/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_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound100.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:35:29,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:35:29,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:35:29,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 20:35:29,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:35:29,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:35:29,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:35:29,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:35:29,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:35:29,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:35:29,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:35:29,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:35:29,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:35:29,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:35:29,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:35:29,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:35:29,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:35:29,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:35:29,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:35:29,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:35:29,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:35:29,610 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:35:29,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:35:29,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:35:29,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:35:29,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:35:29,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:35:29,613 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:35:29,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:35:29,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:35:29,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:35:29,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:35:29,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:35:29,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:35:29,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:35:29,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:35:29,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:35:29,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:35:29,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:35:29,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:35:29,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:35:29,616 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:35:29,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:35:29,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:35:29,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:35:29,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:35:29,617 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:35:29,617 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:35:29,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:35:29,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:35:29,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:35:29,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:35:29,811 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:35:29,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound100.i [2022-01-10 20:35:29,858 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9149afc5a/712de80944e04ddebe3e90d297b83031/FLAG4c01cf5c1 [2022-01-10 20:35:30,177 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:35:30,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound100.i [2022-01-10 20:35:30,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9149afc5a/712de80944e04ddebe3e90d297b83031/FLAG4c01cf5c1 [2022-01-10 20:35:30,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9149afc5a/712de80944e04ddebe3e90d297b83031 [2022-01-10 20:35:30,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:35:30,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:35:30,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:35:30,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:35:30,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:35:30,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f3403a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30, skipping insertion in model container [2022-01-10 20:35:30,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:35:30,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:35:30,750 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/divbin_unwindbound100.i[950,963] [2022-01-10 20:35:30,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:35:30,765 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:35:30,772 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/divbin_unwindbound100.i[950,963] [2022-01-10 20:35:30,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:35:30,784 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:35:30,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30 WrapperNode [2022-01-10 20:35:30,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:35:30,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:35:30,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:35:30,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:35:30,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,804 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2022-01-10 20:35:30,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:35:30,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:35:30,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:35:30,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:35:30,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:35:30,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:35:30,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:35:30,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:35:30,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (1/1) ... [2022-01-10 20:35:30,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:35:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:30,837 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 20:35:30,840 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 20:35:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:35:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:35:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:35:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:35:30,922 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:35:30,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:35:31,073 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:35:31,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:35:31,077 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 20:35:31,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:35:31 BoogieIcfgContainer [2022-01-10 20:35:31,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:35:31,079 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:35:31,079 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:35:31,080 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:35:31,097 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:35:31" (1/1) ... [2022-01-10 20:35:31,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:35:31 BasicIcfg [2022-01-10 20:35:31,158 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:35:31,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:35:31,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:35:31,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:35:31,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:35:30" (1/4) ... [2022-01-10 20:35:31,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423a156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:35:31, skipping insertion in model container [2022-01-10 20:35:31,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:35:30" (2/4) ... [2022-01-10 20:35:31,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423a156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:35:31, skipping insertion in model container [2022-01-10 20:35:31,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:35:31" (3/4) ... [2022-01-10 20:35:31,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423a156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:35:31, skipping insertion in model container [2022-01-10 20:35:31,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:35:31" (4/4) ... [2022-01-10 20:35:31,163 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound100.iTransformedIcfg [2022-01-10 20:35:31,195 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:35:31,195 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 20:35:31,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:35:31,244 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 20:35:31,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 20:35:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:31,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:35:31,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:31,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:31,260 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:31,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2011965666, now seen corresponding path program 1 times [2022-01-10 20:35:31,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:31,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946002930] [2022-01-10 20:35:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:31,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:31,405 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 20:35:31,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:31,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946002930] [2022-01-10 20:35:31,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946002930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:35:31,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:35:31,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:35:31,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348463610] [2022-01-10 20:35:31,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:35:31,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:35:31,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:35:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:35:31,435 INFO