/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:55:01,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:55:01,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:55:01,289 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 08:55:01,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:55:01,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:55:01,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:55:01,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:55:01,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:55:01,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:55:01,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:55:01,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:55:01,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:55:01,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:55:01,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:55:01,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:55:01,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:55:01,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:55:01,332 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:55:01,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:55:01,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 08:55:01,357 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:55:01,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:55:01,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:55:01,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:55:01,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:55:01,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:55:01,360 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:55:01,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:55:01,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:55:01,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:55:01,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:55:01,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:55:01,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:55:01,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:55:01,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:55:01,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:55:01,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:55:01,364 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:55:01,364 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:55:01,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:55:01,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:55:01,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:55:01,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:55:01,540 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:55:01,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i [2022-01-10 08:55:01,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6e99163/9849e9d251aa47c791ac72b54a6e8668/FLAGc6fa84be4 [2022-01-10 08:55:01,932 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:55:01,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_valuebound10.i [2022-01-10 08:55:01,940 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6e99163/9849e9d251aa47c791ac72b54a6e8668/FLAGc6fa84be4 [2022-01-10 08:55:02,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c6e99163/9849e9d251aa47c791ac72b54a6e8668 [2022-01-10 08:55:02,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:55:02,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:55:02,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:55:02,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:55:02,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:55:02,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520a0c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02, skipping insertion in model container [2022-01-10 08:55:02,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:55:02,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:55:02,500 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] [2022-01-10 08:55:02,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:55:02,526 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:55:02,547 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] [2022-01-10 08:55:02,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:55:02,559 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:55:02,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02 WrapperNode [2022-01-10 08:55:02,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:55:02,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:55:02,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:55:02,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:55:02,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,605 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2022-01-10 08:55:02,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:55:02,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:55:02,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:55:02,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:55:02,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:55:02,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:55:02,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:55:02,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:55:02,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:55:02,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:55:02,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 08:55:02,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 08:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:55:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:55:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:55:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:55:02,776 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:55:02,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:55:02,872 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:55:02,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:55:02,877 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:55:02,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:55:02 BoogieIcfgContainer [2022-01-10 08:55:02,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:55:02,878 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:55:02,878 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:55:02,879 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:55:02,881 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:55:02" (1/1) ... [2022-01-10 08:55:02,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:55:02 BasicIcfg [2022-01-10 08:55:02,942 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:55:02,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:55:02,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:55:02,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:55:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:55:02" (1/4) ... [2022-01-10 08:55:02,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0b49e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:55:02, skipping insertion in model container [2022-01-10 08:55:02,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:55:02" (2/4) ... [2022-01-10 08:55:02,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0b49e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:55:02, skipping insertion in model container [2022-01-10 08:55:02,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:55:02" (3/4) ... [2022-01-10 08:55:02,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0b49e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:55:02, skipping insertion in model container [2022-01-10 08:55:02,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:55:02" (4/4) ... [2022-01-10 08:55:02,947 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound10.iTransformedIcfg [2022-01-10 08:55:02,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:55:02,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:55:02,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:55:02,982 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 08:55:02,982 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:55:02,990 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) [2022-01-10 08:55:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 08:55:02,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:55:02,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:55:02,994 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:55:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:55:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1064975405, now seen corresponding path program 1 times [2022-01-10 08:55:03,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:55:03,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711818331] [2022-01-10 08:55:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:03,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:55:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:55:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:55:03,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:55:03,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711818331] [2022-01-10 08:55:03,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711818331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:55:03,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:55:03,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:55:03,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864916221] [2022-01-10 08:55:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:55:03,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:55:03,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:55:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:55:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:55:03,122 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) [2022-01-10 08:55:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:55:03,131 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2022-01-10 08:55:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:55:03,133 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 [2022-01-10 08:55:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:55:03,137 INFO L225 Difference]: With dead ends: 39 [2022-01-10 08:55:03,138 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 08:55:03,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:55:03,142 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 [2022-01-10 08:55:03,142 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] [2022-01-10 08:55:03,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 08:55:03,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 08:55:03,160 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) [2022-01-10 08:55:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-10 08:55:03,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2022-01-10 08:55:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:55:03,164 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-10 08:55:03,164 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) [2022-01-10 08:55:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-10 08:55:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 08:55:03,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:55:03,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:55:03,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:55:03,165 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:55:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:55:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -456124174, now seen corresponding path program 1 times [2022-01-10 08:55:03,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:55:03,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194753631] [2022-01-10 08:55:03,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:03,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:55:03,181 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:55:03,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473276406] [2022-01-10 