/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_SUM.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:22:24,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:22:24,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:22:24,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 02:22:24,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:22:24,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:22:24,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:22:24,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:22:24,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:22:24,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:22:24,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:22:24,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:22:24,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:22:24,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:22:24,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:22:24,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:22:24,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 02:22:24,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:22:24,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:22:24,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:22:24,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:22:24,524 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:22:24,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:22:24,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:22:24,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:22:24,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:22:24,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:22:24,526 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:22:24,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:22:24,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:22:24,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:22:24,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:22:24,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:22:24,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:22:24,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:22:24,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:22:24,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:22:24,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:22:24,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:22:24,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:22:24,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:22:24,530 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:22:24,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:22:24,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:22:24,531 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:22:24,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:22:24,532 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:22:24,532 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:22:24,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:22:24,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:22:24,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:22:24,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:22:24,786 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:22:24,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i [2022-01-11 02:22:24,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953eb8261/a2f54425f66843a3a03ddf8375831039/FLAG2cbbda0e0 [2022-01-11 02:22:25,208 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:22:25,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i [2022-01-11 02:22:25,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953eb8261/a2f54425f66843a3a03ddf8375831039/FLAG2cbbda0e0 [2022-01-11 02:22:25,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/953eb8261/a2f54425f66843a3a03ddf8375831039 [2022-01-11 02:22:25,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:22:25,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:22:25,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:22:25,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:22:25,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:22:25,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a2ac240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25, skipping insertion in model container [2022-01-11 02:22:25,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:22:25,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:22:25,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i[951,964] [2022-01-11 02:22:25,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:22:25,493 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:22:25,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i[951,964] [2022-01-11 02:22:25,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:22:25,530 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:22:25,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25 WrapperNode [2022-01-11 02:22:25,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:22:25,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:22:25,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:22:25,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:22:25,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,561 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-01-11 02:22:25,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:22:25,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:22:25,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:22:25,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:22:25,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:22:25,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:22:25,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:22:25,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:22:25,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:22:25,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:25,628 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) [2022-01-11 02:22:25,656 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 [2022-01-11 02:22:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:22:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:22:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:22:25,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:22:25,732 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:22:25,733 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:22:25,837 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:22:25,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:22:25,842 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 02:22:25,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:22:25 BoogieIcfgContainer [2022-01-11 02:22:25,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:22:25,848 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:22:25,848 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:22:25,849 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:22:25,851 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:22:25" (1/1) ... [2022-01-11 02:22:25,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:22:25 BasicIcfg [2022-01-11 02:22:25,901 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:22:25,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:22:25,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:22:25,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:22:25,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:22:25" (1/4) ... [2022-01-11 02:22:25,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b7abe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:22:25, skipping insertion in model container [2022-01-11 02:22:25,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:22:25" (2/4) ... [2022-01-11 02:22:25,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b7abe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:22:25, skipping insertion in model container [2022-01-11 02:22:25,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:22:25" (3/4) ... [2022-01-11 02:22:25,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b7abe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:22:25, skipping insertion in model container [2022-01-11 02:22:25,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:22:25" (4/4) ... [2022-01-11 02:22:25,907 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound10.iTransformedIcfg [2022-01-11 02:22:25,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:22:25,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 02:22:25,967 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:22:25,990 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 [2022-01-11 02:22:25,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 02:22:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 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) [2022-01-11 02:22:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-11 02:22:26,015 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:26,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:26,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:22:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1064975405, now seen corresponding path program 1 times [2022-01-11 02:22:26,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:26,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514690977] [2022-01-11 02:22:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:26,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:22:26,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:22:26,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514690977] [2022-01-11 02:22:26,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514690977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:22:26,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:22:26,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 02:22:26,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316857350] [2022-01-11 02:22:26,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:22:26,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 02:22:26,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:22:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 02:22:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 02:22:26,233 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-01-11 