors, (426), 58 states have call successors, (58), 47 states have call predecessors, (58), 46 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-02-23 20:53:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 541 transitions. [2022-02-23 20:53:40,739 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 541 transitions. Word has length 558 [2022-02-23 20:53:40,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:40,739 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 541 transitions. [2022-02-23 20:53:40,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 3.347058823529412) internal successors, (569), 168 states have internal predecessors, (569), 111 states have call successors, (113), 4 states have call predecessors, (113), 1 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-02-23 20:53:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 541 transitions. [2022-02-23 20:53:40,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-02-23 20:53:40,742 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:40,743 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:40,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-02-23 20:53:40,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:40,960 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash 736794278, now seen corresponding path program 65 times [2022-02-23 20:53:40,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:40,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65877795] [2022-02-23 20:53:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:40,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:53:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-02-23 20:53:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:53:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:53:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:53:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:53:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:53:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:53:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:53:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:53:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:53:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:53:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:53:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:53:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:53:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:53:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:53:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:53:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:53:43,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:53:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:53:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:53:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:53:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:53:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:53:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:53:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:53:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:53:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:53:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:53:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:53:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:53:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:53:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:53:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:53:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:53:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:53:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:53:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:53:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:53:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:53:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:53:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:53:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:53:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:53:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:53:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:53:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:53:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:53:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:53:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:53:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:53:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-02-23 20:53:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-02-23 20:53:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-02-23 20:53:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-02-23 20:53:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 5998 proven. 3242 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-23 20:53:43,890 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:53:43,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65877795] [2022-02-23 20:53:43,890 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65877795] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:53:43,890 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239382318] [2022-02-23 20:53:43,890 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:53:43,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:53:43,891 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:53:43,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-23 20:53:44,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2022-02-23 20:53:44,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:53:44,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 114 conjunts are in the unsatisfiable core [2022-02-23 20:53:44,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:53:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-23 20:53:48,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:53:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 15180 backedges. 6160 proven. 3080 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-23 20:53:49,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239382318] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:53:49,084 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:53:49,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 114, 114] total 173 [2022-02-23 20:53:49,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829432758] [2022-02-23 20:53:49,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:53:49,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2022-02-23 20:53:49,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2022-02-23 20:53:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6617, Invalid=23139, Unknown=0, NotChecked=0, Total=29756 [2022-02-23 20:53:49,087 INFO L87 Difference]: Start difference. First operand 527 states and 541 transitions. Second operand has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-02-23 20:53:54,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:54,073 INFO L93 Difference]: Finished difference Result 984 states and 1166 transitions. [2022-02-23 20:53:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-02-23 20:53:54,073 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) Word has length 568 [2022-02-23 20:53:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:54,077 INFO L225 Difference]: With dead ends: 984 [2022-02-23 20:53:54,077 INFO L226 Difference]: Without dead ends: 753 [2022-02-23 20:53:54,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1529 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22270 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=17959, Invalid=62981, Unknown=0, NotChecked=0, Total=80940 [2022-02-23 20:53:54,083 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 1226 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3176 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 4008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 3176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:54,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 176 Invalid, 4008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 3176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-23 20:53:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-02-23 20:53:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 529. [2022-02-23 20:53:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 424 states have (on average 1.009433962264151) internal successors, (428), 425 states have internal predecessors, (428), 58 states have call successors, (58), 47 states have call predecessors, (58), 46 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-02-23 20:53:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 543 transitions. [2022-02-23 20:53:54,124 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 543 transitions. Word has length 568 [2022-02-23 20:53:54,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:54,124 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 543 transitions. [2022-02-23 20:53:54,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 2.6878612716763004) internal successors, (465), 172 states have internal predecessors, (465), 113 states have call successors, (115), 3 states have call predecessors, (115), 1 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2022-02-23 20:53:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 543 transitions. [2022-02-23 20:53:54,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-02-23 20:53:54,127 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:54,127 INFO L514 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:54,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-23 20:53:54,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-23 20:53:54,328 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1400903543, now seen corresponding path program 66 times [2022-02-23 20:53:54,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:54,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160011478] [2022-02-23 20:53:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:53:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:53:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:53:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:53:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:53:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:53:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:53:55,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:53:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:53:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:53:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:53:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:53:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:53:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:53:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:53:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:53:55,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:53:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:53:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:53:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:53:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:53:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:53:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:53:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:53:55,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:53:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:53:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:53:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:53:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:53:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:53:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:53:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:53:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:53:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:53:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:53:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:53:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:53:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:53:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:53:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:53:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:53:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:53:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:53:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:53:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:53:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:53:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:53:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-02-23 20:53:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-02-23 20:53:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-02-23 20:53:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-02-23 20:53:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-02-23 20:53:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-02-23 20:53:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-02-23 20:53:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-02-23 20:53:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-02-23 20:53:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:53:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3190 proven. 6162 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-23 20:53:55,582 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:53:55,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160011478] [2022-02-23 20:53:55,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160011478] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:53:55,582 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463964143] [2022-02-23 20:53:55,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:53:55,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:53:55,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:53:55,583 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:53:55,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-23 20:53:55,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 57 check-sat command(s) [2022-02-23 20:53:55,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:53:55,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 115 conjunts are in the unsatisfiable core [2022-02-23 20:53:55,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:53:56,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-23 20:53:56,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:53:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15292 backedges. 3302 proven. 6050 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2022-02-23 20:53:57,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463964143] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:53:57,246 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:53:57,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61, 61] total 66 [2022-02-23 20:53:57,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049103973] [2022-02-23 20:53:57,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:53:57,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-02-23 20:53:57,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:53:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-02-23 20:53:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1786, Invalid=2504, Unknown=0, NotChecked=0, Total=4290 [2022-02-23 20:53:57,248 INFO L87 Difference]: Start difference. First operand 529 states and 543 transitions. Second operand has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-02-23 20:53:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:53:58,726 INFO L93 Difference]: Finished difference Result 548 states and 564 transitions. [2022-02-23 20:53:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-23 20:53:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Word has length 570 [2022-02-23 20:53:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:53:58,728 INFO L225 Difference]: With dead ends: 548 [2022-02-23 20:53:58,728 INFO L226 Difference]: Without dead ends: 546 [2022-02-23 20:53:58,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1303 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2952 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5350, Invalid=10906, Unknown=0, NotChecked=0, Total=16256 [2022-02-23 20:53:58,730 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 282 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-23 20:53:58,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 99 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-23 20:53:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-02-23 20:53:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 541. [2022-02-23 20:53:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 433 states have (on average 1.0092378752886837) internal successors, (437), 434 states have internal predecessors, (437), 60 states have call successors, (60), 48 states have call predecessors, (60), 47 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-02-23 20:53:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 556 transitions. [2022-02-23 20:53:58,771 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 556 transitions. Word has length 570 [2022-02-23 20:53:58,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:53:58,772 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 556 transitions. [2022-02-23 20:53:58,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.787878787878788) internal successors, (316), 63 states have internal predecessors, (316), 58 states have call successors, (62), 4 states have call predecessors, (62), 1 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-02-23 20:53:58,772 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 556 transitions. [2022-02-23 20:53:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2022-02-23 20:53:58,775 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:53:58,775 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:53:58,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-23 20:53:58,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-23 20:53:58,975 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:53:58,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:53:58,976 INFO L85 PathProgramCache]: Analyzing trace with hash 707100593, now seen corresponding path program 67 times [2022-02-23 20:53:58,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:53:58,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733711068] [2022-02-23 20:53:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:53:58,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:53:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:54:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-02-23 20:54:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:54:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:54:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:54:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:54:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:54:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:54:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:54:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:54:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:54:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:54:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:54:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:54:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:54:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:54:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:54:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:54:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:54:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:54:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:54:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:54:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:54:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:54:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:54:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:54:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:54:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:54:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:54:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:54:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:54:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:54:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:54:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:54:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:54:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:54:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:54:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:54:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:54:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:54:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:54:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:54:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:54:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:54:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:54:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:54:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:54:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-02-23 20:54:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-02-23 20:54:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-02-23 20:54:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-02-23 20:54:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-02-23 20:54:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-02-23 20:54:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-02-23 20:54:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-02-23 20:54:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-02-23 20:54:02,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-02-23 20:54:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-02-23 20:54:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6444 proven. 3360 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-02-23 20:54:02,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:54:02,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733711068] [2022-02-23 20:54:02,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733711068] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:54:02,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913118561] [2022-02-23 20:54:02,100 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:54:02,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:54:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:54:02,101 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:54:02,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-23 20:54:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:02,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 116 conjunts are in the unsatisfiable core [2022-02-23 20:54:02,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:54:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6832 proven. 3192 refuted. 0 times theorem prover too weak. 6164 trivial. 0 not checked. [2022-02-23 20:54:06,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:54:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 16188 backedges. 6610 proven. 3192 refuted. 0 times theorem prover too weak. 6386 trivial. 