/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_BITWISE.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:54:13,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:54:13,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:54:13,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:54:13,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:54:13,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:54:13,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:54:13,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:54:13,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:54:13,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:54:13,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:54:13,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:54:13,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:54:13,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:54:13,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:54:13,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:54:13,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 09:54:13,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:54:13,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:54:13,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:54:13,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 09:54:13,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:54:13,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:54:13,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:54:13,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:54:13,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:54:13,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:54:13,548 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:54:13,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:54:13,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:54:13,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:54:13,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:54:13,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:54:13,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:54:13,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:54:13,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:54:13,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:54:13,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:54:13,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:54:13,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:54:13,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:54:13,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:54:13,551 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:54:13,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:54:13,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:54:13,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:54:13,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:54:13,585 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:54:13,585 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:54:13,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:54:13,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:54:13,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:54:13,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:54:13,810 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:54:13,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2.c [2022-01-10 09:54:13,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8657c996f/9a05a2c449364767bddf248b9b81f6bb/FLAG2d3365a3a [2022-01-10 09:54:14,202 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:54:14,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn2.c [2022-01-10 09:54:14,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8657c996f/9a05a2c449364767bddf248b9b81f6bb/FLAG2d3365a3a [2022-01-10 09:54:14,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8657c996f/9a05a2c449364767bddf248b9b81f6bb [2022-01-10 09:54:14,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:54:14,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:54:14,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:54:14,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:54:14,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:54:14,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd7d2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14, skipping insertion in model container [2022-01-10 09:54:14,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:54:14,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:54:14,741 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/ifeqn2.c[589,602] [2022-01-10 09:54:14,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:54:14,779 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:54:14,786 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/ifeqn2.c[589,602] [2022-01-10 09:54:14,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:54:14,800 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:54:14,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14 WrapperNode [2022-01-10 09:54:14,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:54:14,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:54:14,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:54:14,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:54:14,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,821 INFO L137 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-01-10 09:54:14,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:54:14,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:54:14,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:54:14,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:54:14,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:54:14,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:54:14,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:54:14,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:54:14,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (1/1) ... [2022-01-10 09:54:14,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:54:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:54:14,871 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 09:54:14,873 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 09:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:54:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-01-10 09:54:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 09:54:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:54:14,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:54:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-01-10 09:54:14,946 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:54:14,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:54:15,215 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:54:15,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:54:15,219 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-10 09:54:15,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:54:15 BoogieIcfgContainer [2022-01-10 09:54:15,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:54:15,221 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:54:15,221 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:54:15,221 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:54:15,224 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:54:15" (1/1) ... [2022-01-10 09:54:15,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:54:15 BasicIcfg [2022-01-10 09:54:15,320 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:54:15,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:54:15,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:54:15,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:54:15,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:54:14" (1/4) ... [2022-01-10 09:54:15,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e00b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:54:15, skipping insertion in model container [2022-01-10 09:54:15,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:54:14" (2/4) ... [2022-01-10 09:54:15,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e00b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:54:15, skipping insertion in model container [2022-01-10 09:54:15,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:54:15" (3/4) ... [2022-01-10 09:54:15,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e00b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:54:15, skipping insertion in model container [2022-01-10 09:54:15,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:54:15" (4/4) ... [2022-01-10 09:54:15,326 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn2.cTransformedIcfg [2022-01-10 09:54:15,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:54:15,331 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 09:54:15,372 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:54:15,380 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 09:54:15,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 09:54:15,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 09:54:15,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:54:15,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:54:15,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:54:15,394 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:54:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:54:15,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1663889424, now seen corresponding path program 1 times [2022-01-10 09:54:15,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:54:15,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390308251] [2022-01-10 09:54:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:15,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:54:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:54:15,544 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 09:54:15,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:54:15,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390308251] [2022-01-10 09:54:15,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390308251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:54:15,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:54:15,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:54:15,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958090291] [2022-01-10 09:54:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:54:15,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:54:15,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:54:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:54:15,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:54:15,573 