L87 Difference]: Start difference. First operand has 25 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 20:35:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:31,446 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-01-10 20:35:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:35:31,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 20:35:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:31,455 INFO L225 Difference]: With dead ends: 47 [2022-01-10 20:35:31,455 INFO L226 Difference]: Without dead ends: 21 [2022-01-10 20:35:31,459 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 20:35:31,462 INFO L933 BasicCegarLoop]: 29 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, 29 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 20:35:31,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:35:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-01-10 20:35:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-01-10 20:35:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 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 20:35:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-01-10 20:35:31,488 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2022-01-10 20:35:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:31,488 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-01-10 20:35:31,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 20:35:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-01-10 20:35:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 20:35:31,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:31,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:31,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:35:31,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash -664712687, now seen corresponding path program 1 times [2022-01-10 20:35:31,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479266585] [2022-01-10 20:35:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:31,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:31,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:31,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434860881] [2022-01-10 20:35:31,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:31,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:31,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:31,541 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 20:35:31,542 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 20:35:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:31,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 20:35:31,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:31,727 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 20:35:31,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:35:31,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:31,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479266585] [2022-01-10 20:35:31,728 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:31,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434860881] [2022-01-10 20:35:31,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434860881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:35:31,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:35:31,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:35:31,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197569626] [2022-01-10 20:35:31,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:35:31,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:35:31,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:35:31,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:35:31,733 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:31,765 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-01-10 20:35:31,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:35:31,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-01-10 20:35:31,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:31,766 INFO L225 Difference]: With dead ends: 35 [2022-01-10 20:35:31,766 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 20:35:31,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:35:31,767 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:31,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:35:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 20:35:31,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 20:35:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-01-10 20:35:31,775 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-01-10 20:35:31,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:31,776 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-01-10 20:35:31,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-01-10 20:35:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 20:35:31,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:31,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:31,799 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 20:35:31,977 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 20:35:31,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:31,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:31,978 INFO L85 PathProgramCache]: Analyzing trace with hash 902759655, now seen corresponding path program 1 times [2022-01-10 20:35:31,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:31,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162705232] [2022-01-10 20:35:31,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:31,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:31,995 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:31,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352133999] [2022-01-10 20:35:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:31,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:32,001 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 20:35:32,003 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 20:35:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:32,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 20:35:32,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:32,330 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 20:35:32,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:35:32,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:32,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162705232] [2022-01-10 20:35:32,332 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:32,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352133999] [2022-01-10 20:35:32,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352133999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:35:32,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:35:32,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 20:35:32,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555818525] [2022-01-10 20:35:32,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:35:32,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:35:32,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:35:32,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:35:32,334 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 20:35:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:32,564 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-01-10 20:35:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:35:32,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2022-01-10 20:35:32,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:32,565 INFO L225 Difference]: With dead ends: 42 [2022-01-10 20:35:32,565 INFO L226 Difference]: Without dead ends: 35 [2022-01-10 20:35:32,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-01-10 20:35:32,566 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 83 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:32,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:35:32,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-01-10 20:35:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-01-10 20:35:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:32,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-01-10 20:35:32,569 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2022-01-10 20:35:32,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:32,570 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-01-10 20:35:32,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 20:35:32,570 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-01-10 20:35:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 20:35:32,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:32,570 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:32,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:35:32,779 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 20:35:32,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:32,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 794881803, now seen corresponding path program 1 times [2022-01-10 20:35:32,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:32,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107863983] [2022-01-10 20:35:32,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:32,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:32,795 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:32,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081399818] [2022-01-10 20:35:32,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:32,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:32,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:32,799 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 20:35:32,800 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 20:35:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:32,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 20:35:32,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:33,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:35:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:33,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:33,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107863983] [2022-01-10 20:35:33,091 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:33,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081399818] [2022-01-10 20:35:33,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081399818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:35:33,092 