0 not checked. [2022-02-23 20:54:07,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913118561] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:54:07,413 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:54:07,413 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 116, 116] total 177 [2022-02-23 20:54:07,413 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822017775] [2022-02-23 20:54:07,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:54:07,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 177 states [2022-02-23 20:54:07,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:54:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2022-02-23 20:54:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6908, Invalid=24244, Unknown=0, NotChecked=0, Total=31152 [2022-02-23 20:54:07,417 INFO L87 Difference]: Start difference. First operand 541 states and 556 transitions. Second operand has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2022-02-23 20:54:12,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:54:12,919 INFO L93 Difference]: Finished difference Result 1012 states and 1198 transitions. [2022-02-23 20:54:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-23 20:54:12,919 INFO L78 Accepts]: Start accepts. Automaton has has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) Word has length 586 [2022-02-23 20:54:12,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:54:12,921 INFO L225 Difference]: With dead ends: 1012 [2022-02-23 20:54:12,921 INFO L226 Difference]: Without dead ends: 771 [2022-02-23 20:54:12,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 1286 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23296 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18652, Invalid=65738, Unknown=0, NotChecked=0, Total=84390 [2022-02-23 20:54:12,925 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 1388 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:54:12,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 213 Invalid, 5341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 20:54:12,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-02-23 20:54:12,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 543. [2022-02-23 20:54:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 435 states have (on average 1.0091954022988505) internal successors, (439), 436 states have internal predecessors, (439), 60 states have call successors, (60), 48 states have call predecessors, (60), 47 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2022-02-23 20:54:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 558 transitions. [2022-02-23 20:54:12,967 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 558 transitions. Word has length 586 [2022-02-23 20:54:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:54:12,968 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 558 transitions. [2022-02-23 20:54:12,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 177 states, 177 states have (on average 2.7175141242937855) internal successors, (481), 176 states have internal predecessors, (481), 116 states have call successors, (119), 3 states have call predecessors, (119), 2 states have return successors, (117), 116 states have call predecessors, (117), 116 states have call successors, (117) [2022-02-23 20:54:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 558 transitions. [2022-02-23 20:54:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-02-23 20:54:12,971 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:54:12,971 INFO L514 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:54:12,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-02-23 20:54:13,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-02-23 20:54:13,189 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:54:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:54:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash -696434988, now seen corresponding path program 68 times [2022-02-23 20:54:13,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:54:13,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231927539] [2022-02-23 20:54:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:54:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:54:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:54:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-02-23 20:54:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:54:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:54:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:54:16,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:54:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:54:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:54:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:54:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:54:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:54:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:54:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:54:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:54:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:54:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:54:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:54:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:54:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:54:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:54:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:54:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:54:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:54:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:54:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:54:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:54:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:54:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:54:16,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:54:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:54:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:54:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:54:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:54:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:54:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:54:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:54:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:54:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:54:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:54:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:54:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:54:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:54:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:54:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:54:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:54:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:54:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:54:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:54:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-02-23 20:54:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-02-23 20:54:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-02-23 20:54:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-02-23 20:54:16,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-02-23 20:54:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-02-23 20:54:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-02-23 20:54:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-02-23 20:54:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-02-23 20:54:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-02-23 20:54:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 6444 proven. 3474 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-02-23 20:54:16,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:54:16,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231927539] [2022-02-23 20:54:16,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231927539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:54:16,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282411858] [2022-02-23 20:54:16,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:54:16,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:54:16,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:54:16,324 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:54:16,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-23 20:54:16,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:54:16,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:54:16,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1607 conjuncts, 118 conjunts are in the unsatisfiable core [2022-02-23 20:54:16,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:54:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-02-23 20:54:20,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:54:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16302 backedges. 3420 proven. 6498 refuted. 0 times theorem prover too weak. 6384 trivial. 0 not checked. [2022-02-23 20:54:20,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282411858] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:54:20,795 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:54:20,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 62, 62] total 179 [2022-02-23 20:54:20,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434588054] [2022-02-23 20:54:20,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:54:20,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2022-02-23 20:54:20,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:54:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2022-02-23 20:54:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=26605, Unknown=0, NotChecked=0, Total=31862 [2022-02-23 20:54:20,799 INFO L87 Difference]: Start difference. First operand 543 states and 558 transitions. Second operand has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-02-23 20:54:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:54:30,133 INFO L93 Difference]: Finished difference Result 1025 states and 1215 transitions. [2022-02-23 20:54:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2022-02-23 20:54:30,133 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Word has length 588 [2022-02-23 20:54:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:54:30,135 INFO L225 Difference]: With dead ends: 1025 [2022-02-23 20:54:30,136 INFO L226 Difference]: Without dead ends: 786 [2022-02-23 20:54:30,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1702 GetRequests, 1291 SyntacticMatches, 1 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60019 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=28083, Invalid=141249, Unknown=0, NotChecked=0, Total=169332 [2022-02-23 20:54:30,145 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1984 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 7344 mSolverCounterSat, 1753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 9097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 7344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:54:30,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1985 Valid, 275 Invalid, 9097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1753 Valid, 7344 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-23 20:54:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-02-23 20:54:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 553. [2022-02-23 20:54:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 443 states have (on average 1.0090293453724606) internal successors, (447), 444 states have internal predecessors, (447), 61 states have call successors, (61), 49 states have call predecessors, (61), 48 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-02-23 20:54:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 568 transitions. [2022-02-23 20:54:30,188 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 568 transitions. Word has length 588 [2022-02-23 20:54:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:54:30,188 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 568 transitions. [2022-02-23 20:54:30,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 3.346368715083799) internal successors, (599), 177 states have internal predecessors, (599), 117 states have call successors, (119), 4 states have call predecessors, (119), 1 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-02-23 20:54:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 568 transitions. [2022-02-23 20:54:30,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-02-23 20:54:30,191 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:54:30,192 INFO L514 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:54:30,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-23 20:54:30,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-02-23 20:54:30,392 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:54:30,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:54:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash -619026229, now seen corresponding path program 69 times [2022-02-23 20:54:30,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:54:30,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78378366] [2022-02-23 20:54:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:54:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:54:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:54:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-02-23 20:54:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:54:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:54:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:54:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:54:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:54:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:54:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:54:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:54:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:54:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:54:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:54:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:54:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:54:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:54:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:54:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:54:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:54:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:54:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:54:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:54:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:54:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:54:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:54:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:54:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:54:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:54:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:54:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:54:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:54:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:54:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:54:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:54:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:54:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:54:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:54:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:54:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:54:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:54:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:54:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:54:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:54:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:54:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:54:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:54:33,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:54:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:54:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:54:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-02-23 20:54:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-02-23 20:54:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-02-23 20:54:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-02-23 20:54:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-02-23 20:54:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-02-23 20:54:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-02-23 20:54:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-02-23 20:54:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-02-23 20:54:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-02-23 20:54:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 6673 proven. 3593 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-02-23 20:54:33,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:54:33,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78378366] [2022-02-23 20:54:33,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78378366] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:54:33,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463901869] [2022-02-23 20:54:33,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:54:33,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:54:33,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:54:33,641 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:54:33,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-23 20:54:33,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-02-23 20:54:33,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:54:33,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1634 conjuncts, 120 conjunts are in the unsatisfiable core [2022-02-23 20:54:33,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:54:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-02-23 20:54:37,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:54:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 16878 backedges. 3538 proven. 6728 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked. [2022-02-23 20:54:38,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463901869] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:54:38,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:54:38,336 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 63, 63] total 182 [2022-02-23 20:54:38,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032733859] [2022-02-23 20:54:38,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:54:38,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2022-02-23 20:54:38,336 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:54:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2022-02-23 20:54:38,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5436, Invalid=27506, Unknown=0, NotChecked=0, Total=32942 [2022-02-23 20:54:38,339 INFO L87 Difference]: Start difference. First operand 553 states and 568 transitions. Second operand has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-02-23 20:54:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:54:48,036 INFO L93 Difference]: Finished difference Result 1043 states and 1236 transitions. [2022-02-23 20:54:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2022-02-23 20:54:48,037 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) Word has length 598 [2022-02-23 20:54:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:54:48,039 INFO L225 Difference]: With dead ends: 1043 [2022-02-23 20:54:48,039 INFO L226 Difference]: Without dead ends: 800 [2022-02-23 20:54:48,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1731 GetRequests, 1313 SyntacticMatches, 1 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62116 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=29039, Invalid=146103, Unknown=0, NotChecked=0, Total=175142 [2022-02-23 20:54:48,048 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2043 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 7655 mSolverCounterSat, 1617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 9272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1617 IncrementalHoareTripleChecker+Valid, 7655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-02-23 20:54:48,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 273 Invalid, 9272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1617 Valid, 7655 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-02-23 20:54:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-02-23 20:54:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 563. [2022-02-23 20:54:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 451 states have (on average 1.0088691796008868) internal successors, (455), 452 states have internal predecessors, (455), 62 states have call successors, (62), 50 states have call predecessors, (62), 49 states have return successors, (61), 60 states have call predecessors, (61), 61 states have call successors, (61) [2022-02-23 20:54:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 578 transitions. [2022-02-23 20:54:48,092 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 578 transitions. Word has length 598 [2022-02-23 20:54:48,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:54:48,092 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 578 transitions. [2022-02-23 20:54:48,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 3.3461538461538463) internal successors, (609), 180 states have internal predecessors, (609), 119 states have call successors, (121), 4 states have call predecessors, (121), 1 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-02-23 20:54:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 578 transitions. [2022-02-23 20:54:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2022-02-23 20:54:48,096 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:54:48,096 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:54:48,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-23 20:54:48,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:54:48,311 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:54:48,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:54:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2127033342, now seen corresponding path program 70 times [2022-02-23 20:54:48,312 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:54:48,312 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613480732] [2022-02-23 20:54:48,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:54:48,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:54:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:54:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-02-23 20:54:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:54:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:54:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:54:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:54:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:54:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:54:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:54:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:54:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:54:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:54:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:54:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:54:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:54:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:54:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:54:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:54:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:54:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:54:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:54:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:54:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:54:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:54:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:54:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:54:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:54:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:54:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:54:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:54:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:54:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:54:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:54:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:54:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:54:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:54:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:54:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:54:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:54:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:54:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:54:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:54:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:54:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:54:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:54:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:54:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:54:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:54:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:54:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:54:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:54:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-02-23 20:54:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-02-23 20:54:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-02-23 20:54:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-02-23 20:54:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-02-23 20:54:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-02-23 20:54:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-02-23 20:54:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-02-23 20:54:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-02-23 20:54:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:54:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 6906 proven. 3714 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-02-23 20:54:51,690 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:54:51,690 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613480732] [2022-02-23 20:54:51,690 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613480732] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:54:51,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690170195] [2022-02-23 20:54:51,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:54:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:54:51,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:54:51,692 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:54:51,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-23 20:54:51,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:54:51,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:54:51,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 122 conjunts are in the unsatisfiable core [2022-02-23 20:54:51,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:54:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-02-23 20:54:55,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:54:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17464 backedges. 