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 09:54:15,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:54:15,585 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-01-10 09:54:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:54:15,586 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 09:54:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:54:15,591 INFO L225 Difference]: With dead ends: 42 [2022-01-10 09:54:15,591 INFO L226 Difference]: Without dead ends: 19 [2022-01-10 09:54:15,593 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 09:54:15,599 INFO L933 BasicCegarLoop]: 28 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, 28 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 09:54:15,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:54:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-10 09:54:15,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-10 09:54:15,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 09:54:15,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-10 09:54:15,621 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2022-01-10 09:54:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:54:15,622 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-10 09:54:15,622 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 09:54:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-10 09:54:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 09:54:15,624 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:54:15,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:54:15,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:54:15,625 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:54:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:54:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1711127090, now seen corresponding path program 1 times [2022-01-10 09:54:15,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:54:15,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969205875] [2022-01-10 09:54:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:15,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:54:15,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:54:15,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729080574] [2022-01-10 09:54:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:15,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:54:15,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:54:15,693 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 09:54:15,694 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 09:54:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:54:15,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 09:54:15,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:54:16,204 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 09:54:16,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:54:16,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:54:16,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969205875] [2022-01-10 09:54:16,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:54:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729080574] [2022-01-10 09:54:16,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729080574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:54:16,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:54:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:54:16,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444296799] [2022-01-10 09:54:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:54:16,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:54:16,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:54:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:54:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:54:16,212 INFO L87 Difference]: Start difference. First operand 19 states and 23 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 09:54:18,314 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 09:54:20,474 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 09:54:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:54:20,625 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-01-10 09:54:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 09:54:20,626 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 09:54:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:54:20,627 INFO L225 Difference]: With dead ends: 49 [2022-01-10 09:54:20,627 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 09:54:20,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 09:54:20,628 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:54:20,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 34 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 09:54:20,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 09:54:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2022-01-10 09:54:20,631 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 09:54:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 09:54:20,632 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 09:54:20,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:54:20,632 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 09:54:20,632 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 09:54:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 09:54:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:54:20,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:54:20,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:54:20,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 09:54:20,843 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 09:54:20,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:54:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:54:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash 875960336, now seen corresponding path program 1 times [2022-01-10 09:54:20,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:54:20,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124308507] [2022-01-10 09:54:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:20,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:54:20,891 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:54:20,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440651953] [2022-01-10 09:54:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:20,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:54:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:54:20,894 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 09:54:20,895 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 09:54:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:54:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 09:54:21,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:54:21,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:54:21,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:54:21,099 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 27 [2022-01-10 09:54:21,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 09:54:21,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:54:21,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 09:54:21,203 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 09:54:21,204 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 148 treesize of output 86 [2022-01-10 09:54:21,233 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 09:54:21,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:54:23,597 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 (select |c_#memory_intInt| |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1.baseInt|)) (.cse3 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 8) 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))))) (or (< .cse0 0) (= .cse0 (mod (let ((.cse1 (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2) 18446744073709551616))) (+ (mod (* .cse1 |c_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 18446744073709551616) .cse1 1)) 18446744073709551616)))) is different from true [2022-01-10 09:54:25,071 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 154 treesize of output 146 [2022-01-10 09:54:25,089 INFO L353 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-01-10 09:54:25,090 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 5707 treesize of output 5035 [2022-01-10 09:54:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:54:27,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:54:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124308507] [2022-01-10 09:54:27,351 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:54:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440651953] [2022-01-10 09:54:27,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440651953] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:54:27,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:54:27,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2022-01-10 09:54:27,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905673716] [2022-01-10 09:54:27,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:54:27,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 09:54:27,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:54:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 09:54:27,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=47, Unknown=1, NotChecked=14, Total=90 [2022-01-10 09:54:27,355 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 09:54:29,422 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 09:54:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:54:29,713 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-01-10 09:54:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 09:54:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 18 [2022-01-10 09:54:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:54:29,716 INFO L225 Difference]: With dead ends: 41 [2022-01-10 09:54:29,717 INFO L226 Difference]: Without dead ends: 39 [2022-01-10 09:54:29,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=70, Unknown=1, NotChecked=18, Total=132 [2022-01-10 09:54:29,717 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:54:29,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 75 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 36 Invalid, 1 Unknown, 48 Unchecked, 2.3s Time] [2022-01-10 09:54:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-10 