/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:30:23,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:30:23,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:30:23,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-09 22:30:23,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-09 22:30:23,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-09 22:30:23,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-09 22:30:23,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-09 22:30:23,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-09 22:30:23,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-09 22:30:23,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-09 22:30:23,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-09 22:30:23,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-09 22:30:23,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-09 22:30:23,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-09 22:30:23,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-09 22:30:23,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-09 22:30:23,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-09 22:30:23,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-09 22:30:23,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-09 22:30:23,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-09 22:30:23,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-09 22:30:23,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-09 22:30:23,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-09 22:30:23,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-09 22:30:23,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:30:23,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:30:23,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:30:23,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:30:23,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:30:23,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:30:23,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:30:23,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:30:23,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:30:23,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:30:23,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:30:23,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:30:23,424 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:30:23,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:30:23,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:30:23,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:30:23,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:30:23,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:30:23,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:30:23,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:30:23,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:30:23,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:30:23,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:30:23,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:30:23,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:30:23,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:30:23,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:30:23,694 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:30:23,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2022-01-09 22:30:23,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca268385/5c8c60a56bcf42d6876453dcbcdd5a3f/FLAGd29cd72fb [2022-01-09 22:30:24,100 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:30:24,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c [2022-01-09 22:30:24,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca268385/5c8c60a56bcf42d6876453dcbcdd5a3f/FLAGd29cd72fb [2022-01-09 22:30:24,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ca268385/5c8c60a56bcf42d6876453dcbcdd5a3f [2022-01-09 22:30:24,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:30:24,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:30:24,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:30:24,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:30:24,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:30:24,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e602253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24, skipping insertion in model container [2022-01-09 22:30:24,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:30:24,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:30:24,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2022-01-09 22:30:24,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:30:24,702 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:30:24,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2022-01-09 22:30:24,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:30:24,741 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:30:24,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24 WrapperNode [2022-01-09 22:30:24,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:30:24,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:30:24,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:30:24,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:30:24,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,776 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-01-09 22:30:24,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:30:24,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:30:24,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:30:24,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:30:24,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:30:24,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:30:24,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:30:24,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:30:24,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (1/1) ... [2022-01-09 22:30:24,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:30:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:24,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-09 22:30:24,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-09 22:30:24,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:30:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-09 22:30:24,871 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-09 22:30:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-09 22:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:30:24,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 22:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-09 22:30:24,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-09 22:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 22:30:24,932 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:30:24,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:30:25,129 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:30:25,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:30:25,134 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 22:30:25,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:30:25 BoogieIcfgContainer [2022-01-09 22:30:25,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:30:25,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:30:25,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:30:25,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:30:25,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:30:24" (1/3) ... [2022-01-09 22:30:25,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77782d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:30:25, skipping insertion in model container [2022-01-09 22:30:25,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:30:24" (2/3) ... [2022-01-09 22:30:25,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77782d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:30:25, skipping insertion in model container [2022-01-09 22:30:25,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:30:25" (3/3) ... [2022-01-09 22:30:25,143 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2022-01-09 22:30:25,146 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:30:25,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:30:25,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:30:25,204 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:30:25,204 