3658 proven. 6962 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2022-02-23 20:54:56,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690170195] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:54:56,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:54:56,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 64, 64] total 185 [2022-02-23 20:54:56,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945948984] [2022-02-23 20:54:56,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:54:56,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2022-02-23 20:54:56,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:54:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2022-02-23 20:54:56,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5618, Invalid=28422, Unknown=0, NotChecked=0, Total=34040 [2022-02-23 20:54:56,465 INFO L87 Difference]: Start difference. First operand 563 states and 578 transitions. Second operand has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2022-02-23 20:55:06,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:55:06,730 INFO L93 Difference]: Finished difference Result 1061 states and 1257 transitions. [2022-02-23 20:55:06,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2022-02-23 20:55:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) Word has length 608 [2022-02-23 20:55:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:55:06,733 INFO L225 Difference]: With dead ends: 1061 [2022-02-23 20:55:06,733 INFO L226 Difference]: Without dead ends: 814 [2022-02-23 20:55:06,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1335 SyntacticMatches, 1 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64249 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=30011, Invalid=151039, Unknown=0, NotChecked=0, Total=181050 [2022-02-23 20:55:06,742 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 2244 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 8387 mSolverCounterSat, 1720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 10107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1720 IncrementalHoareTripleChecker+Valid, 8387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:55:06,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2245 Valid, 296 Invalid, 10107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1720 Valid, 8387 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-23 20:55:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-02-23 20:55:06,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 573. [2022-02-23 20:55:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 459 states have (on average 1.008714596949891) internal successors, (463), 460 states have internal predecessors, (463), 63 states have call successors, (63), 51 states have call predecessors, (63), 50 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-02-23 20:55:06,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 588 transitions. [2022-02-23 20:55:06,787 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 588 transitions. Word has length 608 [2022-02-23 20:55:06,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:55:06,787 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 588 transitions. [2022-02-23 20:55:06,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 3.345945945945946) internal successors, (619), 183 states have internal predecessors, (619), 121 states have call successors, (123), 4 states have call predecessors, (123), 1 states have return successors, (119), 119 states have call predecessors, (119), 119 states have call successors, (119) [2022-02-23 20:55:06,788 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 588 transitions. [2022-02-23 20:55:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2022-02-23 20:55:06,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:55:06,791 INFO L514 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:55:06,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-23 20:55:06,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:06,991 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:55:06,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:55:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2015205497, now seen corresponding path program 71 times [2022-02-23 20:55:06,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:55:06,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870964485] [2022-02-23 20:55:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:55:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:55:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:55:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-02-23 20:55:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:55:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:55:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:55:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:55:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:55:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:55:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:55:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:55:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:55:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:55:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:55:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:55:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:55:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:55:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:55:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:55:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:55:10,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:55:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:55:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:55:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:55:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:55:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:55:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:55:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:55:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:55:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:55:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:55:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:55:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:55:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:55:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:55:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:55:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:55:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:55:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:55:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:55:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:55:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:55:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:55:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:55:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:55:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:55:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:55:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-02-23 20:55:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-02-23 20:55:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-02-23 20:55:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-02-23 20:55:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-02-23 20:55:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-02-23 20:55:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-02-23 20:55:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-02-23 20:55:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-02-23 20:55:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-02-23 20:55:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-02-23 20:55:10,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-02-23 20:55:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-02-23 20:55:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-02-23 20:55:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-02-23 20:55:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7143 proven. 3837 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-23 20:55:10,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:55:10,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870964485] [2022-02-23 20:55:10,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870964485] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:55:10,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29898138] [2022-02-23 20:55:10,448 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:55:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:55:10,449 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:55:10,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-23 20:55:10,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2022-02-23 20:55:10,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:55:10,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 124 conjunts are in the unsatisfiable core [2022-02-23 20:55:10,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:55:15,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-23 20:55:15,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:55:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18060 backedges. 7320 proven. 3660 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-23 20:55:16,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29898138] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:55:16,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:55:16,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 124, 124] total 188 [2022-02-23 20:55:16,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541154829] [2022-02-23 20:55:16,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:55:16,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2022-02-23 20:55:16,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:55:16,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2022-02-23 20:55:16,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7817, Invalid=27339, Unknown=0, NotChecked=0, Total=35156 [2022-02-23 20:55:16,513 INFO L87 Difference]: Start difference. First operand 573 states and 588 transitions. Second operand has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-02-23 20:55:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:55:22,507 INFO L93 Difference]: Finished difference Result 1070 states and 1268 transitions. [2022-02-23 20:55:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-02-23 20:55:22,507 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) Word has length 618 [2022-02-23 20:55:22,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:55:22,510 INFO L225 Difference]: With dead ends: 1070 [2022-02-23 20:55:22,510 INFO L226 Difference]: Without dead ends: 819 [2022-02-23 20:55:22,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26395 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=21239, Invalid=74551, Unknown=0, NotChecked=0, Total=95790 [2022-02-23 20:55:22,515 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 1281 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4096 mSolverCounterSat, 941 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 5037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 941 IncrementalHoareTripleChecker+Valid, 4096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-23 20:55:22,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1282 Valid, 191 Invalid, 5037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [941 Valid, 4096 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-23 20:55:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-02-23 20:55:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 575. [2022-02-23 20:55:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 461 states have (on average 1.0086767895878526) internal successors, (465), 462 states have internal predecessors, (465), 63 states have call successors, (63), 51 states have call predecessors, (63), 50 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2022-02-23 20:55:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 590 transitions. [2022-02-23 20:55:22,562 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 590 transitions. Word has length 618 [2022-02-23 20:55:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:55:22,562 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 590 transitions. [2022-02-23 20:55:22,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 2.6861702127659575) internal successors, (505), 187 states have internal predecessors, (505), 123 states have call successors, (125), 3 states have call predecessors, (125), 1 states have return successors, (122), 122 states have call predecessors, (122), 122 states have call successors, (122) [2022-02-23 20:55:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 590 transitions. [2022-02-23 20:55:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2022-02-23 20:55:22,566 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:55:22,566 INFO L514 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:55:22,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-02-23 20:55:22,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:22,766 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:55:22,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:55:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 842533788, now seen corresponding path program 72 times [2022-02-23 20:55:22,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:55:22,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072617471] [2022-02-23 20:55:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:55:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:55:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:55:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:55:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:55:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:55:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:55:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:55:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:55:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:55:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:55:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:55:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:55:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:55:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:55:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:55:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:55:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:55:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:55:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:55:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:55:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:55:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:55:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:55:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:55:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:55:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:55:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:55:24,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:55:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:55:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:55:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:55:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:55:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:55:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:55:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:55:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:55:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:55:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:55:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:55:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:55:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:55:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:55:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:55:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:55:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:55:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:55:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:55:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:55:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-02-23 20:55:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-02-23 20:55:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-02-23 20:55:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-02-23 20:55:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-02-23 20:55:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-02-23 20:55:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-02-23 20:55:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-02-23 20:55:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-02-23 20:55:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-02-23 20:55:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-02-23 20:55:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-02-23 20:55:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-02-23 20:55:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-02-23 20:55:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3780 proven. 7322 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-23 20:55:24,200 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:55:24,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072617471] [2022-02-23 20:55:24,200 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072617471] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:55:24,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147772508] [2022-02-23 20:55:24,200 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:55:24,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:55:24,201 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:55:24,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-23 20:55:24,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 62 check-sat command(s) [2022-02-23 20:55:24,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:55:24,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 125 conjunts are in the unsatisfiable core [2022-02-23 20:55:24,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:55:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-23 20:55:25,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:55:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 18182 backedges. 3902 proven. 7200 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2022-02-23 20:55:26,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147772508] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:55:26,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:55:26,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 71 [2022-02-23 20:55:26,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300725508] [2022-02-23 20:55:26,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:55:26,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-02-23 20:55:26,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:55:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-02-23 20:55:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2096, Invalid=2874, Unknown=0, NotChecked=0, Total=4970 [2022-02-23 20:55:26,022 INFO L87 Difference]: Start difference. First operand 575 states and 590 transitions. Second operand has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-02-23 20:55:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:55:27,614 INFO L93 Difference]: Finished difference Result 594 states and 611 transitions. [2022-02-23 20:55:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-23 20:55:27,614 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) Word has length 620 [2022-02-23 20:55:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:55:27,616 INFO L225 Difference]: With dead ends: 594 [2022-02-23 20:55:27,616 INFO L226 Difference]: Without dead ends: 592 [2022-02-23 20:55:27,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1418 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3367 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=6280, Invalid=12626, Unknown=0, NotChecked=0, Total=18906 [2022-02-23 20:55:27,618 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 299 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-23 20:55:27,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 114 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-23 20:55:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-02-23 20:55:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 587. [2022-02-23 20:55:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 470 states have (on average 1.0085106382978724) internal successors, (474), 471 states have internal predecessors, (474), 65 states have call successors, (65), 52 states have call predecessors, (65), 51 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-02-23 20:55:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 603 transitions. [2022-02-23 20:55:27,665 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 603 transitions. Word has length 620 [2022-02-23 20:55:27,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:55:27,665 INFO L470 AbstractCegarLoop]: Abstraction has 587 states and 603 transitions. [2022-02-23 20:55:27,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 4.802816901408451) internal successors, (341), 68 states have internal predecessors, (341), 63 states have call successors, (67), 4 states have call predecessors, (67), 1 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-02-23 20:55:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 603 transitions. [2022-02-23 20:55:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2022-02-23 20:55:27,669 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:55:27,669 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:55:27,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-23 20:55:27,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2022-02-23 20:55:27,869 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:55:27,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:55:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1976769732, now seen corresponding path program 73 times [2022-02-23 20:55:27,870 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:55:27,870 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262238005] [2022-02-23 20:55:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:55:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:55:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:55:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-02-23 20:55:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:55:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:55:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:55:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:55:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:55:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:55:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:55:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:55:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:55:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:55:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:55:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:55:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:55:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:55:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:55:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:55:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:55:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:55:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:55:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:55:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:55:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:55:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:55:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:55:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:55:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:55:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:55:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:55:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:55:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:55:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:55:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:55:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:55:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:55:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:55:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:55:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:55:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:55:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:55:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:55:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:55:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:55:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:55:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:55:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:55:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-02-23 20:55:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-02-23 20:55:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-02-23 20:55:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-02-23 20:55:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-02-23 20:55:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-02-23 20:55:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-02-23 20:55:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-02-23 20:55:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-02-23 20:55:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-02-23 20:55:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-02-23 20:55:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-02-23 20:55:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-02-23 20:55:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-02-23 20:55:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-02-23 20:55:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-02-23 20:55:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7629 proven. 