/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 15:46:29,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 15:46:29,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-26 15:46:29,513 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 15:46:29,513 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 15:46:29,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 15:46:29,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 15:46:29,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 15:46:29,546 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 15:46:29,552 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 15:46:29,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 15:46:29,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 15:46:29,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 15:46:29,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 15:46:29,555 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 15:46:29,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 15:46:29,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 15:46:29,556 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 15:46:29,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 15:46:29,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 15:46:29,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 15:46:29,558 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 15:46:29,558 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 15:46:29,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 15:46:29,558 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 15:46:29,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 15:46:29,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 15:46:29,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 15:46:29,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 15:46:29,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 15:46:29,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 15:46:29,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 15:46:29,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 15:46:29,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 15:46:29,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 15:46:29,561 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 15:46:29,561 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 15:46:29,562 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 15:46:29,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 15:46:29,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 15:46:29,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 15:46:29,810 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 15:46:29,810 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 15:46:29,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-12-26 15:46:31,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 15:46:31,218 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 15:46:31,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-12-26 15:46:31,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f45eb5bf/0986de5966f34db0bd55860ac9522551/FLAG906216cba [2023-12-26 15:46:31,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f45eb5bf/0986de5966f34db0bd55860ac9522551 [2023-12-26 15:46:31,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 15:46:31,243 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 15:46:31,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 15:46:31,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 15:46:31,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 15:46:31,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4865c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31, skipping insertion in model container [2023-12-26 15:46:31,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,283 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 15:46:31,461 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-12-26 15:46:31,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 15:46:31,613 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 15:46:31,622 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.safe_analog_estimation_convergence.c[1287,1300] [2023-12-26 15:46:31,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 15:46:31,706 INFO L206 MainTranslator]: Completed translation [2023-12-26 15:46:31,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31 WrapperNode [2023-12-26 15:46:31,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 15:46:31,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 15:46:31,708 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 15:46:31,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 15:46:31,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,763 INFO L138 Inliner]: procedures = 17, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 429 [2023-12-26 15:46:31,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 15:46:31,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 15:46:31,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 15:46:31,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 15:46:31,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,810 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-26 15:46:31,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,858 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 15:46:31,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 15:46:31,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 15:46:31,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 15:46:31,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (1/1) ... [2023-12-26 15:46:31,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 15:46:31,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 15:46:31,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-26 15:46:31,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-26 15:46:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 15:46:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 15:46:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 15:46:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 15:46:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 15:46:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 15:46:32,083 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 15:46:32,085 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 15:46:32,535 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 15:46:32,578 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 15:46:32,579 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 15:46:32,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:46:32 BoogieIcfgContainer [2023-12-26 15:46:32,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 15:46:32,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 15:46:32,582 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 15:46:32,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 15:46:32,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 03:46:31" (1/3) ... [2023-12-26 15:46:32,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a72ac9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:46:32, skipping insertion in model container [2023-12-26 15:46:32,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 03:46:31" (2/3) ... [2023-12-26 15:46:32,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a72ac9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 03:46:32, skipping insertion in model container [2023-12-26 15:46:32,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 03:46:32" (3/3) ... [2023-12-26 15:46:32,587 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_analog_estimation_convergence.c [2023-12-26 15:46:32,602 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 15:46:32,603 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 15:46:32,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 15:46:32,657 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@697909f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 15:46:32,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 15:46:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-26 15:46:32,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-26 15:46:32,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:32,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 15:46:32,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:32,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:32,676 INFO L85 PathProgramCache]: Analyzing trace with hash 722107577, now seen corresponding path program 1 times [2023-12-26 15:46:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943763116] [2023-12-26 15:46:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:46:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:32,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:32,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-26 15:46:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:46:32,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-26 15:46:32,938 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-26 15:46:32,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 15:46:32,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:32,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943763116] [2023-12-26 