09:54:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-01-10 09:54:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 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 09:54:29,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-01-10 09:54:29,722 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2022-01-10 09:54:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:54:29,722 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-01-10 09:54:29,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 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 09:54:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-01-10 09:54:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 09:54:29,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:54:29,723 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:54:29,757 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 09:54:29,930 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 09:54:29,930 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:54:29,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:54:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1245794439, now seen corresponding path program 1 times [2022-01-10 09:54:29,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:54:29,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416012185] [2022-01-10 09:54:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:29,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:54:29,986 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:54:29,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69157077] [2022-01-10 09:54:29,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:29,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:54:29,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:54:29,991 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 09:54:29,993 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 09:54:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:54:30,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 09:54:30,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:54:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:54:30,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:54:43,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:54:43,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:54:43,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416012185] [2022-01-10 09:54:43,500 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:54:43,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69157077] [2022-01-10 09:54:43,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69157077] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:54:43,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:54:43,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 09:54:43,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435999562] [2022-01-10 09:54:43,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:54:43,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 09:54:43,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:54:43,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 09:54:43,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2022-01-10 09:54:43,501 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 09:54:45,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:54:47,741 WARN L534 Checker$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 09:54:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:54:48,948 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2022-01-10 09:54:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:54:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) Word has length 21 [2022-01-10 09:54:48,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:54:48,949 INFO L225 Difference]: With dead ends: 69 [2022-01-10 09:54:48,949 INFO L226 Difference]: Without dead ends: 47 [2022-01-10 09:54:48,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2022-01-10 09:54:48,950 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 09:54:48,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 48 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 2 Unknown, 43 Unchecked, 5.4s Time] [2022-01-10 09:54:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-10 09:54:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2022-01-10 09:54:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 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 09:54:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-01-10 09:54:48,955 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 21 [2022-01-10 09:54:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:54:48,955 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-01-10 09:54:48,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 09:54:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-01-10 09:54:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 09:54:48,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:54:48,956 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:54:48,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 09:54:49,156 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 09:54:49,157 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:54:49,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:54:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2119243019, now seen corresponding path program 1 times [2022-01-10 09:54:49,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:54:49,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398033634] [2022-01-10 09:54:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:49,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:54:49,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:54:49,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124641720] [2022-01-10 09:54:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:54:49,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:54:49,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:54:49,178 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 09:54:49,181 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 09:54:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:54:49,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 09:54:49,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:54:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:54:49,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:55:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 09:55:04,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:55:04,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398033634] [2022-01-10 09:55:04,244 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:55:04,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124641720] [2022-01-10 09:55:04,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124641720] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:55:04,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:55:04,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-10 09:55:04,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124244097] [2022-01-10 09:55:04,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:55:04,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 09:55:04,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:55:04,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 09:55:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2022-01-10 09:55:04,246 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 09:55:06,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:55:08,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:55:10,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 09:55:12,752 WARN L534 Checker$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 09:55:15,042 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 09:55:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:55:15,290 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-01-10 09:55:15,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:55:15,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 22 [2022-01-10 09:55:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:55:15,291 INFO L225 Difference]: With dead ends: 50 [2022-01-10 09:55:15,291 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 09:55:15,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2022-01-10 09:55:15,292 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:55:15,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 60 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 5 Unknown, 42 Unchecked, 11.0s Time] [2022-01-10 09:55:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 09:55:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-01-10 09:55:15,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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 09:55:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-01-10 09:55:15,300 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 22 [2022-01-10 09:55:15,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:55:15,300 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-01-10 09:55:15,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 09:55:15,300 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-01-10 09:55:15,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 09:55:15,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:55:15,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:55:15,317 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 09:55:15,501 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 09:55:15,501 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:55:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:55:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2042877812, now seen corresponding path program 1 times [2022-01-10 09:55:15,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:55:15,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137186735] [2022-01-10 09:55:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:15,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:55:15,532 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:55:15,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438448583] [2022-01-10 09:55:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:55:15,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:55:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:55:15,540 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 09:55:15,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process