/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 15:43:13,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 15:43:13,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 15:43:13,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 15:43:13,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 15:43:13,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 15:43:13,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 15:43:13,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 15:43:13,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 15:43:13,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 15:43:13,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 15:43:13,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 15:43:13,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 15:43:13,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 15:43:13,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 15:43:13,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 15:43:13,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 15:43:13,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 15:43:13,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 15:43:13,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 15:43:13,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 15:43:13,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 15:43:13,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 15:43:13,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 15:43:13,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 15:43:13,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 15:43:13,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 15:43:13,420 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 15:43:13,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 15:43:13,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 15:43:13,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 15:43:13,421 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 15:43:13,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 15:43:13,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 15:43:13,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 15:43:13,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 15:43:13,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:43:13,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 15:43:13,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 15:43:13,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 15:43:13,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 15:43:13,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 15:43:13,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 15:43:13,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 15:43:13,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 15:43:13,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 15:43:13,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 15:43:13,425 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 15:43:13,425 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 15:43:13,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 15:43:13,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 15:43:13,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 15:43:13,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 15:43:13,661 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 15:43:13,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2.c [2022-01-10 15:43:13,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641b1ec90/154edd2868bd434b88eb68cde2028faa/FLAG8d5255e22 [2022-01-10 15:43:14,075 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 15:43:14,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2.c [2022-01-10 15:43:14,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641b1ec90/154edd2868bd434b88eb68cde2028faa/FLAG8d5255e22 [2022-01-10 15:43:14,091 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/641b1ec90/154edd2868bd434b88eb68cde2028faa [2022-01-10 15:43:14,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 15:43:14,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 15:43:14,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 15:43:14,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 15:43:14,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 15:43:14,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2d048d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14, skipping insertion in model container [2022-01-10 15:43:14,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 15:43:14,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 15:43:14,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2.c[587,600] [2022-01-10 15:43:14,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:43:14,310 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 15:43:14,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn2.c[587,600] [2022-01-10 15:43:14,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 15:43:14,356 INFO L208 MainTranslator]: Completed translation [2022-01-10 15:43:14,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14 WrapperNode [2022-01-10 15:43:14,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 15:43:14,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 15:43:14,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 15:43:14,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 15:43:14,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,396 INFO L137 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-01-10 15:43:14,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 15:43:14,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 15:43:14,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 15:43:14,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 15:43:14,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 15:43:14,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 15:43:14,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 15:43:14,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 15:43:14,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 15:43:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:43:14,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 15:43:14,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 15:43:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 15:43:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 15:43:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 15:43:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 15:43:14,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 15:43:14,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 15:43:14,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 15:43:14,549 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 15:43:14,550 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 15:43:14,763 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 15:43:14,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 15:43:14,768 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 15:43:14,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:43:14 BoogieIcfgContainer [2022-01-10 15:43:14,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 15:43:14,770 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 15:43:14,770 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 15:43:14,771 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 15:43:14,773 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:43:14" (1/1) ... [2022-01-10 15:43:14,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:43:14 BasicIcfg [2022-01-10 15:43:14,849 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 15:43:14,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 15:43:14,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 15:43:14,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 15:43:14,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:43:14" (1/4) ... [2022-01-10 15:43:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3c0e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:43:14, skipping insertion in model container [2022-01-10 15:43:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:43:14" (2/4) ... [2022-01-10 15:43:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3c0e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:43:14, skipping insertion in model container [2022-01-10 15:43:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:43:14" (3/4) ... [2022-01-10 15:43:14,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3c0e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 03:43:14, skipping insertion in model container [2022-01-10 15:43:14,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 03:43:14" (4/4) ... [2022-01-10 15:43:14,854 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn2.cTransformedIcfg [2022-01-10 15:43:14,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 15:43:14,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 15:43:14,895 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 15:43:14,900 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 15:43:14,900 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 15:43:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 15:43:14,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:43:14,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:43:14,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:43:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:43:14,918 INFO L85 PathProgramCache]: Analyzing trace with hash 751161390, now seen corresponding path program 1 times [2022-01-10 15:43:14,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:43:14,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273783793] [2022-01-10 15:43:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:14,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:43:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:43:15,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:15,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:43:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273783793] [2022-01-10 15:43:15,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273783793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:43:15,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:43:15,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 15:43:15,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655255362] [2022-01-10 15:43:15,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:43:15,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 15:43:15,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:43:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 15:43:15,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:43:15,151 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:43:15,163 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-01-10 15:43:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 15:43:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 15:43:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:43:15,170 INFO L225 Difference]: With dead ends: 38 [2022-01-10 15:43:15,170 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 15:43:15,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 15:43:15,181 INFO L933 BasicCegarLoop]: 24 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, 24 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 [2022-01-10 15:43:15,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 15:43:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 15:43:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 15:43:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:15,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 15:43:15,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-01-10 15:43:15,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:43:15,206 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 15:43:15,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 15:43:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 15:43:15,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:43:15,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:43:15,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 15:43:15,209 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:43:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:43:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1055369552, now seen corresponding path program 1 times [2022-01-10 15:43:15,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:43:15,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104521412] [2022-01-10 15:43:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:15,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:43:15,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:43:15,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27062188] [2022-01-10 15:43:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:15,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:15,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:43:15,328 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) [2022-01-10 15:43:15,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 15:43:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:43:15,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-10 15:43:15,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:43:15,595 INFO L353 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-01-10 15:43:15,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 81 [2022-01-10 15:43:15,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:15,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:15,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:43:15,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:15,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:15,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:43:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:15,862 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-01-10 15:43:15,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-01-10 15:43:15,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:15,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-01-10 15:43:16,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:16,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:43:16,142 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:43:16,196 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 15:43:16,197 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 121 treesize of output 79 [2022-01-10 15:43:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:16,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:43:16,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:43:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104521412] [2022-01-10 15:43:16,223 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:43:16,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27062188] [2022-01-10 15:43:16,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27062188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:43:16,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:43:16,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:43:16,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781076738] [2022-01-10 15:43:16,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:43:16,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:43:16,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:43:16,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:43:16,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:43:16,226 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:18,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:43:21,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:43:21,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:43:21,423 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-10 15:43:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 15:43:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 15:43:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:43:21,427 INFO L225 Difference]: With dead ends: 34 [2022-01-10 15:43:21,427 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 15:43:21,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:43:21,428 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:43:21,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 52 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 5.2s Time] [2022-01-10 15:43:21,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 15:43:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-01-10 15:43:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 15:43:21,432 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 15:43:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:43:21,432 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 15:43:21,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 15:43:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:43:21,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:43:21,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:43:21,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 15:43:21,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:21,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:43:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:43:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash 312554478, now seen corresponding path program 1 times [2022-01-10 15:43:21,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:43:21,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460336585] [2022-01-10 15:43:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:21,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:43:21,673 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:43:21,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591851263] [2022-01-10 15:43:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:21,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:43:21,675 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) [2022-01-10 15:43:21,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 15:43:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:43:21,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 15:43:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:43:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:21,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 15:43:21,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:43:21,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460336585] [2022-01-10 15:43:21,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:43:21,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591851263] [2022-01-10 15:43:21,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591851263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 15:43:21,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 15:43:21,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 15:43:21,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923831837] [2022-01-10 15:43:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 15:43:21,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 15:43:21,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:43:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 15:43:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:43:21,810 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:24,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:43:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:43:24,249 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-01-10 15:43:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 15:43:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 15:43:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:43:24,254 INFO L225 Difference]: With dead ends: 42 [2022-01-10 15:43:24,254 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 15:43:24,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 15:43:24,255 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 15:43:24,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 31 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 15:43:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 15:43:24,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2022-01-10 15:43:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-01-10 15:43:24,259 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-01-10 15:43:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:43:24,259 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-01-10 15:43:24,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-01-10 15:43:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 15:43:24,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:43:24,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:43:24,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 15:43:24,477 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,SelfDestructingSolverStorable2 [2022-01-10 15:43:24,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:43:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:43:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash -953919346, now seen corresponding path program 1 times [2022-01-10 15:43:24,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:43:24,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610141606] [2022-01-10 15:43:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:24,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:43:24,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:43:24,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600831397] [2022-01-10 15:43:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:24,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:24,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:43:24,546 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) [2022-01-10 15:43:24,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 15:43:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:43:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 15:43:24,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:43:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:24,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:43:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:31,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:43:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610141606] [2022-01-10 