15:46:32,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943763116] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 15:46:32,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 15:46:32,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-26 15:46:32,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432395501] [2023-12-26 15:46:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 15:46:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-26 15:46:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-26 15:46:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 15:46:32,987 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-26 15:46:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:33,012 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2023-12-26 15:46:33,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-26 15:46:33,018 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-26 15:46:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:33,023 INFO L225 Difference]: With dead ends: 29 [2023-12-26 15:46:33,023 INFO L226 Difference]: Without dead ends: 14 [2023-12-26 15:46:33,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 15:46:33,031 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:33,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 15:46:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-26 15:46:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-26 15:46:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-26 15:46:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-12-26 15:46:33,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 16 [2023-12-26 15:46:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:33,062 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-12-26 15:46:33,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-26 15:46:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-12-26 15:46:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-26 15:46:33,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:33,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 15:46:33,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-26 15:46:33,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:33,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:33,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1037531317, now seen corresponding path program 1 times [2023-12-26 15:46:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967833427] [2023-12-26 15:46:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:46:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:33,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:33,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-26 15:46:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:46:33,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-26 15:46:33,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-26 15:46:33,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 15:46:33,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:33,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967833427] [2023-12-26 15:46:33,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967833427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 15:46:33,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 15:46:33,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 15:46:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503196381] [2023-12-26 15:46:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 15:46:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 15:46:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 15:46:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 15:46:33,715 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-26 15:46:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:33,890 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-12-26 15:46:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 15:46:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-26 15:46:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:33,892 INFO L225 Difference]: With dead ends: 23 [2023-12-26 15:46:33,892 INFO L226 Difference]: Without dead ends: 21 [2023-12-26 15:46:33,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-26 15:46:33,894 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:33,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 27 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-26 15:46:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-26 15:46:33,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-12-26 15:46:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-26 15:46:33,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-12-26 15:46:33,899 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 16 [2023-12-26 15:46:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:33,902 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-12-26 15:46:33,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-26 15:46:33,902 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-12-26 15:46:33,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-26 15:46:33,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:33,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-26 15:46:33,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:34,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:34,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:34,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:34,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1248997715, now seen corresponding path program 1 times [2023-12-26 15:46:34,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:34,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890027466] [2023-12-26 15:46:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:46:34,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:34,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:34,112 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:34,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-26 15:46:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:46:34,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-26 15:46:34,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-26 15:46:34,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:35,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:35,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890027466] [2023-12-26 15:46:35,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890027466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:35,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [783219225] [2023-12-26 15:46:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 15:46:35,119 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:35,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 15:46:35,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 15:46:35,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-26 15:46:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:46:35,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-26 15:46:35,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-26 15:46:35,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:35,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [783219225] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:35,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:46:35,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-12-26 15:46:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438096003] [2023-12-26 15:46:35,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:46:35,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-26 15:46:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-26 15:46:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-26 15:46:35,975 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-26 15:46:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:36,353 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-12-26 15:46:36,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-26 15:46:36,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-12-26 15:46:36,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:36,355 INFO L225 Difference]: With dead ends: 30 [2023-12-26 15:46:36,355 INFO L226 Difference]: Without dead ends: 28 [2023-12-26 15:46:36,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-12-26 15:46:36,356 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:36,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-26 15:46:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-26 15:46:36,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-12-26 15:46:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-26 15:46:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-12-26 15:46:36,363 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 31 [2023-12-26 15:46:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:36,363 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-12-26 15:46:36,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-26 15:46:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-12-26 15:46:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-26 15:46:36,366 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:36,367 