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:30:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:30:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-09 22:30:25,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:25,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:30:25,237 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash 826300405, now seen corresponding path program 1 times [2022-01-09 22:30:25,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:25,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509948040] [2022-01-09 22:30:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:25,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-09 22:30:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:25,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:25,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509948040] [2022-01-09 22:30:25,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509948040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:30:25,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:30:25,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-09 22:30:25,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246510193] [2022-01-09 22:30:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:30:25,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-09 22:30:25,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-09 22:30:25,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:30:25,467 INFO L87 Difference]: Start difference. First operand has 31 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:30:25,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:25,491 INFO L93 Difference]: Finished difference Result 59 states and 80 transitions. [2022-01-09 22:30:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-09 22:30:25,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-01-09 22:30:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:25,501 INFO L225 Difference]: With dead ends: 59 [2022-01-09 22:30:25,502 INFO L226 Difference]: Without dead ends: 27 [2022-01-09 22:30:25,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-09 22:30:25,512 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:25,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:30:25,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-09 22:30:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-09 22:30:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:30:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-01-09 22:30:25,546 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 22 [2022-01-09 22:30:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:25,546 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-01-09 22:30:25,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:30:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-01-09 22:30:25,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-09 22:30:25,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:25,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:30:25,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:30:25,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1977190927, now seen corresponding path program 1 times [2022-01-09 22:30:25,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031732375] [2022-01-09 22:30:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:25,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-09 22:30:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:25,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:30:25,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031732375] [2022-01-09 22:30:25,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031732375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:30:25,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:30:25,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-09 22:30:25,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196187407] [2022-01-09 22:30:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:30:25,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-09 22:30:25,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-09 22:30:25,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-01-09 22:30:25,975 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:30:26,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:26,260 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-01-09 22:30:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 22:30:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-01-09 22:30:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:26,264 INFO L225 Difference]: With dead ends: 48 [2022-01-09 22:30:26,264 INFO L226 Difference]: Without dead ends: 46 [2022-01-09 22:30:26,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-01-09 22:30:26,271 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 42 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:26,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 266 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:30:26,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-09 22:30:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2022-01-09 22:30:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-09 22:30:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2022-01-09 22:30:26,293 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 22 [2022-01-09 22:30:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:26,296 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2022-01-09 22:30:26,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-09 22:30:26,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-01-09 22:30:26,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-09 22:30:26,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:26,300 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] [2022-01-09 22:30:26,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-09 22:30:26,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:26,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash -212593580, now seen corresponding path program 1 times [2022-01-09 22:30:26,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:26,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103068985] [2022-01-09 22:30:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:26,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:26,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:26,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-01-09 22:30:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:26,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103068985] [2022-01-09 22:30:26,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103068985] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:26,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451842515] [2022-01-09 22:30:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:26,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:26,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:26,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:26,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:30:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-09 22:30:26,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:30:26,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:26,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451842515] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:30:26,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:30:26,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-01-09 22:30:26,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026461004] [2022-01-09 22:30:26,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:30:26,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-09 22:30:26,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-09 22:30:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-01-09 22:30:26,988 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:27,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:27,259 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2022-01-09 22:30:27,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-09 22:30:27,261 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-01-09 22:30:27,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:27,263 INFO L225 Difference]: With dead ends: 86 [2022-01-09 22:30:27,263 INFO L226 Difference]: Without dead ends: 67 [2022-01-09 22:30:27,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=178, Invalid=422, Unknown=0, NotChecked=0, Total=600 [2022-01-09 22:30:27,264 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 83 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:27,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 196 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:30:27,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-01-09 22:30:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 45. [2022-01-09 22:30:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 states have internal predecessors, (45), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-09 22:30:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-01-09 22:30:27,275 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 24 [2022-01-09 22:30:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:27,276 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-01-09 22:30:27,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-01-09 22:30:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-09 22:30:27,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:27,277 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] [2022-01-09 22:30:27,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:27,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:27,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1134867742, now seen corresponding path program 1 times [2022-01-09 22:30:27,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:27,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305851422] [2022-01-09 22:30:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:27,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-01-09 22:30:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:27,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:27,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305851422] [2022-01-09 22:30:27,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305851422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:27,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540413525] [2022-01-09 22:30:27,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:27,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:27,663 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:27,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:30:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:27,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-09 22:30:27,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:30:27,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:28,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540413525] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:30:28,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:30:28,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-01-09 22:30:28,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542427272] [2022-01-09 22:30:28,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:30:28,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-09 22:30:28,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-09 22:30:28,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-01-09 22:30:28,078 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:28,926 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2022-01-09 22:30:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-09 22:30:28,927 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-01-09 22:30:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:28,928 INFO L225 Difference]: With dead ends: 120 [2022-01-09 22:30:28,928 INFO L226 Difference]: Without dead ends: 101 [2022-01-09 22:30:28,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2022-01-09 22:30:28,930 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 147 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:28,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 360 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-09 22:30:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-01-09 22:30:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 49. [2022-01-09 22:30:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 40 states have internal predecessors, (52), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-09 22:30:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2022-01-09 22:30:28,945 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 25 [2022-01-09 22:30:28,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:28,945 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2022-01-09 22:30:28,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 18 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:28,946 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2022-01-09 22:30:28,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-09 22:30:28,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:28,946 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] [2022-01-09 22:30:28,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:29,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-09 22:30:29,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash 339404308, now seen corresponding path program 2 times [2022-01-09 22:30:29,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089609922] [2022-01-09 22:30:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:29,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:30:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:30:29,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089609922] [2022-01-09 22:30:29,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089609922] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:29,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735120717] [2022-01-09 22:30:29,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 22:30:29,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:29,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:29,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 22:30:29,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 22:30:29,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:30:29,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-09 22:30:29,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:29,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-09 22:30:29,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:29,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-01-09 22:30:30,159 INFO L353 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-01-09 22:30:30,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 16 [2022-01-09 22:30:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:30:30,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:31,838 INFO L353 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2022-01-09 22:30:31,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 437 treesize of output 386 [2022-01-09 22:30:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:30:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735120717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:30:32,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:30:32,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 35 [2022-01-09 22:30:32,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235433300] [2022-01-09 22:30:32,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:30:32,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-09 22:30:32,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:32,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-09 22:30:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1070, Unknown=2, NotChecked=0, Total=1190 [2022-01-09 22:30:32,244 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 35 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:30:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:32,838 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2022-01-09 22:30:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-09 22:30:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 26 [2022-01-09 22:30:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:32,840 INFO L225 Difference]: With dead ends: 124 [2022-01-09 22:30:32,840 INFO L226 Difference]: Without dead ends: 122 [2022-01-09 22:30:32,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=206, Invalid=1684, Unknown=2, NotChecked=0, Total=1892 [2022-01-09 22:30:32,841 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 109 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:32,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 