3965 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-02-23 20:55:31,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:55:31,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262238005] [2022-02-23 20:55:31,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262238005] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:55:31,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012794749] [2022-02-23 20:55:31,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:55:31,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:31,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:55:31,491 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:55:31,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-23 20:55:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:31,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 126 conjunts are in the unsatisfiable core [2022-02-23 20:55:31,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:55:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 8052 proven. 3782 refuted. 0 times theorem prover too weak. 7324 trivial. 0 not checked. [2022-02-23 20:55:36,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:55:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19158 backedges. 7810 proven. 3782 refuted. 0 times theorem prover too weak. 7566 trivial. 0 not checked. [2022-02-23 20:55:37,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012794749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:55:37,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:55:37,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 126, 126] total 192 [2022-02-23 20:55:37,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303012844] [2022-02-23 20:55:37,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:55:37,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-02-23 20:55:37,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:55:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-02-23 20:55:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8133, Invalid=28539, Unknown=0, NotChecked=0, Total=36672 [2022-02-23 20:55:37,630 INFO L87 Difference]: Start difference. First operand 587 states and 603 transitions. Second operand has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2022-02-23 20:55:43,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:55:43,817 INFO L93 Difference]: Finished difference Result 1098 states and 1300 transitions. [2022-02-23 20:55:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-02-23 20:55:43,818 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) Word has length 636 [2022-02-23 20:55:43,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:55:43,820 INFO L225 Difference]: With dead ends: 1098 [2022-02-23 20:55:43,820 INFO L226 Difference]: Without dead ends: 837 [2022-02-23 20:55:43,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1710 GetRequests, 1396 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27511 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=21992, Invalid=77548, Unknown=0, NotChecked=0, Total=99540 [2022-02-23 20:55:43,825 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1291 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4145 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 5100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 4145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:55:43,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 203 Invalid, 5100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 4145 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 20:55:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-02-23 20:55:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 589. [2022-02-23 20:55:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 472 states have (on average 1.0084745762711864) internal successors, (476), 473 states have internal predecessors, (476), 65 states have call successors, (65), 52 states have call predecessors, (65), 51 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-02-23 20:55:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 605 transitions. [2022-02-23 20:55:43,873 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 605 transitions. Word has length 636 [2022-02-23 20:55:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:55:43,874 INFO L470 AbstractCegarLoop]: Abstraction has 589 states and 605 transitions. [2022-02-23 20:55:43,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 2.7135416666666665) internal successors, (521), 191 states have internal predecessors, (521), 126 states have call successors, (129), 3 states have call predecessors, (129), 2 states have return successors, (127), 126 states have call predecessors, (127), 126 states have call successors, (127) [2022-02-23 20:55:43,874 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 605 transitions. [2022-02-23 20:55:43,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-02-23 20:55:43,877 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:55:43,877 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:55:43,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-02-23 20:55:44,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:44,078 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:55:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:55:44,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1168256295, now seen corresponding path program 74 times [2022-02-23 20:55:44,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:55:44,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556743797] [2022-02-23 20:55:44,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:55:44,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:55:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:55:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-02-23 20:55:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:55:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:55:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:55:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:55:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:55:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:55:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:55:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:55:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:55:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:55:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:55:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:55:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:55:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:55:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:55:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:55:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:55:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:55:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:55:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:55:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:55:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:55:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:55:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:55:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:55:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:55:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:55:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:55:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:55:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:55:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:55:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:55:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:55:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:55:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:55:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:55:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:55:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:55:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:55:47,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:55:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:55:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:55:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:55:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:55:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:55:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:55:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-02-23 20:55:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-02-23 20:55:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-02-23 20:55:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-02-23 20:55:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-02-23 20:55:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-02-23 20:55:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-02-23 20:55:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-02-23 20:55:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-02-23 20:55:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-02-23 20:55:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-02-23 20:55:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-02-23 20:55:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-02-23 20:55:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-02-23 20:55:47,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-02-23 20:55:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:55:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 7629 proven. 4089 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-02-23 20:55:47,747 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:55:47,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556743797] [2022-02-23 20:55:47,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556743797] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:55:47,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445592955] [2022-02-23 20:55:47,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:55:47,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:55:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:55:47,749 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:55:47,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-23 20:55:47,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:55:47,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:55:47,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1742 conjuncts, 128 conjunts are in the unsatisfiable core [2022-02-23 20:55:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:55:52,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-02-23 20:55:52,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:55:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 19282 backedges. 4030 proven. 7688 refuted. 0 times theorem prover too weak. 7564 trivial. 0 not checked. [2022-02-23 20:55:52,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445592955] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:55:52,872 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:55:52,872 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 67, 67] total 194 [2022-02-23 20:55:52,872 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422834465] [2022-02-23 20:55:52,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:55:52,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-02-23 20:55:52,873 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:55:52,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-02-23 20:55:52,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6182, Invalid=31260, Unknown=0, NotChecked=0, Total=37442 [2022-02-23 20:55:52,876 INFO L87 Difference]: Start difference. First operand 589 states and 605 transitions. Second operand has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2022-02-23 20:56:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:56:03,704 INFO L93 Difference]: Finished difference Result 1111 states and 1317 transitions. [2022-02-23 20:56:03,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-02-23 20:56:03,705 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) Word has length 638 [2022-02-23 20:56:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:56:03,707 INFO L225 Difference]: With dead ends: 1111 [2022-02-23 20:56:03,707 INFO L226 Difference]: Without dead ends: 852 [2022-02-23 20:56:03,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1847 GetRequests, 1401 SyntacticMatches, 1 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70864 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=33023, Invalid=166339, Unknown=0, NotChecked=0, Total=199362 [2022-02-23 20:56:03,716 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 2241 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 7929 mSolverCounterSat, 1821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 9750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1821 IncrementalHoareTripleChecker+Valid, 7929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-02-23 20:56:03,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 265 Invalid, 9750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1821 Valid, 7929 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-02-23 20:56:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2022-02-23 20:56:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 599. [2022-02-23 20:56:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 480 states have (on average 1.0083333333333333) internal successors, (484), 481 states have internal predecessors, (484), 66 states have call successors, (66), 53 states have call predecessors, (66), 52 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-02-23 20:56:03,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 615 transitions. [2022-02-23 20:56:03,765 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 615 transitions. Word has length 638 [2022-02-23 20:56:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:56:03,765 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 615 transitions. [2022-02-23 20:56:03,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 3.345360824742268) internal successors, (649), 192 states have internal predecessors, (649), 127 states have call successors, (129), 4 states have call predecessors, (129), 1 states have return successors, (125), 125 states have call predecessors, (125), 125 states have call successors, (125) [2022-02-23 20:56:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 615 transitions. [2022-02-23 20:56:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2022-02-23 20:56:03,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:56:03,769 INFO L514 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:56:03,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-23 20:56:03,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:56:03,970 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:56:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:56:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1475078818, now seen corresponding path program 75 times [2022-02-23 20:56:03,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:56:03,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826850909] [2022-02-23 20:56:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:56:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:56:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:56:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-02-23 20:56:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:56:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:56:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:56:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:56:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:56:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:56:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:56:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:56:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:56:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:56:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:56:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:56:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:56:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:56:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:56:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:56:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:56:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:56:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:56:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:56:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:56:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:56:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:56:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:56:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:56:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:56:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:56:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:56:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:56:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:56:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:56:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:56:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:56:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:56:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:56:07,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:56:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:56:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:56:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:56:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:56:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:56:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:56:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:56:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:56:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:56:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:56:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:56:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:56:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-02-23 20:56:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-02-23 20:56:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-02-23 20:56:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-02-23 20:56:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-02-23 20:56:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-02-23 20:56:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-02-23 20:56:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-02-23 20:56:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-02-23 20:56:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-02-23 20:56:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-02-23 20:56:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-02-23 20:56:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-02-23 20:56:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-02-23 20:56:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 7878 proven. 4218 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-02-23 20:56:07,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:56:07,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826850909] [2022-02-23 20:56:07,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826850909] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:56:07,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125238314] [2022-02-23 20:56:07,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:56:07,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:56:07,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:56:07,753 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:56:07,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-23 20:56:08,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2022-02-23 20:56:08,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:56:08,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 130 conjunts are in the unsatisfiable core [2022-02-23 20:56:08,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:56:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-02-23 20:56:12,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:56:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 19908 backedges. 4158 proven. 7938 refuted. 0 times theorem prover too weak. 7812 trivial. 