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:35:33,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-01-10 20:35:33,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795220269] [2022-01-10 20:35:33,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:35:33,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 20:35:33,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 20:35:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:35:33,093 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:33,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:33,253 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-01-10 20:35:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 20:35:33,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 20:35:33,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:33,254 INFO L225 Difference]: With dead ends: 76 [2022-01-10 20:35:33,254 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 20:35:33,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:35:33,255 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 36 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:33,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 111 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:35:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 20:35:33,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2022-01-10 20:35:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 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 20:35:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-01-10 20:35:33,260 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 15 [2022-01-10 20:35:33,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:33,260 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-01-10 20:35:33,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:33,261 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-01-10 20:35:33,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-10 20:35:33,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:33,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:33,279 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 20:35:33,481 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 20:35:33,482 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:33,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:33,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1094451411, now seen corresponding path program 1 times [2022-01-10 20:35:33,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:33,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552171351] [2022-01-10 20:35:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:33,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:33,511 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:33,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193407076] [2022-01-10 20:35:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:33,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:33,513 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 20:35:33,514 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 20:35:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:33,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 20:35:33,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:33,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:35:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:34,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:34,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552171351] [2022-01-10 20:35:34,200 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:34,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193407076] [2022-01-10 20:35:34,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193407076] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 20:35:34,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:35:34,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2022-01-10 20:35:34,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198966596] [2022-01-10 20:35:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:35:34,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:35:34,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:35:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-10 20:35:34,201 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 20:35:34,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:34,224 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-01-10 20:35:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:35:34,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 20:35:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:34,226 INFO L225 Difference]: With dead ends: 46 [2022-01-10 20:35:34,226 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 20:35:34,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:35:34,227 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:34,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2022-01-10 20:35:34,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 20:35:34,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2022-01-10 20:35:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 40 states have internal predecessors, (50), 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 20:35:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2022-01-10 20:35:34,240 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 16 [2022-01-10 20:35:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:34,240 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2022-01-10 20:35:34,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 20:35:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2022-01-10 20:35:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 20:35:34,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:34,241 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:34,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 20:35:34,444 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 20:35:34,445 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:34,445 INFO L85 PathProgramCache]: Analyzing trace with hash 431707999, now seen corresponding path program 1 times [2022-01-10 20:35:34,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:34,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443574811] [2022-01-10 20:35:34,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:34,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:34,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:34,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063881814] [2022-01-10 20:35:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:34,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:34,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:34,461 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 20:35:34,462 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 20:35:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:34,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:35:34,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:35,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:35:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:35,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:35,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443574811] [2022-01-10 20:35:35,234 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:35,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063881814] [2022-01-10 20:35:35,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063881814] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:35:35,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:35:35,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-01-10 20:35:35,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734547400] [2022-01-10 20:35:35,234 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:35:35,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 20:35:35,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:35,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 20:35:35,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-01-10 20:35:35,235 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:36,512 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2022-01-10 20:35:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 20:35:36,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 20:35:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:36,513 INFO L225 Difference]: With dead ends: 100 [2022-01-10 20:35:36,513 INFO L226 Difference]: Without dead ends: 96 [2022-01-10 20:35:36,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:35:36,514 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 70 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:36,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 186 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 28 Invalid, 0 Unknown, 11 Unchecked, 0.4s Time] [2022-01-10 20:35:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-01-10 20:35:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2022-01-10 20:35:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 78 states have internal predecessors, (98), 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 20:35:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2022-01-10 20:35:36,520 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 17 [2022-01-10 20:35:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:36,520 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2022-01-10 20:35:36,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:35:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2022-01-10 20:35:36,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 20:35:36,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:36,521 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:36,524 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 20:35:36,725 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 20:35:36,726 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1338236980, now seen corresponding path program 1 times [2022-01-10 20:35:36,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:36,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250449152] [2022-01-10 20:35:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:36,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:36,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:36,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284342441] [2022-01-10 