02:22:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:26,246 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2022-01-11 02:22:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 02:22:26,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-01-11 02:22:26,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:26,253 INFO L225 Difference]: With dead ends: 39 [2022-01-11 02:22:26,254 INFO L226 Difference]: Without dead ends: 17 [2022-01-11 02:22:26,256 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 [2022-01-11 02:22:26,260 INFO L933 BasicCegarLoop]: 23 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, 23 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 [2022-01-11 02:22:26,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:22:26,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-11 02:22:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-11 02:22:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) 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) [2022-01-11 02:22:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-11 02:22:26,292 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2022-01-11 02:22:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:26,292 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-11 02:22:26,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-01-11 02:22:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-11 02:22:26,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:22:26,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:26,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:26,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:22:26,295 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:22:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash -456124174, now seen corresponding path program 1 times [2022-01-11 02:22:26,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41561150] [2022-01-11 02:22:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:26,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:26,337 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:26,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [348767302] [2022-01-11 02:22:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:26,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:26,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:26,344 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) [2022-01-11 02:22:26,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 02:22:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:26,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-11 02:22:26,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:22:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:22:26,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:22:26,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:22:26,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41561150] [2022-01-11 02:22:26,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:22:26,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348767302] [2022-01-11 02:22:26,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348767302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:22:26,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:22:26,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 02:22:26,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533715674] [2022-01-11 02:22:26,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:22:26,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:22:26,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:22:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:22:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:22:26,694 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-01-11 02:22:26,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:26,782 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-01-11 02:22:26,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 02:22:26,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2022-01-11 02:22:26,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:26,784 INFO L225 Difference]: With dead ends: 32 [2022-01-11 02:22:26,784 INFO L226 Difference]: Without dead ends: 26 [2022-01-11 02:22:26,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:22:26,785 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 30 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:22:26,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 34 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:22:26,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-11 02:22:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-11 02:22:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 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) [2022-01-11 02:22:26,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-11 02:22:26,791 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2022-01-11 02:22:26,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:26,791 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-11 02:22:26,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-01-11 02:22:26,791 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-11 02:22:26,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-11 02:22:26,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:26,792 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:26,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:22:27,007 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 [2022-01-11 02:22:27,008 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:22:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash -222902643, now seen corresponding path program 1 times [2022-01-11 02:22:27,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:27,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342967523] [2022-01-11 02:22:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:27,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:27,023 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:27,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917150050] [2022-01-11 02:22:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:27,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:27,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:27,025 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) [2022-01-11 02:22:27,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 02:22:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:27,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 02:22:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:22:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 02:22:27,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:22:27,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:22:27,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342967523] [2022-01-11 02:22:27,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:22:27,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917150050] [2022-01-11 02:22:27,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917150050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:22:27,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:22:27,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 02:22:27,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289181954] [2022-01-11 02:22:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:22:27,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 02:22:27,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:22:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 02:22:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-11 02:22:27,288 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-01-11 02:22:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:27,432 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-01-11 02:22:27,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:22:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 11 [2022-01-11 02:22:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:27,434 INFO L225 Difference]: With dead ends: 37 [2022-01-11 02:22:27,434 INFO L226 Difference]: Without dead ends: 31 [2022-01-11 02:22:27,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-11 02:22:27,436 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 48 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:22:27,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 24 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:22:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-11 02:22:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2022-01-11 02:22:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 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) [2022-01-11 02:22:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-11 02:22:27,441 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2022-01-11 02:22:27,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:27,441 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-11 02:22:27,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-01-11 02:22:27,441 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-11 02:22:27,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-11 02:22:27,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:27,442 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:27,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:22:27,654 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 [2022-01-11 02:22:27,654 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:22:27,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1819570500, now seen corresponding path program 1 times [2022-01-11 02:22:27,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:27,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44446367] [2022-01-11 02:22:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:27,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:27,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:27,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654925853] [2022-01-11 02:22:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:27,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:27,675 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) [2022-01-11 02:22:27,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 