0 not checked. [2022-02-23 20:56:13,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125238314] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:56:13,126 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:56:13,126 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 68, 68] total 197 [2022-02-23 20:56:13,126 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721480712] [2022-02-23 20:56:13,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:56:13,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2022-02-23 20:56:13,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:56:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2022-02-23 20:56:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6376, Invalid=32236, Unknown=0, NotChecked=0, Total=38612 [2022-02-23 20:56:13,131 INFO L87 Difference]: Start difference. First operand 599 states and 615 transitions. Second operand has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-02-23 20:56:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:56:24,492 INFO L93 Difference]: Finished difference Result 1129 states and 1338 transitions. [2022-02-23 20:56:24,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-02-23 20:56:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) Word has length 648 [2022-02-23 20:56:24,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:56:24,494 INFO L225 Difference]: With dead ends: 1129 [2022-02-23 20:56:24,494 INFO L226 Difference]: Without dead ends: 866 [2022-02-23 20:56:24,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1423 SyntacticMatches, 1 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73141 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=34059, Invalid=171603, Unknown=0, NotChecked=0, Total=205662 [2022-02-23 20:56:24,507 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 2374 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8715 mSolverCounterSat, 2229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 10944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2229 IncrementalHoareTripleChecker+Valid, 8715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:56:24,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 293 Invalid, 10944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2229 Valid, 8715 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-23 20:56:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-02-23 20:56:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 609. [2022-02-23 20:56:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 488 states have (on average 1.0081967213114753) internal successors, (492), 489 states have internal predecessors, (492), 67 states have call successors, (67), 54 states have call predecessors, (67), 53 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-02-23 20:56:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 625 transitions. [2022-02-23 20:56:24,593 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 625 transitions. Word has length 648 [2022-02-23 20:56:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:56:24,593 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 625 transitions. [2022-02-23 20:56:24,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 3.3451776649746194) internal successors, (659), 195 states have internal predecessors, (659), 129 states have call successors, (131), 4 states have call predecessors, (131), 1 states have return successors, (127), 127 states have call predecessors, (127), 127 states have call successors, (127) [2022-02-23 20:56:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 625 transitions. [2022-02-23 20:56:24,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-02-23 20:56:24,597 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:56:24,597 INFO L514 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:56:24,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-02-23 20:56:24,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-23 20:56:24,797 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:56:24,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:56:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1326209323, now seen corresponding path program 76 times [2022-02-23 20:56:24,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:56:24,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956535875] [2022-02-23 20:56:24,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:56:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:56:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:56:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-02-23 20:56:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:56:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:56:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:56:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:56:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:56:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:56:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:56:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:56:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:56:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:56:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:56:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:56:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:56:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:56:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:56:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:56:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:56:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:56:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:56:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:56:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:56:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:56:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:56:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:56:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:56:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:56:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:56:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:56:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:56:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:56:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:56:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:56:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:56:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:56:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:56:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:56:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:56:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:56:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:56:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:56:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:56:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:56:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:56:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-02-23 20:56:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-02-23 20:56:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-02-23 20:56:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-02-23 20:56:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-02-23 20:56:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-02-23 20:56:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-02-23 20:56:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-02-23 20:56:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-02-23 20:56:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-02-23 20:56:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-02-23 20:56:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-02-23 20:56:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-02-23 20:56:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-02-23 20:56:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-02-23 20:56:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-02-23 20:56:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-02-23 20:56:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-02-23 20:56:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-02-23 20:56:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-02-23 20:56:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 8131 proven. 4349 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-02-23 20:56:28,682 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:56:28,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956535875] [2022-02-23 20:56:28,682 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956535875] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:56:28,682 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777617209] [2022-02-23 20:56:28,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:56:28,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:56:28,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:56:28,683 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:56:28,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-23 20:56:28,866 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:56:28,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:56:28,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 132 conjunts are in the unsatisfiable core [2022-02-23 20:56:28,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:56:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-02-23 20:56:33,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:56:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20544 backedges. 4288 proven. 8192 refuted. 0 times theorem prover too weak. 8064 trivial. 0 not checked. [2022-02-23 20:56:34,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777617209] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:56:34,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:56:34,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 69, 69] total 200 [2022-02-23 20:56:34,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395070256] [2022-02-23 20:56:34,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:56:34,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 200 states [2022-02-23 20:56:34,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:56:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2022-02-23 20:56:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6573, Invalid=33227, Unknown=0, NotChecked=0, Total=39800 [2022-02-23 20:56:34,046 INFO L87 Difference]: Start difference. First operand 609 states and 625 transitions. Second operand has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-02-23 20:56:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:56:45,457 INFO L93 Difference]: Finished difference Result 1147 states and 1359 transitions. [2022-02-23 20:56:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2022-02-23 20:56:45,457 INFO L78 Accepts]: Start accepts. Automaton has has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) Word has length 658 [2022-02-23 20:56:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:56:45,459 INFO L225 Difference]: With dead ends: 1147 [2022-02-23 20:56:45,459 INFO L226 Difference]: Without dead ends: 880 [2022-02-23 20:56:45,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1905 GetRequests, 1445 SyntacticMatches, 1 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75454 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=35111, Invalid=176949, Unknown=0, NotChecked=0, Total=212060 [2022-02-23 20:56:45,470 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 2503 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8264 mSolverCounterSat, 2044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 10308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2044 IncrementalHoareTripleChecker+Valid, 8264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:56:45,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 296 Invalid, 10308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2044 Valid, 8264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-02-23 20:56:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-02-23 20:56:45,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 619. [2022-02-23 20:56:45,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 496 states have (on average 1.0080645161290323) internal successors, (500), 497 states have internal predecessors, (500), 68 states have call successors, (68), 55 states have call predecessors, (68), 54 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-02-23 20:56:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 635 transitions. [2022-02-23 20:56:45,522 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 635 transitions. Word has length 658 [2022-02-23 20:56:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:56:45,522 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 635 transitions. [2022-02-23 20:56:45,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 200 states, 200 states have (on average 3.345) internal successors, (669), 198 states have internal predecessors, (669), 131 states have call successors, (133), 4 states have call predecessors, (133), 1 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-02-23 20:56:45,522 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 635 transitions. [2022-02-23 20:56:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2022-02-23 20:56:45,526 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:56:45,526 INFO L514 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:56:45,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-02-23 20:56:45,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-02-23 20:56:45,739 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:56:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:56:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash -154381940, now seen corresponding path program 77 times [2022-02-23 20:56:45,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:56:45,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79784786] [2022-02-23 20:56:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:56:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:56:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:56:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-02-23 20:56:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:56:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:56:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:56:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:56:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:56:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:56:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:56:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:56:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:56:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:56:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:56:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:56:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:56:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:56:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:56:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:56:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:56:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:56:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:56:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:56:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:56:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:56:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:56:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:56:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:56:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:56:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:56:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:56:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:56:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:56:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:56:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:56:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:56:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:56:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:56:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:56:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:56:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:56:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:56:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:56:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:56:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:56:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:56:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:56:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-02-23 20:56:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-02-23 20:56:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-02-23 20:56:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-02-23 20:56:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-02-23 20:56:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-02-23 20:56:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-02-23 20:56:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-02-23 20:56:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-02-23 20:56:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-02-23 20:56:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-02-23 20:56:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-02-23 20:56:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-02-23 20:56:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-02-23 20:56:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-02-23 20:56:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-02-23 20:56:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-02-23 20:56:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-02-23 20:56:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-02-23 20:56:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-02-23 20:56:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:56:49,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8388 proven. 4482 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-23 20:56:49,761 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:56:49,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79784786] [2022-02-23 20:56:49,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79784786] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:56:49,761 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264162549] [2022-02-23 20:56:49,761 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:56:49,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:56:49,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:56:49,762 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:56:49,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-23 20:56:50,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2022-02-23 20:56:50,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:56:50,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 134 conjunts are in the unsatisfiable core [2022-02-23 20:56:50,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:56:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-23 20:56:55,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:56:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21190 backedges. 8580 proven. 4290 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-23 20:56:56,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264162549] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:56:56,607 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:56:56,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 134, 134] total 203 [2022-02-23 20:56:56,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330661590] [2022-02-23 20:56:56,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:56:56,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2022-02-23 20:56:56,608 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:56:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2022-02-23 20:56:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9117, Invalid=31889, Unknown=0, NotChecked=0, Total=41006 [2022-02-23 20:56:56,611 INFO L87 Difference]: Start difference. First operand 619 states and 635 transitions. Second operand has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-02-23 20:57:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:57:03,572 INFO L93 Difference]: Finished difference Result 1156 states and 1370 transitions. [2022-02-23 20:57:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-23 20:57:03,572 INFO L78 Accepts]: Start accepts. Automaton has has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) Word has length 668 [2022-02-23 20:57:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:57:03,574 INFO L225 Difference]: With dead ends: 1156 [2022-02-23 20:57:03,574 INFO L226 Difference]: Without dead ends: 885 [2022-02-23 20:57:03,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1799 GetRequests, 1466 SyntacticMatches, 0 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30870 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=24794, Invalid=87096, Unknown=0, NotChecked=0, Total=111890 [2022-02-23 20:57:03,578 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 1561 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4037 mSolverCounterSat, 1236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 5273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1236 IncrementalHoareTripleChecker+Valid, 4037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:57:03,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1562 Valid, 211 Invalid, 5273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1236 Valid, 4037 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 20:57:03,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-02-23 20:57:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 621. [2022-02-23 20:57:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 498 states have (on average 1.0080321285140563) internal successors, (502), 499 states have internal predecessors, (502), 68 states have call successors, (68), 55 states have call predecessors, (68), 54 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-02-23 20:57:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 637 transitions. [2022-02-23 20:57:03,631 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 637 transitions. Word has length 668 [2022-02-23 20:57:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:57:03,632 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 637 transitions. [2022-02-23 20:57:03,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 203 states, 203 states have (on average 2.684729064039409) internal successors, (545), 202 states have internal predecessors, (545), 133 states have call successors, (135), 3 states have call predecessors, (135), 1 states have return successors, (132), 132 states have call predecessors, (132), 132 states have call successors, (132) [2022-02-23 20:57:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 637 transitions. [2022-02-23 20:57:03,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-02-23 20:57:03,635 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:57:03,636 INFO L514 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:57:03,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-02-23 20:57:03,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:03,836 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:57:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:57:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash -255257105, now seen corresponding path program 78 times [2022-02-23 20:57:03,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:57:03,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975068401] [2022-02-23 20:57:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:57:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:57:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:57:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:57:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:57:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:57:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:57:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:57:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:57:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:57:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:57:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:57:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:57:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:57:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:57:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:57:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:57:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:57:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:57:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:57:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:57:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:57:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:57:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:57:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:57:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:57:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:57:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:57:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:57:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:57:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:57:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:57:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:57:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:57:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:57:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:57:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:57:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:57:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:57:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:57:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:57:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:57:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:57:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:57:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:57:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:57:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:57:05,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:57:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:57:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-02-23 20:57:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-02-23 20:57:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-02-23 20:57:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-02-23 20:57:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-02-23 20:57:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-02-23 20:57:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-02-23 20:57:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-02-23 20:57:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-02-23 20:57:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-02-23 20:57:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-02-23 20:57:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-02-23 20:57:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-02-23 20:57:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-02-23 20:57:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-02-23 20:57:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-02-23 20:57:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-02-23 20:57:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-02-23 20:57:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-02-23 20:57:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:05,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4420 proven. 8582 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-23 20:57:05,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:57:05,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975068401] [2022-02-23 20:57:05,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975068401] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:57:05,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229640439] [2022-02-23 20:57:05,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:57:05,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:05,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:57:05,482 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:57:05,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-23 20:57:05,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2022-02-23 20:57:05,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:57:05,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 135 conjunts are in the unsatisfiable core [2022-02-23 20:57:05,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:57:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-23 20:57:06,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:57:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 21322 backedges. 