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-26 15:46:36,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:36,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-26 15:46:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:36,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:36,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash 252823989, now seen corresponding path program 2 times [2023-12-26 15:46:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:36,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130153572] [2023-12-26 15:46:36,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 15:46:36,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:36,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:36,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:36,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-26 15:46:37,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 15:46:37,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:37,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-26 15:46:37,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-26 15:46:37,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:37,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130153572] [2023-12-26 15:46:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130153572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31335203] [2023-12-26 15:46:37,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 15:46:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 15:46:37,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 15:46:38,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-26 15:46:38,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 15:46:38,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:38,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-26 15:46:38,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-26 15:46:38,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [31335203] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:39,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:46:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-26 15:46:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163171569] [2023-12-26 15:46:39,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:46:39,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-26 15:46:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:39,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-26 15:46:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-26 15:46:39,013 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-26 15:46:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:39,402 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2023-12-26 15:46:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-26 15:46:39,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2023-12-26 15:46:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:39,404 INFO L225 Difference]: With dead ends: 37 [2023-12-26 15:46:39,404 INFO L226 Difference]: Without dead ends: 35 [2023-12-26 15:46:39,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-26 15:46:39,405 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:39,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-26 15:46:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-26 15:46:39,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2023-12-26 15:46:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-26 15:46:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2023-12-26 15:46:39,416 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 46 [2023-12-26 15:46:39,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:39,416 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2023-12-26 15:46:39,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-26 15:46:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2023-12-26 15:46:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-26 15:46:39,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:39,419 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-12-26 15:46:39,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-26 15:46:39,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:39,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:39,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:39,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 809983405, now seen corresponding path program 3 times [2023-12-26 15:46:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:39,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398465156] [2023-12-26 15:46:39,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 15:46:39,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:39,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:39,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:39,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-26 15:46:41,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-26 15:46:41,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:41,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-26 15:46:41,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-26 15:46:42,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:42,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:42,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398465156] [2023-12-26 15:46:42,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398465156] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:42,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175151922] [2023-12-26 15:46:42,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 15:46:42,228 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 15:46:42,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 15:46:42,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-26 15:46:43,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-26 15:46:43,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:43,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-26 15:46:43,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-12-26 15:46:43,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175151922] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:43,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:46:43,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-12-26 15:46:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930303964] [2023-12-26 15:46:43,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:46:43,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-26 15:46:43,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-26 15:46:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-26 15:46:43,696 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-26 15:46:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:44,172 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-12-26 15:46:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-26 15:46:44,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2023-12-26 15:46:44,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:44,175 INFO L225 Difference]: With dead ends: 44 [2023-12-26 15:46:44,175 INFO L226 Difference]: Without dead ends: 42 [2023-12-26 15:46:44,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-26 15:46:44,176 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:44,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-26 15:46:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-26 15:46:44,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-12-26 15:46:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-26 15:46:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2023-12-26 15:46:44,187 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 61 [2023-12-26 15:46:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:44,187 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2023-12-26 15:46:44,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-26 15:46:44,187 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2023-12-26 15:46:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-26 15:46:44,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:44,189 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2023-12-26 15:46:44,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:44,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:44,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:44,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:44,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash 640178869, now seen corresponding path program 4 times [2023-12-26 15:46:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774175571] [2023-12-26 15:46:44,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-26 15:46:44,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:44,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:44,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:44,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-26 15:46:47,095 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-26 15:46:47,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:47,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-26 15:46:47,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-26 