02:22:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:27,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-11 02:22:27,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:22:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:22:27,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:22:27,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:22:27,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44446367] [2022-01-11 02:22:27,747 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:22:27,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654925853] [2022-01-11 02:22:27,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654925853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:22:27,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:22:27,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 02:22:27,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749213781] [2022-01-11 02:22:27,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:22:27,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 02:22:27,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:22:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 02:22:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:22:27,750 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-01-11 02:22:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:27,767 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-01-11 02:22:27,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 02:22:27,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 [2022-01-11 02:22:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:27,768 INFO L225 Difference]: With dead ends: 44 [2022-01-11 02:22:27,769 INFO L226 Difference]: Without dead ends: 24 [2022-01-11 02:22:27,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 02:22:27,770 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:22:27,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:22:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-11 02:22:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-11 02:22:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 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) [2022-01-11 02:22:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-11 02:22:27,774 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-01-11 02:22:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:27,775 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-11 02:22:27,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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) [2022-01-11 02:22:27,775 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-11 02:22:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-11 02:22:27,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:27,776 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:27,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 02:22:27,998 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 [2022-01-11 02:22:27,999 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:22:27,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1563495561, now seen corresponding path program 1 times [2022-01-11 02:22:27,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:28,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813192697] [2022-01-11 02:22:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:28,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:28,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:28,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771831220] [2022-01-11 02:22:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:28,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:28,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:28,022 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) [2022-01-11 02:22:28,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:22:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:22:28,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-11 02:22:28,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:22:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:22:28,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:22:33,186 WARN L860 $PredicateComparison]: unable to prove that (or (<= (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (not (<= (div (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296) 2) |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4|)) (= (mod (+ (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| 4294967295) 4294967296)) 4294967296) (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| (mod (+ (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296) 1) 4294967296)) 4294967296)) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (not (<= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|))) is different from true [2022-01-11 02:22:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-11 02:22:37,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:22:37,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813192697] [2022-01-11 02:22:37,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:22:37,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771831220] [2022-01-11 02:22:37,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771831220] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:22:37,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:22:37,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-01-11 02:22:37,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094470941] [2022-01-11 02:22:37,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:22:37,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-11 02:22:37,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:22:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-11 02:22:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2022-01-11 02:22:37,543 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2022-01-11 02:22:39,609 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (not (<= (div |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 2) |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4|)) (= (mod (+ (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| 4294967295) 4294967296)) 4294967296) (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| (mod (+ (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296) 1) 4294967296)) 4294967296)) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|) (= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 1) (= (mod (+ (mod (* |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|) (or (<= (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| Int)) (or (not (<= |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (not (<= (div (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296) 2) |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4|)) (= (mod (+ (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| 4294967295) 4294967296)) 4294967296) (mod (* |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_4| (mod (+ (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296) 1) 4294967296)) 4294967296)) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (not (<= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|))) (<= |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0) (= |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (<= 0 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|)) is different from false [2022-01-11 02:22:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:22:40,193 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-01-11 02:22:40,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 02:22:40,193 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) Word has length 16 [2022-01-11 02:22:40,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:22:40,194 INFO L225 Difference]: With dead ends: 51 [2022-01-11 02:22:40,194 INFO L226 Difference]: Without dead ends: 45 [2022-01-11 02:22:40,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=115, Invalid=271, Unknown=2, NotChecked=74, Total=462 [2022-01-11 02:22:40,195 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:22:40,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 70 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 38 Invalid, 0 Unknown, 65 Unchecked, 0.4s Time] [2022-01-11 02:22:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-11 02:22:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-01-11 02:22:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 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) [2022-01-11 02:22:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-01-11 02:22:40,201 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 16 [2022-01-11 02:22:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:22:40,201 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-01-11 02:22:40,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 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) [2022-01-11 02:22:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-01-11 02:22:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-11 02:22:40,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:22:40,202 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:22:40,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-11 02:22:40,422 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 [2022-01-11 02:22:40,422 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:22:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:22:40,423 INFO L85 PathProgramCache]: Analyzing trace with hash 288615054, now seen corresponding path program 2 times [2022-01-11 02:22:40,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:22:40,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922605839] [2022-01-11 02:22:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:22:40,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:22:40,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:22:40,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263767050] [2022-01-11 02:22:40,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:22:40,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:22:40,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:22:40,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:22:40,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:22:40,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:22:40,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:22:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-11 02:22:40,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:22:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:22:41,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:22:48,206 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) (let ((.cse1 (div .cse0 2))) (or (<= .