15:43:31,967 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:43:31,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600831397] [2022-01-10 15:43:31,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600831397] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:43:31,967 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:43:31,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 15:43:31,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747334349] [2022-01-10 15:43:31,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:43:31,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:43:31,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:43:31,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:43:31,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:43:31,968 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:34,029 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:43:36,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:43:36,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:43:36,316 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-01-10 15:43:36,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:43:36,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 15:43:36,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:43:36,317 INFO L225 Difference]: With dead ends: 37 [2022-01-10 15:43:36,318 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 15:43:36,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:43:36,318 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 15:43:36,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 2 Unknown, 12 Unchecked, 4.3s Time] [2022-01-10 15:43:36,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 15:43:36,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2022-01-10 15:43:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-10 15:43:36,323 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 14 [2022-01-10 15:43:36,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:43:36,323 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-10 15:43:36,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-10 15:43:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:43:36,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:43:36,323 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:43:36,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 15:43:36,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:36,536 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:43:36,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:43:36,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1017934828, now seen corresponding path program 1 times [2022-01-10 15:43:36,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:43:36,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198909104] [2022-01-10 15:43:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:36,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:43:36,556 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:43:36,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748813696] [2022-01-10 15:43:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:36,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:36,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:43:36,558 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) [2022-01-10 15:43:36,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 15:43:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:43:36,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 15:43:36,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:43:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:37,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:43:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:38,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:43:38,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198909104] [2022-01-10 15:43:38,486 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:43:38,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748813696] [2022-01-10 15:43:38,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748813696] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:43:38,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:43:38,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-01-10 15:43:38,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77321504] [2022-01-10 15:43:38,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:43:38,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 15:43:38,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:43:38,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 15:43:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:43:38,489 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:40,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:43:43,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-10 15:43:43,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:43:43,500 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-01-10 15:43:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 15:43:43,501 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 15:43:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:43:43,501 INFO L225 Difference]: With dead ends: 43 [2022-01-10 15:43:43,501 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 15:43:43,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 15:43:43,502 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-01-10 15:43:43,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 44 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 56 Invalid, 2 Unknown, 11 Unchecked, 5.0s Time] [2022-01-10 15:43:43,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 15:43:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-01-10 15:43:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-01-10 15:43:43,505 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2022-01-10 15:43:43,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:43:43,505 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-01-10 15:43:43,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:43:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-01-10 15:43:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:43:43,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:43:43,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:43:43,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 15:43:43,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:43,723 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:43:43,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:43:43,724 INFO L85 PathProgramCache]: Analyzing trace with hash -978045364, now seen corresponding path program 1 times [2022-01-10 15:43:43,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:43:43,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427030142] [2022-01-10 15:43:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:43,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:43:43,744 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:43:43,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843501716] [2022-01-10 15:43:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:43:43,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:43:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:43:43,745 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) [2022-01-10 15:43:43,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 15:43:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 15:43:44,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 15:43:44,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:43:44,087 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 15:43:44,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-01-10 15:43:44,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-01-10 15:43:44,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,101 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 27 [2022-01-10 15:43:44,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2022-01-10 15:43:44,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 55 [2022-01-10 15:43:44,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 15:43:44,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:43:44,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:43:44,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 73 [2022-01-10 15:43:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:43:44,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:43:48,869 WARN L838 $PredicateComparison]: unable to prove that (= (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (.cse1 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (+ (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)) (* (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616)) 4294967296))) (mod (let ((.cse2 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2) 18446744073709551616))) (+ (mod (* .cse2 |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 18446744073709551616) .cse2 1)) 18446744073709551616)) is different from false [2022-01-10 15:43:59,540 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (let ((.cse2 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2 4) 18446744073709551616) v_ArrVal_193))) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* 4294967296 (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616))) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse3) 18446744073709551616) 1 .cse3)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) is different from false [2022-01-10 15:44:01,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616)) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse2) 18446744073709551616) 1 .cse2)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) is different from false [2022-01-10 15:44:04,917 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (= (mod (let ((.cse0 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse0) 18446744073709551616) 1 .cse0)) 18446744073709551616) (let ((.cse1 (store (store (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| v_ArrVal_191) |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse2 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (select .cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2) 18446744073709551616)) (* (select .cse1 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2 4) 18446744073709551616)) 4294967296)))) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) is different from false [2022-01-10 15:44:05,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 15:44:05,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2022-01-10 15:44:05,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-10 15:44:05,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:44:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427030142] [2022-01-10 15:44:05,020 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:44:05,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843501716] [2022-01-10 15:44:05,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843501716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:44:05,021 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:44:05,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-01-10 15:44:05,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791276385] [2022-01-10 15:44:05,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:44:05,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 15:44:05,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:44:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 15:44:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=51, Unknown=7, NotChecked=68, Total=156 [2022-01-10 15:44:05,022 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:44:07,040 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1) (= (mod (div 1 1) 4294967296) (select .