539 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 404 Invalid, 0 Unknown, 244 Unchecked, 0.3s Time] [2022-01-09 22:30:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-01-09 22:30:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 64. [2022-01-09 22:30:32,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 54 states have internal predecessors, (72), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 22:30:32,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-01-09 22:30:32,875 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 26 [2022-01-09 22:30:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:32,877 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-01-09 22:30:32,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 29 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-09 22:30:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-01-09 22:30:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-09 22:30:32,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:32,883 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] [2022-01-09 22:30:32,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:33,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:33,096 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:33,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash -247401706, now seen corresponding path program 1 times [2022-01-09 22:30:33,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:33,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585335410] [2022-01-09 22:30:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:33,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-01-09 22:30:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:33,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:33,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585335410] [2022-01-09 22:30:33,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585335410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:33,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661820257] [2022-01-09 22:30:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:33,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:33,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:33,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:33,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 22:30:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:33,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-09 22:30:33,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:33,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-09 22:30:33,467 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-01-09 22:30:33,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-01-09 22:30:33,540 INFO L353 Elim1Store]: treesize reduction 65, result has 17.7 percent of original size [2022-01-09 22:30:33,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 26 [2022-01-09 22:30:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:30:33,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:34,222 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~y~0#1| Int) (v_ArrVal_48 Int)) (or (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.meminit_#ptr#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.meminit_#ptr#1.base|) (+ |c_ULTIMATE.start_#Ultimate.meminit_#ptr#1.offset| |c_ULTIMATE.start_#Ultimate.meminit_#t~loopctr18#1|) v_ArrVal_48)) |c_ULTIMATE.start_main_#t~malloc6#1.base|))) (<= (select .cse0 |c_ULTIMATE.start_main_#t~malloc6#1.offset|) (select .cse0 (+ (* |ULTIMATE.start_main_~y~0#1| 4) |c_ULTIMATE.start_main_#t~malloc6#1.offset|)))) (not (< 0 |ULTIMATE.start_main_~y~0#1|)) (< 1 |ULTIMATE.start_main_~y~0#1|) (not (<= 0 v_ArrVal_48)))) is different from false [2022-01-09 22:30:34,242 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-09 22:30:34,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 934 treesize of output 838 [2022-01-09 22:30:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-01-09 22:30:35,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661820257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:30:35,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:30:35,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-01-09 22:30:35,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670193627] [2022-01-09 22:30:35,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:30:35,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-09 22:30:35,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-09 22:30:35,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=293, Unknown=1, NotChecked=34, Total=380 [2022-01-09 22:30:35,590 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:36,084 INFO L93 Difference]: Finished difference Result 131 states and 177 transitions. [2022-01-09 22:30:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 22:30:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-01-09 22:30:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:36,086 INFO L225 Difference]: With dead ends: 131 [2022-01-09 22:30:36,086 INFO L226 Difference]: Without dead ends: 112 [2022-01-09 22:30:36,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=542, Unknown=1, NotChecked=48, Total=702 [2022-01-09 22:30:36,088 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 79 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:36,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 560 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 395 Invalid, 0 Unknown, 141 Unchecked, 0.2s Time] [2022-01-09 22:30:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-09 22:30:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 66. [2022-01-09 22:30:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 56 states have internal predecessors, (76), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 22:30:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2022-01-09 22:30:36,117 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 26 [2022-01-09 22:30:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:36,117 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2022-01-09 22:30:36,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2022-01-09 22:30:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-09 22:30:36,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:36,120 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:30:36,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:36,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:36,339 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1766570028, now seen corresponding path program 3 times [2022-01-09 22:30:36,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:36,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121606676] [2022-01-09 22:30:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:36,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-09 22:30:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:36,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:36,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121606676] [2022-01-09 22:30:36,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121606676] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:36,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395785442] [2022-01-09 22:30:36,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 22:30:36,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:36,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:36,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-09 22:30:36,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-09 22:30:36,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:30:36,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-09 22:30:36,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:37,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 22:30:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:37,147 INFO L353 Elim1Store]: treesize reduction 12, result has 68.4 percent of original size [2022-01-09 22:30:37,147 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 35 [2022-01-09 22:30:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-09 22:30:37,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:37,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395785442] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:37,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:30:37,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2022-01-09 