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (not (<= |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (= |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| (mod (+ (mod (* .cse1 (mod (+ (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296) 1) 4294967296)) 4294967296) (mod (+ |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* 4294967295 .cse1) 4294967296)) 4294967296)) 4294967296)) (< |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| .cse1)))) is different from true [2022-01-11 02:23:03,239 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296))) (let ((.cse2 (mod (* 2 .cse0) 4294967296))) (let ((.cse1 (div .cse2 2))) (or (not (<= .cse0 |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)) (< |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| .cse1) (<= .cse2 |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) (= (mod (+ (mod (* .cse1 (mod (+ (mod (* 2 |c_ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) 4294967296) 1) 4294967296)) 4294967296) (mod (+ (mod (* .cse1 4294967295) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) 4294967296)) 4294967296) |c_ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))))) is different from true [2022-01-11 02:23:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-01-11 02:23:20,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:20,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922605839] [2022-01-11 02:23:20,318 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:20,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263767050] [2022-01-11 02:23:20,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263767050] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:23:20,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:23:20,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-01-11 02:23:20,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286899289] [2022-01-11 02:23:20,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:23:20,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-11 02:23:20,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-11 02:23:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=152, Unknown=2, NotChecked=54, Total=272 [2022-01-11 02:23:20,320 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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) [2022-01-11 02:23:25,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-11 02:23:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:25,660 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-01-11 02:23:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 02:23:25,660 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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 18 [2022-01-11 02:23:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:25,661 INFO L225 Difference]: With dead ends: 74 [2022-01-11 02:23:25,661 INFO L226 Difference]: Without dead ends: 68 [2022-01-11 02:23:25,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=246, Invalid=690, Unknown=2, NotChecked=118, Total=1056 [2022-01-11 02:23:25,662 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:25,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 100 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 85 Invalid, 1 Unknown, 99 Unchecked, 2.9s Time] [2022-01-11 02:23:25,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-11 02:23:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2022-01-11 02:23:25,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 46 states have internal predecessors, (55), 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) [2022-01-11 02:23:25,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-01-11 02:23:25,670 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 18 [2022-01-11 02:23:25,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:25,671 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-01-11 02:23:25,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 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) [2022-01-11 02:23:25,671 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-01-11 02:23:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-11 02:23:25,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:25,672 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:25,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:25,876 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 [2022-01-11 02:23:25,876 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash -805872813, now seen corresponding path program 3 times [2022-01-11 02:23:25,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:25,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606516753] [2022-01-11 02:23:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:25,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:25,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454048315] [2022-01-11 02:23:25,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:23:25,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:25,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:25,898 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) [2022-01-11 02:23:25,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:23:25,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-11 02:23:25,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:23:25,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-11 02:23:25,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 02:23:26,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:23:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 02:23:29,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:23:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606516753] [2022-01-11 02:23:29,429 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-11 02:23:29,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454048315] [2022-01-11 02:23:29,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454048315] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:23:29,430 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-11 02:23:29,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-11 02:23:29,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757343719] [2022-01-11 02:23:29,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-11 02:23:29,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 02:23:29,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:23:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 02:23:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:23:29,431 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 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) [2022-01-11 02:23:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:23:30,078 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2022-01-11 02:23:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 02:23:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 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) Word has length 20 [2022-01-11 02:23:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:23:30,079 INFO L225 Difference]: With dead ends: 60 [2022-01-11 02:23:30,079 INFO L226 Difference]: Without dead ends: 58 [2022-01-11 02:23:30,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-01-11 02:23:30,080 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:23:30,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 107 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2022-01-11 02:23:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-11 02:23:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2022-01-11 02:23:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 48 states have internal predecessors, (57), 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) [2022-01-11 02:23:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-01-11 02:23:30,087 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 20 [2022-01-11 02:23:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:23:30,088 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-01-11 02:23:30,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 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) [2022-01-11 02:23:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-01-11 02:23:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:23:30,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:23:30,089 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:23:30,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 02:23:30,291 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 [2022-01-11 02:23:30,292 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:23:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:23:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash -614521843, now seen corresponding path program 4 times [2022-01-11 02:23:30,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:23:30,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450125365] [2022-01-11 02:23:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:23:30,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:23:30,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-11 02:23:30,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363155505] [2022-01-11 02:23:30,304 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 02:23:30,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:23:30,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:23:30,305 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) [2022-01-11 02:23:30,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 02:23:30,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 02:23:30,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:23:30,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 02:23:30,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:23:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:23:30,493 INFO L328 TraceCheckSpWp]: Computing backward predicates...