4552 proven. 8450 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2022-02-23 20:57:07,467 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229640439] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:57:07,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:57:07,468 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71, 71] total 76 [2022-02-23 20:57:07,468 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354976439] [2022-02-23 20:57:07,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:57:07,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-02-23 20:57:07,468 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:57:07,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-02-23 20:57:07,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2431, Invalid=3269, Unknown=0, NotChecked=0, Total=5700 [2022-02-23 20:57:07,480 INFO L87 Difference]: Start difference. First operand 621 states and 637 transitions. Second operand has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-02-23 20:57:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:57:09,447 INFO L93 Difference]: Finished difference Result 640 states and 658 transitions. [2022-02-23 20:57:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-23 20:57:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Word has length 670 [2022-02-23 20:57:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:57:09,449 INFO L225 Difference]: With dead ends: 640 [2022-02-23 20:57:09,449 INFO L226 Difference]: Without dead ends: 638 [2022-02-23 20:57:09,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1533 SyntacticMatches, 1 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3807 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=7285, Invalid=14471, Unknown=0, NotChecked=0, Total=21756 [2022-02-23 20:57:09,452 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 315 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:57:09,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 134 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 20:57:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-02-23 20:57:09,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 633. [2022-02-23 20:57:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 507 states have (on average 1.0078895463510849) internal successors, (511), 508 states have internal predecessors, (511), 70 states have call successors, (70), 56 states have call predecessors, (70), 55 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-02-23 20:57:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 650 transitions. [2022-02-23 20:57:09,523 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 650 transitions. Word has length 670 [2022-02-23 20:57:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:57:09,524 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 650 transitions. [2022-02-23 20:57:09,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 4.815789473684211) internal successors, (366), 73 states have internal predecessors, (366), 68 states have call successors, (72), 4 states have call predecessors, (72), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2022-02-23 20:57:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 650 transitions. [2022-02-23 20:57:09,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2022-02-23 20:57:09,528 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:57:09,528 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:57:09,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-23 20:57:09,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:09,728 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:57:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:57:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1138548457, now seen corresponding path program 79 times [2022-02-23 20:57:09,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:57:09,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850744600] [2022-02-23 20:57:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:57:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:57:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:57:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-02-23 20:57:13,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:57:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:57:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:57:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:57:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:57:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:57:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:57:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:57:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:57:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:57:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:57:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:57:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:57:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:57:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:57:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:57:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:57:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:57:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:57:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:57:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:57:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:57:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:57:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:57:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:57:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:57:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:57:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:57:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:57:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:57:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:57:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:57:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:57:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:57:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:57:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:57:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:57:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:57:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:57:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:57:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:57:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:57:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:57:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:57:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:57:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-02-23 20:57:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-02-23 20:57:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-02-23 20:57:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-02-23 20:57:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-02-23 20:57:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-02-23 20:57:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-02-23 20:57:13,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-02-23 20:57:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-02-23 20:57:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-02-23 20:57:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-02-23 20:57:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-02-23 20:57:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-02-23 20:57:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-02-23 20:57:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-02-23 20:57:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-02-23 20:57:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-02-23 20:57:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-02-23 20:57:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-02-23 20:57:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-02-23 20:57:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-02-23 20:57:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 8914 proven. 4620 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-02-23 20:57:13,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:57:13,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850744600] [2022-02-23 20:57:13,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850744600] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:57:13,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871241604] [2022-02-23 20:57:13,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:57:13,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:57:13,922 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:57:13,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-23 20:57:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:14,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 136 conjunts are in the unsatisfiable core [2022-02-23 20:57:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:57:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9372 proven. 4422 refuted. 0 times theorem prover too weak. 8584 trivial. 0 not checked. [2022-02-23 20:57:19,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:57:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22378 backedges. 9110 proven. 4422 refuted. 0 times theorem prover too weak. 8846 trivial. 0 not checked. [2022-02-23 20:57:20,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871241604] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:57:20,850 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:57:20,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 136, 136] total 207 [2022-02-23 20:57:20,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395576845] [2022-02-23 20:57:20,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:57:20,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 207 states [2022-02-23 20:57:20,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:57:20,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2022-02-23 20:57:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9458, Invalid=33184, Unknown=0, NotChecked=0, Total=42642 [2022-02-23 20:57:20,854 INFO L87 Difference]: Start difference. First operand 633 states and 650 transitions. Second operand has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2022-02-23 20:57:27,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:57:27,972 INFO L93 Difference]: Finished difference Result 1184 states and 1402 transitions. [2022-02-23 20:57:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-02-23 20:57:27,972 INFO L78 Accepts]: Start accepts. Automaton has has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) Word has length 686 [2022-02-23 20:57:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:57:27,974 INFO L225 Difference]: With dead ends: 1184 [2022-02-23 20:57:27,974 INFO L226 Difference]: Without dead ends: 903 [2022-02-23 20:57:27,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1845 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 339 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32076 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=25607, Invalid=90333, Unknown=0, NotChecked=0, Total=115940 [2022-02-23 20:57:27,979 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1453 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 5211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 4223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-23 20:57:27,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 193 Invalid, 5211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-23 20:57:27,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-02-23 20:57:28,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 635. [2022-02-23 20:57:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 509 states have (on average 1.0078585461689586) internal successors, (513), 510 states have internal predecessors, (513), 70 states have call successors, (70), 56 states have call predecessors, (70), 55 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2022-02-23 20:57:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 652 transitions. [2022-02-23 20:57:28,034 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 652 transitions. Word has length 686 [2022-02-23 20:57:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:57:28,034 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 652 transitions. [2022-02-23 20:57:28,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 207 states, 207 states have (on average 2.710144927536232) internal successors, (561), 206 states have internal predecessors, (561), 136 states have call successors, (139), 3 states have call predecessors, (139), 2 states have return successors, (137), 136 states have call predecessors, (137), 136 states have call successors, (137) [2022-02-23 20:57:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 652 transitions. [2022-02-23 20:57:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2022-02-23 20:57:28,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:57:28,038 INFO L514 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 67, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:57:28,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-23 20:57:28,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2022-02-23 20:57:28,239 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:57:28,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:57:28,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1428507974, now seen corresponding path program 80 times [2022-02-23 20:57:28,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:57:28,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633905891] [2022-02-23 20:57:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:57:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:57:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:57:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-02-23 20:57:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:57:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:57:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:57:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:57:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:57:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:57:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:57:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:57:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:57:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:57:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:57:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:57:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:57:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:57:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:57:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:57:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:57:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:57:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:57:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:57:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:57:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:57:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:57:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:57:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:57:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:57:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:57:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:57:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:57:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:57:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:57:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:57:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:57:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:57:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:57:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:57:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:57:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:57:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:57:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:57:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:57:32,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:57:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:57:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:57:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:57:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:57:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:57:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-02-23 20:57:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-02-23 20:57:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-02-23 20:57:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-02-23 20:57:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-02-23 20:57:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-02-23 20:57:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-02-23 20:57:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-02-23 20:57:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-02-23 20:57:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-02-23 20:57:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-02-23 20:57:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-02-23 20:57:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-02-23 20:57:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-02-23 20:57:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-02-23 20:57:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-02-23 20:57:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-02-23 20:57:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-02-23 20:57:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-02-23 20:57:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 8914 proven. 4754 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-02-23 20:57:32,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:57:32,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633905891] [2022-02-23 20:57:32,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633905891] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:57:32,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166370163] [2022-02-23 20:57:32,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-23 20:57:32,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:32,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:57:32,476 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:57:32,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-23 20:57:32,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-23 20:57:32,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:57:32,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 138 conjunts are in the unsatisfiable core [2022-02-23 20:57:32,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:57:37,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-02-23 20:57:37,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:57:38,220 INFO L134 CoverageAnalysis]: Checked inductivity of 22512 backedges. 4690 proven. 8978 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2022-02-23 20:57:38,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166370163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:57:38,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:57:38,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 72, 72] total 209 [2022-02-23 20:57:38,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469631748] [2022-02-23 20:57:38,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:57:38,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 209 states [2022-02-23 20:57:38,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:57:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2022-02-23 20:57:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7182, Invalid=36290, Unknown=0, NotChecked=0, Total=43472 [2022-02-23 20:57:38,225 INFO L87 Difference]: Start difference. First operand 635 states and 652 transitions. Second operand has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-02-23 20:57:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:57:50,812 INFO L93 Difference]: Finished difference Result 1197 states and 1419 transitions. [2022-02-23 20:57:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-02-23 20:57:50,813 INFO L78 Accepts]: Start accepts. Automaton has has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) Word has length 688 [2022-02-23 20:57:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:57:50,814 INFO L225 Difference]: With dead ends: 1197 [2022-02-23 20:57:50,815 INFO L226 Difference]: Without dead ends: 918 [2022-02-23 20:57:50,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 1511 SyntacticMatches, 1 SemanticMatches, 480 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82609 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=38363, Invalid=193479, Unknown=0, NotChecked=0, Total=231842 [2022-02-23 20:57:50,828 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 2314 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9353 mSolverCounterSat, 1987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2315 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 11340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1987 IncrementalHoareTripleChecker+Valid, 9353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-23 20:57:50,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2315 Valid, 315 Invalid, 11340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1987 Valid, 9353 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-02-23 20:57:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-02-23 20:57:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 645. [2022-02-23 20:57:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 517 states have (on average 1.0077369439071566) internal successors, (521), 518 states have internal predecessors, (521), 71 states have call successors, (71), 57 states have call predecessors, (71), 56 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-02-23 20:57:50,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 662 transitions. [2022-02-23 20:57:50,927 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 662 transitions. Word has length 688 [2022-02-23 20:57:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:57:50,927 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 662 transitions. [2022-02-23 20:57:50,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 209 states, 209 states have (on average 3.3444976076555024) internal successors, (699), 207 states have internal predecessors, (699), 137 states have call successors, (139), 4 states have call predecessors, (139), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-02-23 20:57:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 662 transitions. [2022-02-23 20:57:50,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-02-23 20:57:50,931 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:57:50,931 INFO L514 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 68, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:57:50,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-02-23 20:57:51,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:51,132 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:57:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:57:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash 443238705, now seen corresponding path program 81 times [2022-02-23 20:57:51,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:57:51,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283202578] [2022-02-23 20:57:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:57:51,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:57:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:57:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-02-23 20:57:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-02-23 20:57:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-02-23 20:57:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-02-23 20:57:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-02-23 20:57:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-02-23 20:57:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-02-23 20:57:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-02-23 20:57:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-02-23 20:57:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-02-23 20:57:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-02-23 20:57:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-02-23 20:57:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-02-23 20:57:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-02-23 20:57:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-02-23 20:57:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-02-23 20:57:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-02-23 20:57:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-02-23 20:57:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-02-23 20:57:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-02-23 20:57:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2022-02-23 20:57:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-02-23 20:57:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-02-23 20:57:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-02-23 20:57:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-02-23 20:57:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-02-23 20:57:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-02-23 20:57:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-02-23 20:57:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2022-02-23 20:57:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2022-02-23 20:57:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2022-02-23 20:57:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2022-02-23 20:57:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2022-02-23 20:57:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2022-02-23 20:57:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2022-02-23 20:57:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2022-02-23 20:57:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2022-02-23 20:57:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2022-02-23 20:57:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 454 [2022-02-23 20:57:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2022-02-23 20:57:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2022-02-23 20:57:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2022-02-23 20:57:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2022-02-23 20:57:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2022-02-23 20:57:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2022-02-23 20:57:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 510 [2022-02-23 20:57:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2022-02-23 20:57:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2022-02-23 20:57:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 534 [2022-02-23 20:57:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 542 [2022-02-23 20:57:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 550 [2022-02-23 20:57:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2022-02-23 20:57:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2022-02-23 20:57:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2022-02-23 20:57:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2022-02-23 20:57:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 590 [2022-02-23 20:57:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 598 [2022-02-23 20:57:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2022-02-23 20:57:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2022-02-23 20:57:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 622 [2022-02-23 20:57:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2022-02-23 20:57:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-02-23 20:57:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2022-02-23 20:57:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2022-02-23 20:57:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2022-02-23 20:57:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2022-02-23 20:57:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2022-02-23 20:57:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2022-02-23 20:57:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:57:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 9183 proven. 