22:30:37,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923461549] [2022-01-09 22:30:37,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:30:37,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-09 22:30:37,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-09 22:30:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-01-09 22:30:37,367 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 20 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:30:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:39,373 INFO L93 Difference]: Finished difference Result 237 states and 319 transitions. [2022-01-09 22:30:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-09 22:30:39,374 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 20 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2022-01-09 22:30:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:39,377 INFO L225 Difference]: With dead ends: 237 [2022-01-09 22:30:39,377 INFO L226 Difference]: Without dead ends: 218 [2022-01-09 22:30:39,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=273, Invalid=2589, Unknown=0, NotChecked=0, Total=2862 [2022-01-09 22:30:39,382 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 308 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:39,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 1411 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1223 Invalid, 0 Unknown, 317 Unchecked, 0.8s Time] [2022-01-09 22:30:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-09 22:30:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 62. [2022-01-09 22:30:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.38) internal successors, (69), 52 states have internal predecessors, (69), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 22:30:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 83 transitions. [2022-01-09 22:30:39,411 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 83 transitions. Word has length 28 [2022-01-09 22:30:39,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:39,411 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 83 transitions. [2022-01-09 22:30:39,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 20 states have internal predecessors, (34), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:30:39,412 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 83 transitions. [2022-01-09 22:30:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-09 22:30:39,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:39,412 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:30:39,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:39,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:39,617 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:39,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1242367927, now seen corresponding path program 4 times [2022-01-09 22:30:39,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558150961] [2022-01-09 22:30:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:39,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-09 22:30:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:39,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:39,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558150961] [2022-01-09 22:30:39,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558150961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:39,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844257701] [2022-01-09 22:30:39,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 22:30:39,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:39,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:39,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-09 22:30:39,818 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 22:30:39,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:30:39,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-09 22:30:39,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:42,212 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~y~0#1| Int) (|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~x~0#1_22| Int)) (let ((.cse0 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_4|))) (let ((.cse1 (select .cse0 (* |ULTIMATE.start_main_~y~0#1| 4)))) (and (<= (select .cse0 (* |v_ULTIMATE.start_main_~x~0#1_22| 4)) .cse1) (<= |v_ULTIMATE.start_main_~x~0#1_22| 1) (< |v_ULTIMATE.start_main_~x~0#1_22| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~y~0#1| (+ |v_ULTIMATE.start_main_~x~0#1_22| 1)) (<= (select .cse0 0) .cse1))))) is different from true [2022-01-09 22:30:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:46,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 22:30:46,640 INFO L353 Elim1Store]: treesize reduction 32, result has 60.0 percent of original size [2022-01-09 22:30:46,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 60 [2022-01-09 22:30:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-09 22:30:46,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:46,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844257701] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:46,914 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-09 22:30:46,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 24 [2022-01-09 22:30:46,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047192818] [2022-01-09 22:30:46,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-09 22:30:46,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-09 22:30:46,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:46,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-09 22:30:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=547, Unknown=1, NotChecked=46, Total=650 [2022-01-09 22:30:46,916 INFO L87 Difference]: Start difference. First operand 62 states and 83 transitions. Second operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:30:51,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:51,053 INFO L93 Difference]: Finished difference Result 191 states and 253 transitions. [2022-01-09 22:30:51,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-09 22:30:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2022-01-09 22:30:51,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:51,054 INFO L225 Difference]: With dead ends: 191 [2022-01-09 22:30:51,054 INFO L226 Difference]: Without dead ends: 172 [2022-01-09 22:30:51,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=460, Invalid=3965, Unknown=1, NotChecked=130, Total=4556 [2022-01-09 22:30:51,057 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 258 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 626 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:51,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 900 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 629 Invalid, 0 Unknown, 626 Unchecked, 0.5s Time] [2022-01-09 22:30:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-09 22:30:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 70. [2022-01-09 22:30:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 60 states have internal predecessors, (83), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 22:30:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 97 transitions. [2022-01-09 22:30:51,086 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 97 transitions. Word has length 28 [2022-01-09 22:30:51,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:51,086 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 97 transitions. [2022-01-09 22:30:51,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-09 22:30:51,087 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 97 transitions. [2022-01-09 22:30:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-09 22:30:51,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:51,087 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, 1] [2022-01-09 22:30:51,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:51,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:51,306 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1215381909, now seen corresponding path program 1 times [2022-01-09 22:30:51,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:51,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649032757] [2022-01-09 22:30:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:51,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-09 