08:55:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:03,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:03,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:55:03,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:55:03,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 08:55:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:55:03,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 08:55:03,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:55:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:55:03,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:55:03,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:55:03,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194753631] [2022-01-10 08:55:03,442 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:55:03,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473276406] [2022-01-10 08:55:03,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473276406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:55:03,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:55:03,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:55:03,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343364709] [2022-01-10 08:55:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:55:03,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:55:03,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:55:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:55:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:55:03,445 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) [2022-01-10 08:55:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:55:03,513 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-01-10 08:55:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 08:55:03,514 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 [2022-01-10 08:55:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:55:03,514 INFO L225 Difference]: With dead ends: 32 [2022-01-10 08:55:03,514 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 08:55:03,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 08:55:03,516 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 [2022-01-10 08:55:03,516 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] [2022-01-10 08:55:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 08:55:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-01-10 08:55:03,519 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) [2022-01-10 08:55:03,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-01-10 08:55:03,520 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 9 [2022-01-10 08:55:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:55:03,520 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-01-10 08:55:03,520 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) [2022-01-10 08:55:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-01-10 08:55:03,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 08:55:03,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:55:03,521 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:55:03,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:55:03,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:03,747 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:55:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:55:03,748 INFO L85 PathProgramCache]: Analyzing trace with hash -222902643, now seen corresponding path program 1 times [2022-01-10 08:55:03,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:55:03,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730613163] [2022-01-10 08:55:03,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:03,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:55:03,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:55:03,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296418105] [2022-01-10 08:55:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:03,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:03,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:55:03,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:55:03,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 08:55:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:55:03,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 08:55:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:55:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:55:04,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:55:04,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:55:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730613163] [2022-01-10 08:55:04,030 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:55:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296418105] [2022-01-10 08:55:04,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296418105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:55:04,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:55:04,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:55:04,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636345678] [2022-01-10 08:55:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:55:04,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:55:04,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:55:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:55:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:55:04,033 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) [2022-01-10 08:55:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:55:04,146 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-01-10 08:55:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:55:04,147 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 [2022-01-10 08:55:04,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:55:04,149 INFO L225 Difference]: With dead ends: 37 [2022-01-10 08:55:04,149 INFO L226 Difference]: Without dead ends: 31 [2022-01-10 08:55:04,149 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 [2022-01-10 08:55:04,151 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 [2022-01-10 08:55:04,152 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] [2022-01-10 08:55:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-10 08:55:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2022-01-10 08:55:04,157 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) [2022-01-10 08:55:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-01-10 08:55:04,158 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 11 [2022-01-10 08:55:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:55:04,158 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-01-10 08:55:04,158 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) [2022-01-10 08:55:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-01-10 08:55:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 08:55:04,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:55:04,159 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:55:04,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 08:55:04,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 08:55:04,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:55:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:55:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1819570500, now seen corresponding path program 1 times [2022-01-10 08:55:04,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:55:04,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127276838] [2022-01-10 08:55:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:04,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:55:04,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:55:04,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207419203] [2022-01-10 08:55:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:04,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:55:04,406 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:55:04,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 08:55:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:55:04,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 08:55:04,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:55:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:55:04,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:55:04,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:55:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127276838] [2022-01-10 08:55:04,478 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:55:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207419203] [2022-01-10 08:55:04,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207419203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:55:04,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:55:04,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:55:04,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352733091] [2022-01-10 08:55:04,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:55:04,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:55:04,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:55:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:55:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:55:04,480 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) [2022-01-10 08:55:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:55:04,496 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-01-10 08:55:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:55:04,496 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 [2022-01-10 08:55:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:55:04,497 INFO L225 Difference]: With dead ends: 44 [2022-01-10 08:55:04,497 INFO L226 Difference]: Without dead ends: 24 [2022-01-10 08:55:04,497 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 [2022-01-10 08:55:04,498 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 [2022-01-10 08:55:04,498 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] [2022-01-10 08:55:04,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-01-10 08:55:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-01-10 08:55:04,500 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) [2022-01-10 08:55:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-01-10 08:55:04,501 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-01-10 08:55:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:55:04,501 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-01-10 08:55:04,501 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) [2022-01-10 08:55:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-01-10 08:55:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 08:55:04,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:55:04,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:55:04,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:55:04,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:04,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:55:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:55:04,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1563495561, now seen corresponding path program 1 times [2022-01-10 08:55:04,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:55:04,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846888424] [2022-01-10 08:55:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:04,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:55:04,733 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:55:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483212193] [2022-01-10 08:55:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:04,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:04,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:55:04,734 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:55:04,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 08:55:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:55:04,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 08:55:04,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:55:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:55:05,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:55:09,690 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 [2022-01-10 08:55:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-10 