20:35:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:36,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:36,742 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 20:35:36,744 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 20:35:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:36,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 20:35:36,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:36,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:35:36,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:36,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250449152] [2022-01-10 20:35:36,827 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:36,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284342441] [2022-01-10 20:35:36,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284342441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:35:36,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:35:36,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:35:36,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643354531] [2022-01-10 20:35:36,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:35:36,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:35:36,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:35:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:35:36,829 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 20:35:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:36,848 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2022-01-10 20:35:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:35:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 20:35:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:36,850 INFO L225 Difference]: With dead ends: 100 [2022-01-10 20:35:36,850 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 20:35:36,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 20:35:36,851 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:36,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:35:36,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 20:35:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-01-10 20:35:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 45 states have internal predecessors, (56), 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 20:35:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-01-10 20:35:36,865 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 19 [2022-01-10 20:35:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:36,865 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-01-10 20:35:36,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 20:35:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-01-10 20:35:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 20:35:36,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:36,866 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:36,884 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 20:35:37,079 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 20:35:37,079 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1288898718, now seen corresponding path program 1 times [2022-01-10 20:35:37,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843754628] [2022-01-10 20:35:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:37,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:37,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:37,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350980576] [2022-01-10 20:35:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:37,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:37,092 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 20:35:37,093 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 20:35:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:37,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 20:35:37,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:37,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:35:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:37,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:37,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843754628] [2022-01-10 20:35:37,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:37,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350980576] [2022-01-10 20:35:37,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350980576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:35:37,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:35:37,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-01-10 20:35:37,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907514558] [2022-01-10 20:35:37,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:35:37,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:35:37,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:35:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:35:37,203 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20:35:37,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:37,245 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2022-01-10 20:35:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:35:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20:35:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:37,246 INFO L225 Difference]: With dead ends: 81 [2022-01-10 20:35:37,246 INFO L226 Difference]: Without dead ends: 77 [2022-01-10 20:35:37,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:35:37,247 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 43 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:37,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 67 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:35:37,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-10 20:35:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2022-01-10 20:35:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.280701754385965) internal successors, (73), 58 states have internal predecessors, (73), 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 20:35:37,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2022-01-10 20:35:37,251 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 20 [2022-01-10 20:35:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:37,251 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2022-01-10 20:35:37,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20:35:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2022-01-10 20:35:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 20:35:37,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:37,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:37,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 20:35:37,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:37,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1635152390, now seen corresponding path program 1 times [2022-01-10 20:35:37,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495794969] [2022-01-10 20:35:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:37,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:37,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146542229] [2022-01-10 20:35:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:37,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:37,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:37,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:35:37,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 20:35:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:37,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-10 20:35:37,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 20:35:37,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:35:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 20:35:38,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:35:38,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495794969] [2022-01-10 20:35:38,158 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:35:38,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146542229] [2022-01-10 20:35:38,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146542229] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:35:38,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:35:38,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-01-10 20:35:38,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551646196] [2022-01-10 20:35:38,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:35:38,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 20:35:38,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:35:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 20:35:38,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-10 20:35:38,160 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 20:35:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:35:38,254 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2022-01-10 20:35:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 20:35:38,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 20:35:38,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:35:38,255 INFO L225 Difference]: With dead ends: 71 [2022-01-10 20:35:38,255 INFO L226 Difference]: Without dead ends: 69 [2022-01-10 20:35:38,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:35:38,256 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:35:38,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 94 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2022-01-10 20:35:38,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-01-10 20:35:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2022-01-10 20:35:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 64 states have internal predecessors, (81), 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 20:35:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2022-01-10 20:35:38,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 22 [2022-01-10 20:35:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:35:38,262 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2022-01-10 20:35:38,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 20:35:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2022-01-10 20:35:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 20:35:38,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:35:38,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:35:38,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 