22:30:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-09 22:30:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:51,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:51,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649032757] [2022-01-09 22:30:51,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649032757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:30:51,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:30:51,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-09 22:30:51,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166505781] [2022-01-09 22:30:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:30:51,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-09 22:30:51,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:30:51,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-09 22:30:51,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:30:51,387 INFO L87 Difference]: Start difference. First operand 70 states and 97 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:30:51,493 INFO L93 Difference]: Finished difference Result 102 states and 138 transitions. [2022-01-09 22:30:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-09 22:30:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2022-01-09 22:30:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:30:51,494 INFO L225 Difference]: With dead ends: 102 [2022-01-09 22:30:51,494 INFO L226 Difference]: Without dead ends: 86 [2022-01-09 22:30:51,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2022-01-09 22:30:51,495 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:30:51,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 158 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:30:51,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-09 22:30:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2022-01-09 22:30:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 60 states have internal predecessors, (82), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-09 22:30:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2022-01-09 22:30:51,532 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2022-01-09 22:30:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:30:51,532 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2022-01-09 22:30:51,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-09 22:30:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2022-01-09 22:30:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-09 22:30:51,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:30:51,533 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:30:51,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-09 22:30:51,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:30:51,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:30:51,534 INFO L85 PathProgramCache]: Analyzing trace with hash 358634567, now seen corresponding path program 1 times [2022-01-09 22:30:51,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:30:51,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890261243] [2022-01-09 22:30:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:51,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:30:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-01-09 22:30:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-01-09 22:30:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-09 22:30:51,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:30:51,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890261243] [2022-01-09 22:30:51,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890261243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:30:51,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457375233] [2022-01-09 22:30:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:30:51,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:30:51,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:30:51,792 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:30:51,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-09 22:30:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:30:51,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-09 22:30:51,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:30:51,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-09 22:30:51,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:51,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-09 22:30:51,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:51,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:51,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-09 22:30:51,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-09 22:30:51,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-01-09 22:30:52,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-09 22:30:52,198 INFO L353 Elim1Store]: treesize reduction 10, result has 70.6 percent of original size [2022-01-09 22:30:52,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 39 [2022-01-09 22:30:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:30:52,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:30:59,368 INFO L353 Elim1Store]: treesize reduction 21, result has 43.2 percent of original size [2022-01-09 22:30:59,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13027 treesize of output 12210 [2022-01-09 22:30:59,773 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-09 22:30:59,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-09 22:30:59,974 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 [2022-01-09 22:30:59,975 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-09 22:30:59,978 INFO L158 Benchmark]: Toolchain (without parser) took 35457.20ms. Allocated memory was 179.3MB in the beginning and 298.8MB in the end (delta: 119.5MB). Free memory was 122.4MB in the beginning and 217.5MB in the end (delta: -95.0MB). Peak memory consumption was 149.6MB. Max. memory is 8.0GB. [2022-01-09 22:30:59,978 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-09 22:30:59,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.73ms. Allocated memory was 179.3MB in the beginning and 248.5MB in the end (delta: 69.2MB). Free memory was 122.3MB in the beginning and 221.2MB in the end (delta: -98.9MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-01-09 22:30:59,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.69ms. Allocated memory is still 248.5MB. Free memory was 221.2MB in the beginning and 219.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-09 22:30:59,979 INFO L158 Benchmark]: Boogie Preprocessor took 21.28ms. Allocated memory is still 248.5MB. Free memory was 219.1MB in the beginning and 218.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-09 22:30:59,979 INFO L158 Benchmark]: RCFGBuilder took 336.70ms. Allocated memory is still 248.5MB. Free memory was 218.1MB in the beginning and 205.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-09 22:30:59,979 INFO L158 Benchmark]: TraceAbstraction took 34840.45ms. Allocated memory was 248.5MB in the beginning and 298.8MB in the end (delta: 50.3MB). Free memory was 205.0MB in the beginning and 217.5MB in the end (delta: -12.5MB). Peak memory consumption was 163.2MB. Max. memory is 8.0GB. [2022-01-09 22:30:59,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 179.3MB. Free memory is still 138.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 220.73ms. Allocated memory was 179.3MB in the beginning and 248.5MB in the end (delta: 69.2MB). Free memory was 122.3MB in the beginning and 221.2MB in the end (delta: -98.9MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.69ms. Allocated memory is still 248.5MB. Free memory was 221.2MB in the beginning and 219.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.28ms. Allocated memory is still 248.5MB. Free memory was 219.1MB in the beginning and 218.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 336.70ms. Allocated memory is still 248.5MB. Free memory was 218.1MB in the beginning and 205.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 34840.45ms. Allocated memory was 248.5MB in the beginning and 298.8MB in the end (delta: 50.3MB). Free memory was 205.0MB in the beginning and 217.5MB in the end (delta: -12.5MB). Peak memory consumption was 163.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-09 22:31:00,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...