4893 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-02-23 20:57:55,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:57:55,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283202578] [2022-02-23 20:57:55,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283202578] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:57:55,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160839358] [2022-02-23 20:57:55,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-23 20:57:55,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:57:55,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:57:55,505 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:57:55,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-23 20:57:55,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2022-02-23 20:57:55,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:57:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 140 conjunts are in the unsatisfiable core [2022-02-23 20:57:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:58:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-02-23 20:58:00,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:58:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23188 backedges. 4828 proven. 9248 refuted. 0 times theorem prover too weak. 9112 trivial. 0 not checked. [2022-02-23 20:58:01,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160839358] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:58:01,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:58:01,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 73, 73] total 212 [2022-02-23 20:58:01,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066268561] [2022-02-23 20:58:01,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:58:01,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 212 states [2022-02-23 20:58:01,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:58:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2022-02-23 20:58:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7391, Invalid=37341, Unknown=0, NotChecked=0, Total=44732 [2022-02-23 20:58:01,584 INFO L87 Difference]: Start difference. First operand 645 states and 662 transitions. Second operand has 212 states, 212 states have (on average 3.3443396226415096) internal successors, (709), 210 states have internal predecessors, (709), 139 states have call successors, (141), 4 states have call predecessors, (141), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2022-02-23 20:58:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:58:14,344 INFO L93 Difference]: Finished difference Result 1215 states and 1440 transitions. [2022-02-23 20:58:14,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2022-02-23 20:58:14,345 INFO L78 Accepts]: Start accepts. Automaton has has 212 states, 212 states have (on average 3.3443396226415096) internal successors, (709), 210 states have internal predecessors, (709), 139 states have call successors, (141), 4 states have call predecessors, (141), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) Word has length 698 [2022-02-23 20:58:14,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:58:14,347 INFO L225 Difference]: With dead ends: 1215 [2022-02-23 20:58:14,347 INFO L226 Difference]: Without dead ends: 932 [2022-02-23 20:58:14,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1533 SyntacticMatches, 1 SemanticMatches, 487 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85066 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=39479, Invalid=199153, Unknown=0, NotChecked=0, Total=238632 [2022-02-23 20:58:14,360 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 2197 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 8895 mSolverCounterSat, 1867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 10762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1867 IncrementalHoareTripleChecker+Valid, 8895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-23 20:58:14,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 308 Invalid, 10762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1867 Valid, 8895 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-23 20:58:14,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-02-23 20:58:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 655. [2022-02-23 20:58:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 525 states have (on average 1.0076190476190476) internal successors, (529), 526 states have internal predecessors, (529), 72 states have call successors, (72), 58 states have call predecessors, (72), 57 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2022-02-23 20:58:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 672 transitions. [2022-02-23 20:58:14,418 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 672 transitions. Word has length 698 [2022-02-23 20:58:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:58:14,418 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 672 transitions. [2022-02-23 20:58:14,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 212 states, 212 states have (on average 3.3443396226415096) internal successors, (709), 210 states have internal predecessors, (709), 139 states have call successors, (141), 4 states have call predecessors, (141), 1 states have return successors, (137), 137 states have call predecessors, (137), 137 states have call successors, (137) [2022-02-23 20:58:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 672 transitions. [2022-02-23 20:58:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2022-02-23 20:58:14,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:58:14,423 INFO L514 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 69, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:58:14,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-02-23 20:58:14,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:58:14,623 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:58:14,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:58:14,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2018854680, now seen corresponding path program 82 times [2022-02-23 20:58:14,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:58:14,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622948888] [2022-02-23 20:58:14,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:58:14,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:58:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:58:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-02-23 20:58:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-02-23 20:58:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-02-23 20:58:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-02-23 20:58:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-02-23 20:58:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-02-23 20:58:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-02-23 20:58:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-02-23 20:58:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-02-23 20:58:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-02-23 20:58:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-02-23 20:58:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-02-23 20:58:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-02-23 20:58:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-02-23 20:58:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-02-23 20:58:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-02-23 20:58:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-02-23 20:58:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-02-23 20:58:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-02-23 20:58:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-02-23 20:58:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2022-02-23 20:58:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2022-02-23 20:58:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2022-02-23 20:58:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2022-02-23 20:58:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2022-02-23 20:58:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2022-02-23 20:58:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-02-23 20:58:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2022-02-23 20:58:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2022-02-23 20:58:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2022-02-23 20:58:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2022-02-23 20:58:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2022-02-23 20:58:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2022-02-23 20:58:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2022-02-23 20:58:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2022-02-23 20:58:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 432 [2022-02-23 20:58:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2022-02-23 20:58:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2022-02-23 20:58:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2022-02-23 20:58:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2022-02-23 20:58:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2022-02-23 20:58:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 480 [2022-02-23 20:58:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2022-02-23 20:58:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2022-02-23 20:58:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2022-02-23 20:58:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2022-02-23 20:58:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2022-02-23 20:58:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 528 [2022-02-23 20:58:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 536 [2022-02-23 20:58:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2022-02-23 20:58:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 552 [2022-02-23 20:58:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2022-02-23 20:58:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2022-02-23 20:58:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 576 [2022-02-23 20:58:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2022-02-23 20:58:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 592 [2022-02-23 20:58:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 600 [2022-02-23 20:58:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2022-02-23 20:58:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2022-02-23 20:58:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2022-02-23 20:58:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 632 [2022-02-23 20:58:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2022-02-23 20:58:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 648 [2022-02-23 20:58:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 656 [2022-02-23 20:58:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2022-02-23 20:58:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2022-02-23 20:58:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2022-02-23 20:58:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2022-02-23 20:58:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2022-02-23 20:58:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 9456 proven. 5034 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-02-23 20:58:19,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:58:19,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622948888] [2022-02-23 20:58:19,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622948888] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:58:19,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124813795] [2022-02-23 20:58:19,129 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-23 20:58:19,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:58:19,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:58:19,131 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:58:19,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-23 20:58:19,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-23 20:58:19,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:58:19,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 142 conjunts are in the unsatisfiable core [2022-02-23 20:58:19,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:58:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 4968 proven. 9522 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-02-23 20:58:24,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:58:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 23874 backedges. 4968 proven. 9522 refuted. 0 times theorem prover too weak. 9384 trivial. 0 not checked. [2022-02-23 20:58:25,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124813795] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:58:25,211 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:58:25,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 74, 74] total 215 [2022-02-23 20:58:25,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099125152] [2022-02-23 20:58:25,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:58:25,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2022-02-23 20:58:25,212 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:58:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2022-02-23 20:58:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7603, Invalid=38407, Unknown=0, NotChecked=0, Total=46010 [2022-02-23 20:58:25,216 INFO L87 Difference]: Start difference. First operand 655 states and 672 transitions. Second operand has 215 states, 215 states have (on average 3.344186046511628) internal successors, (719), 213 states have internal predecessors, (719), 141 states have call successors, (143), 4 states have call predecessors, (143), 1 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2022-02-23 20:58:38,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:58:38,768 INFO L93 Difference]: Finished difference Result 1233 states and 1461 transitions. [2022-02-23 20:58:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-02-23 20:58:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 3.344186046511628) internal successors, (719), 213 states have internal predecessors, (719), 141 states have call successors, (143), 4 states have call predecessors, (143), 1 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) Word has length 708 [2022-02-23 20:58:38,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:58:38,770 INFO L225 Difference]: With dead ends: 1233 [2022-02-23 20:58:38,770 INFO L226 Difference]: Without dead ends: 946 [2022-02-23 20:58:38,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2050 GetRequests, 1555 SyntacticMatches, 1 SemanticMatches, 494 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87559 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=40611, Invalid=204909, Unknown=0, NotChecked=0, Total=245520 [2022-02-23 20:58:38,822 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 2132 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 10021 mSolverCounterSat, 1775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 11796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1775 IncrementalHoareTripleChecker+Valid, 10021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-23 20:58:38,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2133 Valid, 321 Invalid, 11796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1775 Valid, 10021 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-02-23 20:58:38,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-02-23 20:58:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 665. [2022-02-23 20:58:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 533 states have (on average 1.0075046904315197) internal successors, (537), 534 states have internal predecessors, (537), 73 states have call successors, (73), 59 states have call predecessors, (73), 58 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-02-23 20:58:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 682 transitions. [2022-02-23 20:58:38,883 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 682 transitions. Word has length 708 [2022-02-23 20:58:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:58:38,883 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 682 transitions. [2022-02-23 20:58:38,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 3.344186046511628) internal successors, (719), 213 states have internal predecessors, (719), 141 states have call successors, (143), 4 states have call predecessors, (143), 1 states have return successors, (139), 139 states have call predecessors, (139), 139 states have call successors, (139) [2022-02-23 20:58:38,884 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 682 transitions. [2022-02-23 20:58:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2022-02-23 20:58:38,888 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:58:38,888 INFO L514 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 70, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:58:38,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-02-23 20:58:39,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-02-23 20:58:39,088 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:58:39,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:58:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1754762785, now seen corresponding path program 83 times [2022-02-23 20:58:39,089 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:58:39,089 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488299792] [2022-02-23 20:58:39,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:58:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:58:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:58:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-02-23 20:58:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-02-23 20:58:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-02-23 20:58:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-02-23 20:58:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-02-23 20:58:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-02-23 20:58:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-02-23 20:58:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-02-23 20:58:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-02-23 20:58:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-02-23 20:58:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-02-23 20:58:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-02-23 20:58:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-02-23 20:58:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-02-23 20:58:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2022-02-23 20:58:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-02-23 20:58:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-02-23 20:58:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-02-23 20:58:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-02-23 20:58:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-02-23 20:58:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-02-23 20:58:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-02-23 20:58:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-02-23 20:58:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-02-23 20:58:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-02-23 20:58:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2022-02-23 20:58:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2022-02-23 20:58:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2022-02-23 20:58:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-02-23 20:58:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-02-23 20:58:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2022-02-23 20:58:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2022-02-23 20:58:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2022-02-23 20:58:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2022-02-23 20:58:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2022-02-23 20:58:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2022-02-23 20:58:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2022-02-23 20:58:43,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2022-02-23 20:58:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2022-02-23 20:58:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2022-02-23 20:58:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2022-02-23 20:58:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2022-02-23 20:58:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 490 [2022-02-23 20:58:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2022-02-23 20:58:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2022-02-23 20:58:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 514 [2022-02-23 20:58:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 522 [2022-02-23 20:58:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 530 [2022-02-23 20:58:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2022-02-23 20:58:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 546 [2022-02-23 20:58:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2022-02-23 20:58:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 562 [2022-02-23 20:58:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2022-02-23 20:58:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 578 [2022-02-23 20:58:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 586 [2022-02-23 20:58:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 594 [2022-02-23 20:58:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2022-02-23 20:58:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2022-02-23 20:58:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 618 [2022-02-23 20:58:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 626 [2022-02-23 20:58:43,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2022-02-23 20:58:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2022-02-23 20:58:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2022-02-23 20:58:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 658 [2022-02-23 20:58:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2022-02-23 20:58:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2022-02-23 20:58:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2022-02-23 20:58:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2022-02-23 20:58:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2022-02-23 20:58:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2022-02-23 20:58:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:58:43,739 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9733 proven. 