/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:14:28,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:14:28,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:14:28,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:14:28,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:14:28,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:14:28,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:14:28,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:14:28,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:14:28,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:14:28,253 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:14:28,253 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:14:28,254 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:14:28,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:14:28,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:14:28,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:14:28,254 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:14:28,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:14:28,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:14:28,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:14:28,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:14:28,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:14:28,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:14:28,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:14:28,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:14:28,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:14:28,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:14:28,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:14:28,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:14:28,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:14:28,459 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:14:28,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i [2022-01-10 02:14:28,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b3b8c5e/1016b1abb9a243a79d223dc3b18f4eff/FLAG4e77cd95e [2022-01-10 02:14:28,825 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:14:28,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i [2022-01-10 02:14:28,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b3b8c5e/1016b1abb9a243a79d223dc3b18f4eff/FLAG4e77cd95e [2022-01-10 02:14:29,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9b3b8c5e/1016b1abb9a243a79d223dc3b18f4eff [2022-01-10 02:14:29,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:14:29,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:14:29,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:14:29,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:14:29,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:14:29,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c072780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29, skipping insertion in model container [2022-01-10 02:14:29,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:14:29,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:14:29,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i[1224,1237] [2022-01-10 02:14:29,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i[2827,2840] [2022-01-10 02:14:29,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:14:29,461 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:14:29,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i[1224,1237] [2022-01-10 02:14:29,491 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/gcd_4+newton_2_2.i[2827,2840] [2022-01-10 02:14:29,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:14:29,500 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:14:29,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29 WrapperNode [2022-01-10 02:14:29,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:14:29,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:14:29,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:14:29,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:14:29,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,541 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 72 [2022-01-10 02:14:29,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:14:29,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:14:29,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:14:29,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:14:29,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:14:29,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:14:29,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:14:29,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:14:29,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (1/1) ... [2022-01-10 02:14:29,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:14:29,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:14:29,597 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 02:14:29,618 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 02:14:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:14:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-01-10 02:14:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-01-10 02:14:29,628 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-01-10 02:14:29,628 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-01-10 02:14:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:14:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:14:29,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:14:29,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-10 02:14:29,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-10 02:14:29,680 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:14:29,681 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:14:29,837 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:14:29,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:14:29,841 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 02:14:29,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:14:29 BoogieIcfgContainer [2022-01-10 02:14:29,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:14:29,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:14:29,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:14:29,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:14:29,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:14:29" (1/3) ... [2022-01-10 02:14:29,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384ac3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:14:29, skipping insertion in model container [2022-01-10 02:14:29,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:14:29" (2/3) ... [2022-01-10 02:14:29,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5384ac3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:14:29, skipping insertion in model container [2022-01-10 02:14:29,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:14:29" (3/3) ... [2022-01-10 02:14:29,847 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_2_2.i [2022-01-10 02:14:29,850 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:14:29,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:14:29,882 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:14:29,886 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 02:14:29,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:14:29,896 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-10 02:14:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 02:14:29,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:14:29,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:14:29,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:14:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:14:29,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1780479560, now seen corresponding path program 1 times [2022-01-10 02:14:29,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:14:29,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292517624] [2022-01-10 02:14:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:29,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:14:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:14:30,073 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 02:14:30,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:14:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292517624] [2022-01-10 02:14:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292517624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:14:30,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:14:30,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:14:30,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205091590] [2022-01-10 02:14:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:14:30,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:14:30,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:14:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:14:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:14:30,102 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 32 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:14:30,153 INFO L93 Difference]: Finished difference Result 93 states and 127 transitions. [2022-01-10 02:14:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:14:30,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 02:14:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:14:30,163 INFO L225 Difference]: With dead ends: 93 [2022-01-10 02:14:30,164 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 02:14:30,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:14:30,172 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 13 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:14:30,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:14:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 02:14:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2022-01-10 02:14:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 02:14:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-01-10 02:14:30,207 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 11 [2022-01-10 02:14:30,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:14:30,207 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-01-10 