20:35:38,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-10 20:35:38,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:35:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:35:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1634228869, now seen corresponding path program 1 times [2022-01-10 20:35:38,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:35:38,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442565348] [2022-01-10 20:35:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:38,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:35:38,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:35:38,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130711632] [2022-01-10 20:35:38,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:35:38,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:35:38,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:35:38,488 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:35:38,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-10 20:35:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:35:38,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 20:35:38,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:35:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:35:47,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:36:02,043 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22| Int)) (or (not (<= |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22|)) (<= (div (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22|) 4294967296) 2) |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22|))) is different from false [2022-01-10 20:36:04,156 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22| Int)) (or (not (<= |c_ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22|)) (<= (div (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22|) 4294967296) 2) |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_22|))) is different from true [2022-01-10 20:36:16,946 WARN L228 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 20:36:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:36:16,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:36:16,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442565348] [2022-01-10 20:36:16,979 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:36:16,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130711632] [2022-01-10 20:36:16,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130711632] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:36:16,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:36:16,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 20:36:16,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366803193] [2022-01-10 20:36:16,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:36:16,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:36:16,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:36:16,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:36:16,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=77, Unknown=9, NotChecked=18, Total=132 [2022-01-10 20:36:16,982 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 20:36:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:36:29,807 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2022-01-10 20:36:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 20:36:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 20:36:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:36:29,808 INFO L225 Difference]: With dead ends: 105 [2022-01-10 20:36:29,808 INFO L226 Difference]: Without dead ends: 85 [2022-01-10 20:36:29,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=56, Invalid=145, Unknown=13, NotChecked=26, Total=240 [2022-01-10 20:36:29,809 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:36:29,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 200 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 100 Unchecked, 0.1s Time] [2022-01-10 20:36:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-10 20:36:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2022-01-10 20:36:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 68 states have internal predecessors, (84), 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 20:36:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2022-01-10 20:36:29,814 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 22 [2022-01-10 20:36:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:36:29,814 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2022-01-10 20:36:29,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 20:36:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2022-01-10 20:36:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 20:36:29,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:36:29,815 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:36:29,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-10 20:36:30,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 20:36:30,015 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:36:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:36:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 849846834, now seen corresponding path program 1 times [2022-01-10 20:36:30,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:36:30,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122192683] [2022-01-10 20:36:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:36:30,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:36:30,024 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:36:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056963514] [2022-01-10 20:36:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:36:30,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:36:30,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:36:30,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:36:30,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-10 20:36:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:36:30,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 20:36:30,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:36:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:36:31,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:36:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:36:31,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:36:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122192683] [2022-01-10 20:36:31,672 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:36:31,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056963514] [2022-01-10 20:36:31,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056963514] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:36:31,672 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:36:31,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 20:36:31,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111938654] [2022-01-10 20:36:31,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:36:31,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:36:31,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:36:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:36:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:36:31,673 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 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 20:36:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:36:32,080 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2022-01-10 20:36:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 20:36:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 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 23 [2022-01-10 20:36:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:36:32,082 INFO L225 Difference]: With dead ends: 94 [2022-01-10 20:36:32,082 INFO L226 Difference]: Without dead ends: 90 [2022-01-10 20:36:32,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:36:32,082 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:36:32,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 222 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-01-10 20:36:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-01-10 20:36:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2022-01-10 20:36:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 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 20:36:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2022-01-10 20:36:32,088 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 23 [2022-01-10 20:36:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:36:32,088 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2022-01-10 20:36:32,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 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 20:36:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2022-01-10 20:36:32,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 20:36:32,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:36:32,089 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:36:32,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-10 20:36:32,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 20:36:32,296 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:36:32,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:36:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1377051269, now seen corresponding path program 1 times [2022-01-10 20:36:32,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:36:32,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704528816] [2022-01-10 20:36:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:36:32,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:36:32,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:36:32,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520453687] [2022-01-10 20:36:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:36:32,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:36:32,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:36:32,309 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:36:32,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-10 20:36:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:36:32,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-10 20:36:32,426 INFO L286 TraceCheckSpWp]: Computing forward predicates...