08:55:14,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:55:14,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846888424] [2022-01-10 08:55:14,044 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:55:14,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483212193] [2022-01-10 08:55:14,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483212193] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:55:14,044 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:55:14,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2022-01-10 08:55:14,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973182376] [2022-01-10 08:55:14,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:55:14,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 08:55:14,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:55:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 08:55:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=112, Unknown=1, NotChecked=22, Total=182 [2022-01-10 08:55:14,046 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) [2022-01-10 08:55:16,113 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 [2022-01-10 08:55:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:55:16,326 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-01-10 08:55:16,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 08:55:16,326 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 [2022-01-10 08:55:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:55:16,327 INFO L225 Difference]: With dead ends: 51 [2022-01-10 08:55:16,327 INFO L226 Difference]: Without dead ends: 45 [2022-01-10 08:55:16,327 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 [2022-01-10 08:55:16,328 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:55:16,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 70 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 38 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2022-01-10 08:55:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-01-10 08:55:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2022-01-10 08:55:16,331 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) [2022-01-10 08:55:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-01-10 08:55:16,331 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 16 [2022-01-10 08:55:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:55:16,332 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-01-10 08:55:16,332 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) [2022-01-10 08:55:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-01-10 08:55:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 08:55:16,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:55:16,332 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:55:16,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-10 08:55:16,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:16,551 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:55:16,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:55:16,552 INFO L85 PathProgramCache]: Analyzing trace with hash 288615054, now seen corresponding path program 2 times [2022-01-10 08:55:16,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:55:16,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248606608] [2022-01-10 08:55:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:55:16,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:55:16,563 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:55:16,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929906143] [2022-01-10 08:55:16,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:55:16,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:55:16,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:55:16,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:55:16,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 08:55:16,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:55:16,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:55:16,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-10 08:55:16,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:55:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:55:17,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:55:28,111 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 [2022-01-10 08:55:52,029 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 [2022-01-10 08:56:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-01-10 08:56:09,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248606608] [2022-01-10 08:56:09,008 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929906143] [2022-01-10 08:56:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929906143] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:56:09,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:56:09,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2022-01-10 08:56:09,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736722581] [2022-01-10 08:56:09,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:56:09,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 08:56:09,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 08:56:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=152, Unknown=2, NotChecked=54, Total=272 [2022-01-10 08:56:09,010 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) [2022-01-10 08:56:15,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 08:56:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:16,474 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-01-10 08:56:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 08:56:16,474 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 [2022-01-10 08:56:16,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:16,478 INFO L225 Difference]: With dead ends: 74 [2022-01-10 08:56:16,478 INFO L226 Difference]: Without dead ends: 68 [2022-01-10 08:56:16,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=246, Invalid=690, Unknown=2, NotChecked=118, Total=1056 [2022-01-10 08:56:16,479 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:16,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 100 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 85 Invalid, 1 Unknown, 99 Unchecked, 2.6s Time] [2022-01-10 08:56:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-10 08:56:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2022-01-10 08:56:16,489 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) [2022-01-10 08:56:16,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-01-10 08:56:16,491 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 18 [2022-01-10 08:56:16,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:16,492 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-01-10 08:56:16,492 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) [2022-01-10 08:56:16,492 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-01-10 08:56:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 08:56:16,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:16,493 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:16,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:16,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:16,697 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash -805872813, now seen corresponding path program 3 times [2022-01-10 08:56:16,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:16,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962426310] [2022-01-10 08:56:16,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:16,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:16,708 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:16,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560232532] [2022-01-10 08:56:16,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 08:56:16,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:16,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:16,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 08:56:16,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-10 08:56:16,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:56:16,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-10 08:56:16,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 08:56:17,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:56:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 08:56:19,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:19,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962426310] [2022-01-10 08:56:19,806 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:19,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560232532] [2022-01-10 08:56:19,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560232532] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:56:19,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:56:19,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-10 08:56:19,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849383351] [2022-01-10 08:56:19,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:56:19,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-10 08:56:19,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:19,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-10 08:56:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-10 08:56:19,807 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) [2022-01-10 08:56:20,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:20,333 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2022-01-10 08:56:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 08:56:20,333 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 [2022-01-10 08:56:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:20,336 INFO L225 Difference]: With dead ends: 60 [2022-01-10 08:56:20,336 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 08:56:20,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2022-01-10 08:56:20,337 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 [2022-01-10 08:56:20,337 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] [2022-01-10 08:56:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 08:56:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2022-01-10 08:56:20,355 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) [2022-01-10 08:56:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-01-10 08:56:20,355 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 20 [2022-01-10 08:56:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:20,355 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-01-10 08:56:20,356 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) [2022-01-10 08:56:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-01-10 08:56:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 08:56:20,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:20,356 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:20,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:20,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:20,574 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:20,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash -614521843, now seen corresponding path program 4 times [2022-01-10 08:56:20,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:20,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775099045] [2022-01-10 08:56:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:20,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:20,600 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:20,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174790895] [2022-01-10 08:56:20,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 08:56:20,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:20,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:20,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:20,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 08:56:20,653 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 08:56:20,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:56:20,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 08:56:20,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:56:20,765 INFO L328 TraceCheckSpWp]: Computing backward predicates...