5177 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-23 20:58:43,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:58:43,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488299792] [2022-02-23 20:58:43,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488299792] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:58:43,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462134897] [2022-02-23 20:58:43,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-23 20:58:43,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:58:43,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:58:43,740 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:58:43,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-23 20:58:44,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 71 check-sat command(s) [2022-02-23 20:58:44,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:58:44,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 144 conjunts are in the unsatisfiable core [2022-02-23 20:58:44,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:58:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9940 proven. 4970 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-23 20:58:50,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:58:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24570 backedges. 9940 proven. 4970 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-23 20:58:51,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462134897] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:58:51,560 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:58:51,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 144, 144] total 218 [2022-02-23 20:58:51,561 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113761762] [2022-02-23 20:58:51,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:58:51,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 218 states [2022-02-23 20:58:51,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:58:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2022-02-23 20:58:51,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10517, Invalid=36789, Unknown=0, NotChecked=0, Total=47306 [2022-02-23 20:58:51,565 INFO L87 Difference]: Start difference. First operand 665 states and 682 transitions. Second operand has 218 states, 218 states have (on average 2.68348623853211) internal successors, (585), 217 states have internal predecessors, (585), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2022-02-23 20:58:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:58:59,945 INFO L93 Difference]: Finished difference Result 1242 states and 1472 transitions. [2022-02-23 20:58:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-02-23 20:58:59,946 INFO L78 Accepts]: Start accepts. Automaton has has 218 states, 218 states have (on average 2.68348623853211) internal successors, (585), 217 states have internal predecessors, (585), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) Word has length 718 [2022-02-23 20:58:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:58:59,948 INFO L225 Difference]: With dead ends: 1242 [2022-02-23 20:58:59,948 INFO L226 Difference]: Without dead ends: 951 [2022-02-23 20:58:59,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1934 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 358 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35695 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=28624, Invalid=100616, Unknown=0, NotChecked=0, Total=129240 [2022-02-23 20:58:59,953 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 1653 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4809 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 5844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 4809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-23 20:58:59,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1654 Valid, 216 Invalid, 5844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 4809 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-23 20:58:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2022-02-23 20:59:00,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 667. [2022-02-23 20:59:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 535 states have (on average 1.0074766355140188) internal successors, (539), 536 states have internal predecessors, (539), 73 states have call successors, (73), 59 states have call predecessors, (73), 58 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-02-23 20:59:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 684 transitions. [2022-02-23 20:59:00,015 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 684 transitions. Word has length 718 [2022-02-23 20:59:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:59:00,015 INFO L470 AbstractCegarLoop]: Abstraction has 667 states and 684 transitions. [2022-02-23 20:59:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 218 states, 218 states have (on average 2.68348623853211) internal successors, (585), 217 states have internal predecessors, (585), 143 states have call successors, (145), 3 states have call predecessors, (145), 1 states have return successors, (142), 142 states have call predecessors, (142), 142 states have call successors, (142) [2022-02-23 20:59:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 684 transitions. [2022-02-23 20:59:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2022-02-23 20:59:00,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:59:00,020 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 71, 71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:59:00,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-23 20:59:00,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:59:00,220 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:59:00,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:59:00,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1006155650, now seen corresponding path program 84 times [2022-02-23 20:59:00,221 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:59:00,221 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137713653] [2022-02-23 20:59:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:59:00,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:59:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:59:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:59:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:59:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:59:02,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:59:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:59:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:59:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:59:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:59:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:59:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:59:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:59:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:59:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:59:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:59:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:59:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:59:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:59:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:59:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:59:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:59:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:59:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:59:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:59:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:59:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:59:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:59:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:59:02,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:59:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:59:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:59:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:59:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:59:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:59:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:59:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:59:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:59:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:59:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:59:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:59:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:59:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:59:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:59:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:59:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:59:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:59:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:59:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:59:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-02-23 20:59:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-02-23 20:59:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-02-23 20:59:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-02-23 20:59:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-02-23 20:59:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-02-23 20:59:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-02-23 20:59:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-02-23 20:59:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-02-23 20:59:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-02-23 20:59:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-02-23 20:59:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-02-23 20:59:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-02-23 20:59:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-02-23 20:59:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-02-23 20:59:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-02-23 20:59:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-02-23 20:59:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-02-23 20:59:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-02-23 20:59:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2022-02-23 20:59:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2022-02-23 20:59:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2022-02-23 20:59:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2022-02-23 20:59:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5110 proven. 9942 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-23 20:59:02,130 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:59:02,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137713653] [2022-02-23 20:59:02,130 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137713653] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:59:02,130 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721878188] [2022-02-23 20:59:02,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-23 20:59:02,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:59:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:59:02,131 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:59:02,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-23 20:59:02,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 72 check-sat command(s) [2022-02-23 20:59:02,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-23 20:59:02,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 145 conjunts are in the unsatisfiable core [2022-02-23 20:59:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:59:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5252 proven. 9800 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-23 20:59:03,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:59:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 24712 backedges. 5252 proven. 9800 refuted. 0 times theorem prover too weak. 9660 trivial. 0 not checked. [2022-02-23 20:59:04,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721878188] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:59:04,263 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:59:04,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 81 [2022-02-23 20:59:04,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062593456] [2022-02-23 20:59:04,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:59:04,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-02-23 20:59:04,264 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:59:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-02-23 20:59:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2791, Invalid=3689, Unknown=0, NotChecked=0, Total=6480 [2022-02-23 20:59:04,265 INFO L87 Difference]: Start difference. First operand 667 states and 684 transitions. Second operand has 81 states, 81 states have (on average 4.827160493827161) internal successors, (391), 78 states have internal predecessors, (391), 73 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-02-23 20:59:06,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 20:59:06,383 INFO L93 Difference]: Finished difference Result 686 states and 705 transitions. [2022-02-23 20:59:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-02-23 20:59:06,383 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.827160493827161) internal successors, (391), 78 states have internal predecessors, (391), 73 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Word has length 720 [2022-02-23 20:59:06,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 20:59:06,385 INFO L225 Difference]: With dead ends: 686 [2022-02-23 20:59:06,385 INFO L226 Difference]: Without dead ends: 684 [2022-02-23 20:59:06,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1805 GetRequests, 1648 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4272 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=8365, Invalid=16441, Unknown=0, NotChecked=0, Total=24806 [2022-02-23 20:59:06,387 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 334 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-23 20:59:06,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 124 Invalid, 2587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-23 20:59:06,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-02-23 20:59:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 679. [2022-02-23 20:59:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 544 states have (on average 1.0073529411764706) internal successors, (548), 545 states have internal predecessors, (548), 75 states have call successors, (75), 60 states have call predecessors, (75), 59 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-02-23 20:59:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 697 transitions. [2022-02-23 20:59:06,451 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 697 transitions. Word has length 720 [2022-02-23 20:59:06,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 20:59:06,451 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 697 transitions. [2022-02-23 20:59:06,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.827160493827161) internal successors, (391), 78 states have internal predecessors, (391), 73 states have call successors, (77), 4 states have call predecessors, (77), 1 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-02-23 20:59:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 697 transitions. [2022-02-23 20:59:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2022-02-23 20:59:06,455 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 20:59:06,456 INFO L514 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 72, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 20:59:06,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-02-23 20:59:06,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:59:06,674 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 20:59:06,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 20:59:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash -277136214, now seen corresponding path program 85 times [2022-02-23 20:59:06,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 20:59:06,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266751001] [2022-02-23 20:59:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 20:59:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 20:59:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 20:59:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-02-23 20:59:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-02-23 20:59:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-02-23 20:59:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-02-23 20:59:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-02-23 20:59:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-02-23 20:59:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-02-23 20:59:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-02-23 20:59:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-02-23 20:59:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-02-23 20:59:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-02-23 20:59:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-02-23 20:59:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-02-23 20:59:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-02-23 20:59:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-02-23 20:59:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-02-23 20:59:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2022-02-23 20:59:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-02-23 20:59:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-02-23 20:59:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2022-02-23 20:59:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-02-23 20:59:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-02-23 20:59:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-02-23 20:59:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-02-23 20:59:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-02-23 20:59:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-02-23 20:59:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2022-02-23 20:59:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-02-23 20:59:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2022-02-23 20:59:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2022-02-23 20:59:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-02-23 20:59:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-02-23 20:59:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-02-23 20:59:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2022-02-23 20:59:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2022-02-23 20:59:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2022-02-23 20:59:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2022-02-23 20:59:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2022-02-23 20:59:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2022-02-23 20:59:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 468 [2022-02-23 20:59:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 476 [2022-02-23 20:59:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2022-02-23 20:59:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 492 [2022-02-23 20:59:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 500 [2022-02-23 20:59:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 508 [2022-02-23 20:59:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2022-02-23 20:59:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 524 [2022-02-23 20:59:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 532 [2022-02-23 20:59:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2022-02-23 20:59:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 548 [2022-02-23 20:59:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 556 [2022-02-23 20:59:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2022-02-23 20:59:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 572 [2022-02-23 20:59:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 580 [2022-02-23 20:59:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 588 [2022-02-23 20:59:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2022-02-23 20:59:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 604 [2022-02-23 20:59:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2022-02-23 20:59:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 620 [2022-02-23 20:59:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 628 [2022-02-23 20:59:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2022-02-23 20:59:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 644 [2022-02-23 20:59:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2022-02-23 20:59:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2022-02-23 20:59:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2022-02-23 20:59:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2022-02-23 20:59:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2022-02-23 20:59:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2022-02-23 20:59:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2022-02-23 20:59:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2022-02-23 20:59:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2022-02-23 20:59:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2022-02-23 20:59:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,505 INFO L134 CoverageAnalysis]: Checked inductivity of 25848 backedges. 10299 proven. 5325 refuted. 0 times theorem prover too weak. 10224 trivial. 0 not checked. [2022-02-23 20:59:11,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 20:59:11,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266751001] [2022-02-23 20:59:11,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266751001] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-23 20:59:11,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160622471] [2022-02-23 20:59:11,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-23 20:59:11,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 20:59:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 20:59:11,506 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-23 20:59:11,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-02-23 20:59:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 20:59:11,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 146 conjunts are in the unsatisfiable core [2022-02-23 20:59:11,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 20:59:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 25848 backedges. 10792 proven. 5112 refuted. 0 times theorem prover too weak. 9944 trivial. 0 not checked. [2022-02-23 20:59:18,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 20:59:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25848 backedges. 10510 proven. 5112 refuted. 0 times theorem prover too weak. 10226 trivial. 0 not checked. [2022-02-23 20:59:19,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160622471] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-23 20:59:19,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-23 20:59:19,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 146, 146] total 222 [2022-02-23 20:59:19,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964226710] [2022-02-23 20:59:19,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-23 20:59:19,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2022-02-23 20:59:19,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 20:59:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2022-02-23 20:59:19,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10883, Invalid=38179, Unknown=0, NotChecked=0, Total=49062 [2022-02-23 20:59:19,509 INFO L87 Difference]: Start difference. First operand 679 states and 697 transitions. Second operand has 222 states, 222 states have (on average 2.7072072072072073) internal successors, (601), 221 states have internal predecessors, (601), 146 states have call successors, (149), 3 states have call predecessors, (149), 2 states have return successors, (147), 146 states have call predecessors, (147), 146 states have call successors, (147)