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (= (select |c_#validInt| 1) 1) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0) (forall ((v_ArrVal_191 (Array Int Int)) (v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (= (mod (let ((.cse1 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse1) 18446744073709551616) 1 .cse1)) 18446744073709551616) (let ((.cse2 (store (store (select (store |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~a~0#1.baseInt| v_ArrVal_191) |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse3 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (select .cse2 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse3) 18446744073709551616)) (* (select .cse2 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse3 4) 18446744073709551616)) 4294967296)))) (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))))) is different from false [2022-01-10 15:44:09,044 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 8) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 12) 18446744073709551616) v_ArrVal_193)) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616)) 4294967296) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse2 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse2) 18446744073709551616) 1 .cse2)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= (select .cse3 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (= (mod (div 1 1) 4294967296) (select .cse3 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0))) is different from false [2022-01-10 15:44:11,049 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|))) (and (forall ((v_ArrVal_194 Int) (v_ArrVal_193 Int) (|v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| 0)) (= (let ((.cse0 (let ((.cse2 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 18446744073709551616))) (store (store (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2) 18446744073709551616) v_ArrVal_194) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse2 4) 18446744073709551616) v_ArrVal_193))) (.cse1 (mod (* 8 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (* 4294967296 (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1 4) 18446744073709551616))) (select .cse0 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| .cse1) 18446744073709551616)))) (mod (let ((.cse3 (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|) 18446744073709551616))) (+ (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10| .cse3) 18446744073709551616) 1 .cse3)) 18446744073709551616)) (not (<= 0 |v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_10|)))) (not (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt| 1)) (= (select .cse4 (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 4) 18446744073709551616)) (mod (div 1 4294967296) 4294967296)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 1) (= (mod (div 1 1) 4294967296) (select .cse4 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.offsetInt| 0))) is different from false [2022-01-10 15:44:13,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 15:44:14,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:44:14,033 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2022-01-10 15:44:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 15:44:14,034 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 15:44:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:44:14,034 INFO L225 Difference]: With dead ends: 48 [2022-01-10 15:44:14,034 INFO L226 Difference]: Without dead ends: 46 [2022-01-10 15:44:14,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=55, Invalid=95, Unknown=10, NotChecked=182, Total=342 [2022-01-10 15:44:14,035 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:44:14,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 86 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 1 Unknown, 97 Unchecked, 2.2s Time] [2022-01-10 15:44:14,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-01-10 15:44:14,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2022-01-10 15:44:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:44:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-01-10 15:44:14,039 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2022-01-10 15:44:14,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:44:14,039 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-01-10 15:44:14,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:44:14,039 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-01-10 15:44:14,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 15:44:14,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:44:14,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:44:14,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 15:44:14,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:44:14,246 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:44:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:44:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2050448108, now seen corresponding path program 2 times [2022-01-10 15:44:14,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:44:14,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710503404] [2022-01-10 15:44:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:44:14,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:44:14,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:44:14,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405000214] [2022-01-10 15:44:14,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 15:44:14,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:44:14,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:44:14,279 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) [2022-01-10 15:44:14,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 15:44:14,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 15:44:14,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:44:14,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 15:44:14,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:44:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 15:44:14,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 15:44:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 15:44:21,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 15:44:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710503404] [2022-01-10 15:44:21,384 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 15:44:21,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405000214] [2022-01-10 15:44:21,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405000214] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 15:44:21,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 15:44:21,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-01-10 15:44:21,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232805202] [2022-01-10 15:44:21,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 15:44:21,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 15:44:21,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 15:44:21,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 15:44:21,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-10 15:44:21,386 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:44:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 15:44:21,662 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-01-10 15:44:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 15:44:21,662 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-10 15:44:21,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 15:44:21,665 INFO L225 Difference]: With dead ends: 35 [2022-01-10 15:44:21,665 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 15:44:21,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 15:44:21,666 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 15:44:21,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 11 Unchecked, 0.2s Time] [2022-01-10 15:44:21,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 15:44:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-01-10 15:44:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:44:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-10 15:44:21,675 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-01-10 15:44:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 15:44:21,676 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-10 15:44:21,676 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 15:44:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-10 15:44:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 15:44:21,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 15:44:21,676 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 15:44:21,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 15:44:21,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:44:21,881 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 15:44:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 15:44:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1606655114, now seen corresponding path program 2 times [2022-01-10 15:44:21,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 15:44:21,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990658993] [2022-01-10 15:44:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 15:44:21,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 15:44:21,913 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 15:44:21,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026059759] [2022-01-10 15:44:21,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 15:44:21,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 15:44:21,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 15:44:21,914 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) [2022-01-10 15:44:21,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 15:44:22,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 15:44:22,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 15:44:22,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 15:44:22,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 15:44:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 15:44:22,327 INFO L328 TraceCheckSpWp]: Computing backward predicates...