02:14:30,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-01-10 02:14:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 02:14:30,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:14:30,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:14:30,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:14:30,210 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:14:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:14:30,212 INFO L85 PathProgramCache]: Analyzing trace with hash 413626440, now seen corresponding path program 1 times [2022-01-10 02:14:30,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:14:30,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240163073] [2022-01-10 02:14:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:30,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:14:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:14:30,253 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 02:14:30,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:14:30,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240163073] [2022-01-10 02:14:30,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240163073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:14:30,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:14:30,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:14:30,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118097363] [2022-01-10 02:14:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:14:30,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:14:30,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:14:30,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:14:30,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:14:30,259 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:14:30,276 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2022-01-10 02:14:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:14:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 02:14:30,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:14:30,279 INFO L225 Difference]: With dead ends: 52 [2022-01-10 02:14:30,279 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 02:14:30,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:14:30,283 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:14:30,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 70 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:14:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 02:14:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-10 02:14:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 02:14:30,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-01-10 02:14:30,294 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 13 [2022-01-10 02:14:30,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:14:30,294 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-01-10 02:14:30,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-01-10 02:14:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 02:14:30,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:14:30,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:14:30,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:14:30,296 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:14:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:14:30,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1715037691, now seen corresponding path program 1 times [2022-01-10 02:14:30,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:14:30,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502289802] [2022-01-10 02:14:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:30,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:14:30,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 02:14:30,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952165996] [2022-01-10 02:14:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:30,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:14:30,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:14:30,331 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 02:14:30,363 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 02:14:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:14:30,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 02:14:30,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:14:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:14:30,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:14:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:14:30,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:14:30,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502289802] [2022-01-10 02:14:30,515 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 02:14:30,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952165996] [2022-01-10 02:14:30,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952165996] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:14:30,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:14:30,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 02:14:30,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271234872] [2022-01-10 02:14:30,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:14:30,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:14:30,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:14:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:14:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:14:30,518 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:30,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:14:30,548 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2022-01-10 02:14:30,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 02:14:30,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 02:14:30,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:14:30,548 INFO L225 Difference]: With dead ends: 55 [2022-01-10 02:14:30,548 INFO L226 Difference]: Without dead ends: 42 [2022-01-10 02:14:30,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:14:30,549 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:14:30,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:14:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-10 02:14:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-01-10 02:14:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 02:14:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-01-10 02:14:30,554 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 15 [2022-01-10 02:14:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:14:30,554 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-01-10 02:14:30,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-01-10 02:14:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 02:14:30,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:14:30,555 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:14:30,573 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 02:14:30,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:14:30,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:14:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:14:30,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1992731711, now seen corresponding path program 1 times [2022-01-10 02:14:30,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:14:30,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844518398] [2022-01-10 02:14:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:30,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:14:30,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 02:14:30,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094812742] [2022-01-10 02:14:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:30,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:14:30,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:14:30,796 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 02:14:30,797 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 02:14:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:14:30,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 02:14:30,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:14:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:14:30,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:14:31,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:14:31,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:14:31,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844518398] [2022-01-10 02:14:31,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 02:14:31,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094812742] [2022-01-10 02:14:31,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094812742] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:14:31,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:14:31,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-01-10 02:14:31,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755186234] [2022-01-10 02:14:31,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:14:31,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:14:31,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:14:31,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:14:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:14:31,054 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:14:31,118 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2022-01-10 02:14:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:14:31,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 02:14:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:14:31,127 INFO L225 Difference]: With dead ends: 57 [2022-01-10 02:14:31,127 INFO L226 Difference]: Without dead ends: 44 [2022-01-10 02:14:31,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:14:31,128 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 9 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:14:31,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 198 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:14:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-01-10 02:14:31,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-01-10 02:14:31,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.15625) internal successors, (37), 