15:46:47,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:47,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774175571] [2023-12-26 15:46:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774175571] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:47,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1601913591] [2023-12-26 15:46:47,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-26 15:46:47,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:47,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 15:46:47,760 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 15:46:47,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-26 15:46:48,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-26 15:46:48,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:48,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-26 15:46:48,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-26 15:46:49,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:49,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1601913591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:49,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:46:49,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-12-26 15:46:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317573484] [2023-12-26 15:46:49,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:46:49,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-26 15:46:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:49,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-26 15:46:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-26 15:46:49,278 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-26 15:46:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:49,903 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2023-12-26 15:46:49,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-26 15:46:49,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 76 [2023-12-26 15:46:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:49,905 INFO L225 Difference]: With dead ends: 51 [2023-12-26 15:46:49,905 INFO L226 Difference]: Without dead ends: 49 [2023-12-26 15:46:49,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-26 15:46:49,906 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:49,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-26 15:46:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-26 15:46:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2023-12-26 15:46:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-26 15:46:49,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2023-12-26 15:46:49,915 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 76 [2023-12-26 15:46:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:49,915 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2023-12-26 15:46:49,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 5 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-26 15:46:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2023-12-26 15:46:49,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-26 15:46:49,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:49,917 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1] [2023-12-26 15:46:49,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:50,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-26 15:46:50,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:50,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:50,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -383996755, now seen corresponding path program 5 times [2023-12-26 15:46:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382783077] [2023-12-26 15:46:50,332 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-26 15:46:50,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:50,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:50,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:50,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-26 15:46:52,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-26 15:46:52,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:52,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-26 15:46:52,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-26 15:46:53,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:53,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:46:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382783077] [2023-12-26 15:46:53,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382783077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [301200772] [2023-12-26 15:46:53,127 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-26 15:46:53,127 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 15:46:53,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 15:46:53,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 15:46:53,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-26 15:46:54,824 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-12-26 15:46:54,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:46:54,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1675 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-26 15:46:54,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:46:55,506 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-26 15:46:55,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:46:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [301200772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:46:55,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:46:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2023-12-26 15:46:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320192444] [2023-12-26 15:46:55,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:46:55,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-26 15:46:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:46:55,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-26 15:46:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-26 15:46:55,595 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-26 15:46:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:46:56,413 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2023-12-26 15:46:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-26 15:46:56,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 91 [2023-12-26 15:46:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:46:56,415 INFO L225 Difference]: With dead ends: 58 [2023-12-26 15:46:56,415 INFO L226 Difference]: Without dead ends: 56 [2023-12-26 15:46:56,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-12-26 15:46:56,416 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-26 15:46:56,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 159 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-26 15:46:56,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-26 15:46:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2023-12-26 15:46:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-26 15:46:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2023-12-26 15:46:56,426 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 91 [2023-12-26 15:46:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:46:56,426 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2023-12-26 15:46:56,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-26 15:46:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2023-12-26 15:46:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-26 15:46:56,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:46:56,428 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1] [2023-12-26 15:46:56,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:56,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-26 15:46:56,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:56,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:46:56,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:46:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 204155829, now seen corresponding path program 6 times [2023-12-26 15:46:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:46:56,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858696994] [2023-12-26 15:46:56,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-26 15:46:56,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:46:56,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:46:56,839 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:46:56,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-26 15:47:03,591 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-26 15:47:03,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:47:03,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 349 conjunts are in the unsatisfiable core [2023-12-26 15:47:03,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:47:19,011 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 21 proven. 192 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-26 15:47:19,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:47:19,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:47:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858696994] [2023-12-26 15:47:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858696994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:47:19,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1991643541] [2023-12-26 15:47:19,460 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-26 15:47:19,460 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 15:47:19,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 15:47:19,462 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-26 15:47:19,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-26 15:47:21,394 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-12-26 15:47:21,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 15:47:21,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1937 conjuncts, 468 conjunts are in the unsatisfiable core [2023-12-26 15:47:21,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:47:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 66 proven. 195 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-26 15:47:42,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 15:47:43,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1991643541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 15:47:43,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 15:47:43,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28] total 39 [2023-12-26 15:47:43,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275122040] [2023-12-26 15:47:43,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 15:47:43,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-26 15:47:43,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 15:47:43,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-26 15:47:43,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640 [2023-12-26 15:47:43,082 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 39 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 35 states have internal predecessors, (64), 16 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2023-12-26 15:48:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 15:48:13,539 INFO L93 Difference]: Finished difference Result 79 states and 100 transitions. [2023-12-26 15:48:13,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-26 15:48:13,540 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 35 states have internal predecessors, (64), 16 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) Word has length 106 [2023-12-26 15:48:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 15:48:13,541 INFO L225 Difference]: With dead ends: 79 [2023-12-26 15:48:13,541 INFO L226 Difference]: Without dead ends: 77 [2023-12-26 15:48:13,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=622, Invalid=3668, Unknown=0, NotChecked=0, Total=4290 [2023-12-26 15:48:13,543 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-12-26 15:48:13,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 122 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2023-12-26 15:48:13,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-26 15:48:13,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2023-12-26 15:48:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.0185185185185186) internal successors, (55), 54 states have internal predecessors, (55), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-26 15:48:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2023-12-26 15:48:13,586 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 106 [2023-12-26 15:48:13,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 15:48:13,587 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2023-12-26 15:48:13,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 35 states have internal predecessors, (64), 16 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2023-12-26 15:48:13,587 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2023-12-26 15:48:13,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-26 15:48:13,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 15:48:13,589 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1] [2023-12-26 15:48:13,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-26 15:48:13,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-26 15:48:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:48:14,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 15:48:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 15:48:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1529181523, now seen corresponding path program 7 times [2023-12-26 15:48:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 15:48:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354619234] [2023-12-26 15:48:14,002 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-26 15:48:14,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:48:14,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 15:48:14,003 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-26 15:48:14,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-26 15:48:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 15:48:34,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 786 conjunts are in the unsatisfiable core [2023-12-26 15:48:34,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 15:49:35,243 WARN L293 SmtUtils]: Spent 11.05s on a formula simplification. DAG size of input: 787 DAG size of output: 789 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 15:49:57,502 WARN L293 SmtUtils]: Spent 13.08s on a formula simplification. DAG size of input: 794 DAG size of output: 795 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 15:50:27,928 WARN L293 SmtUtils]: Spent 18.18s on a formula simplification. DAG size of input: 808 DAG size of output: 809 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 15:50:55,278 WARN L293 SmtUtils]: Spent 15.55s on a formula simplification that was a NOOP. DAG size: 809 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-26 15:57:00,578 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-12-26 15:57:00,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 15:57:00,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354619234] [2023-12-26 15:57:00,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-12-26 15:57:00,580 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-26 15:57:00,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-12-26 15:57:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-26 15:57:00,781 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:950) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:579) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2023-12-26 15:57:00,785 INFO L158 Benchmark]: Toolchain (without parser) took 629541.58ms. Allocated memory was 204.5MB in the beginning and 789.6MB in the end (delta: 585.1MB). Free memory was 155.3MB in the beginning and 396.6MB in the end (delta: -241.3MB). Peak memory consumption was 344.9MB. Max. memory is 8.0GB. [2023-12-26 15:57:00,785 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 15:57:00,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.13ms. Allocated memory is still 204.5MB. Free memory was 155.0MB in the beginning and 131.3MB in the end (delta: 23.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-26 15:57:00,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.79ms. Allocated memory is still 204.5MB. Free memory was 131.1MB in the beginning and 127.0MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-26 15:57:00,785 INFO L158 Benchmark]: Boogie Preprocessor took 94.05ms. Allocated memory is still 204.5MB. Free memory was 127.0MB in the beginning and 122.3MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-26 15:57:00,786 INFO L158 Benchmark]: RCFGBuilder took 720.48ms. Allocated memory was 204.5MB in the beginning and 315.6MB in the end (delta: 111.1MB). Free memory was 122.3MB in the beginning and 248.1MB in the end (delta: -125.8MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2023-12-26 15:57:00,786 INFO L158 Benchmark]: TraceAbstraction took 628202.72ms. Allocated memory was 315.6MB in the beginning and 789.6MB in the end (delta: 474.0MB). Free memory was 247.0MB in the beginning and 396.6MB in the end (delta: -149.6MB). Peak memory consumption was 324.6MB. Max. memory is 8.0GB. [2023-12-26 15:57:00,787 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 204.5MB. Free memory is still 158.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 463.13ms. Allocated memory is still 204.5MB. Free memory was 155.0MB in the beginning and 131.3MB in the end (delta: 23.7MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.79ms. Allocated memory is still 204.5MB. Free memory was 131.1MB in the beginning and 127.0MB in the end (delta: 4.0MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 94.05ms. Allocated memory is still 204.5MB. Free memory was 127.0MB in the beginning and 122.3MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 720.48ms. Allocated memory was 204.5MB in the beginning and 315.6MB in the end (delta: 111.1MB). Free memory was 122.3MB in the beginning and 248.1MB in the end (delta: -125.8MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. * TraceAbstraction took 628202.72ms. Allocated memory was 315.6MB in the beginning and 789.6MB in the end (delta: 474.0MB). Free memory was 247.0MB in the beginning and 396.6MB in the end (delta: -149.6MB). Peak memory consumption was 324.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...