34 states have internal predecessors, (37), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 02:14:31,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2022-01-10 02:14:31,135 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 19 [2022-01-10 02:14:31,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:14:31,135 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2022-01-10 02:14:31,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2022-01-10 02:14:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-10 02:14:31,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:14:31,136 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:14:31,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 02:14:31,342 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,SelfDestructingSolverStorable3 [2022-01-10 02:14:31,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:14:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:14:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash -626365316, now seen corresponding path program 2 times [2022-01-10 02:14:31,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:14:31,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436767877] [2022-01-10 02:14:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:31,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:14:31,350 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 02:14:31,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836916892] [2022-01-10 02:14:31,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 02:14:31,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:14:31,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:14:31,352 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 02:14:31,353 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 02:14:31,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 02:14:31,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 02:14:31,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 02:14:31,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:14:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:14:31,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:14:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:14:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:14:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436767877] [2022-01-10 02:14:31,602 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 02:14:31,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836916892] [2022-01-10 02:14:31,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836916892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:14:31,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 02:14:31,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 02:14:31,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065809785] [2022-01-10 02:14:31,603 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 02:14:31,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 02:14:31,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:14:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 02:14:31,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:14:31,605 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:31,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:14:31,684 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2022-01-10 02:14:31,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:14:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-10 02:14:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:14:31,687 INFO L225 Difference]: With dead ends: 65 [2022-01-10 02:14:31,687 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 02:14:31,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:14:31,689 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:14:31,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 261 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:14:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 02:14:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-01-10 02:14:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 40 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-01-10 02:14:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-01-10 02:14:31,700 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 21 [2022-01-10 02:14:31,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:14:31,700 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-01-10 02:14:31,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:14:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-01-10 02:14:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 02:14:31,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:14:31,702 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:14:31,720 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 02:14:31,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:14:31,916 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:14:31,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:14:31,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2101905688, now seen corresponding path program 1 times [2022-01-10 02:14:31,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:14:31,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971812502] [2022-01-10 02:14:31,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:14:31,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:14:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 02:14:31,926 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 02:14:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 02:14:31,949 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 02:14:31,950 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 02:14:31,952 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 02:14:31,954 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 02:14:31,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:14:31,956 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-01-10 02:14:31,958 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 02:14:31,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:14:31 BoogieIcfgContainer [2022-01-10 02:14:31,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 02:14:31,975 INFO L158 Benchmark]: Toolchain (without parser) took 2720.39ms. Allocated memory was 190.8MB in the beginning and 257.9MB in the end (delta: 67.1MB). Free memory was 142.1MB in the beginning and 217.0MB in the end (delta: -74.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 02:14:31,975 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 158.0MB in the beginning and 157.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 02:14:31,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.88ms. Allocated memory is still 190.8MB. Free memory was 141.8MB in the beginning and 167.6MB in the end (delta: -25.9MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-01-10 02:14:31,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.71ms. Allocated memory is still 190.8MB. Free memory was 167.6MB in the beginning and 166.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 02:14:31,977 INFO L158 Benchmark]: Boogie Preprocessor took 30.00ms. Allocated memory is still 190.8MB. Free memory was 165.5MB in the beginning and 164.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 02:14:31,977 INFO L158 Benchmark]: RCFGBuilder took 269.36ms. Allocated memory is still 190.8MB. Free memory was 164.5MB in the beginning and 153.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 02:14:31,977 INFO L158 Benchmark]: TraceAbstraction took 2130.86ms. Allocated memory was 190.8MB in the beginning and 257.9MB in the end (delta: 67.1MB). Free memory was 153.0MB in the beginning and 217.0MB in the end (delta: -64.1MB). Peak memory consumption was 4.6MB. Max. memory is 8.0GB. [2022-01-10 02:14:31,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory was 158.0MB in the beginning and 157.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 242.88ms. Allocated memory is still 190.8MB. Free memory was 141.8MB in the beginning and 167.6MB in the end (delta: -25.9MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.71ms. Allocated memory is still 190.8MB. Free memory was 167.6MB in the beginning and 166.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.00ms. Allocated memory is still 190.8MB. Free memory was 165.5MB in the beginning and 164.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 269.36ms. Allocated memory is still 190.8MB. Free memory was 164.5MB in the beginning and 153.0MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2130.86ms. Allocated memory was 190.8MB in the beginning and 257.9MB in the end (delta: 67.1MB). Free memory was 153.0MB in the beginning and 217.0MB in the end (delta: -64.1MB). Peak memory consumption was 4.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 102. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L82] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L98] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L100] CALL, EXPR f(IN) VAL [\old(x)=53] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=53, x=53] [L100] RET, EXPR f(IN) VAL [f(IN)=50, IN=53] [L100] CALL, EXPR fp(IN) VAL [\old(x)=53] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=53, x=53] [L100] RET, EXPR fp(IN) VAL [f(IN)=50, fp(IN)=49, IN=53] [L100] float x = IN - f(IN)/fp(IN); [L102] CALL, EXPR f(x) VAL [\old(x)=51] [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=51, x=51] [L102] RET, EXPR f(x) VAL [f(x)=54, IN=53, x=51] [L102] CALL, EXPR fp(x) VAL [\old(x)=51] [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L102] RET, EXPR fp(x) VAL [f(x)=54, fp(x)=52, IN=53, x=51] [L102] x = x - f(x)/fp(x) [L108] COND TRUE !(x < 0.1) VAL [IN=53] [L109] reach_error() VAL [IN=53] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 755 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 561 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 194 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 435 SizeOfPredicates, 17 NumberOfNonLiveVariables, 212 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-01-10 02:14:32,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...