/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.circular_pointer_top_w16_d8_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-26 08:57:25,765 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-26 08:57:25,803 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 08:57:25,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-26 08:57:25,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-26 08:57:25,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-26 08:57:25,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-26 08:57:25,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-26 08:57:25,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-26 08:57:25,822 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-26 08:57:25,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-26 08:57:25,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-26 08:57:25,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-26 08:57:25,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-26 08:57:25,823 INFO L153 SettingsManager]: * Use SBE=true [2023-12-26 08:57:25,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-26 08:57:25,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-26 08:57:25,824 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-26 08:57:25,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-26 08:57:25,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-26 08:57:25,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-26 08:57:25,825 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-26 08:57:25,825 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-26 08:57:25,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-26 08:57:25,826 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-26 08:57:25,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-26 08:57:25,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-26 08:57:25,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-26 08:57:25,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-26 08:57:25,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-26 08:57:25,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-26 08:57:25,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 08:57:25,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-26 08:57:25,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-26 08:57:25,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-26 08:57:25,827 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-26 08:57:25,828 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-26 08:57:25,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-26 08:57:25,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-26 08:57:25,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-26 08:57:25,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-26 08:57:25,997 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-26 08:57:25,998 INFO L274 PluginConnector]: CDTParser initialized [2023-12-26 08:57:25,998 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d8_e0.c [2023-12-26 08:57:27,016 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-26 08:57:27,204 INFO L384 CDTParser]: Found 1 translation units. [2023-12-26 08:57:27,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w16_d8_e0.c [2023-12-26 08:57:27,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228bbbaa1/de09f007f2b04bb8aa7d4d60bdd4f87b/FLAG4cfcb4e45 [2023-12-26 08:57:27,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/228bbbaa1/de09f007f2b04bb8aa7d4d60bdd4f87b [2023-12-26 08:57:27,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-26 08:57:27,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-26 08:57:27,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-26 08:57:27,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-26 08:57:27,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-26 08:57:27,273 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,274 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6ed326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27, skipping insertion in model container [2023-12-26 08:57:27,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,322 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-26 08:57:27,471 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.circular_pointer_top_w16_d8_e0.c[1279,1292] [2023-12-26 08:57:27,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 08:57:27,627 INFO L202 MainTranslator]: Completed pre-run [2023-12-26 08:57:27,635 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.circular_pointer_top_w16_d8_e0.c[1279,1292] [2023-12-26 08:57:27,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-26 08:57:27,723 INFO L206 MainTranslator]: Completed translation [2023-12-26 08:57:27,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27 WrapperNode [2023-12-26 08:57:27,723 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-26 08:57:27,724 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-26 08:57:27,724 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-26 08:57:27,724 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-26 08:57:27,730 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,790 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 641 [2023-12-26 08:57:27,791 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-26 08:57:27,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-26 08:57:27,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-26 08:57:27,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-26 08:57:27,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,870 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 08:57:27,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-26 08:57:27,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-26 08:57:27,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-26 08:57:27,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-26 08:57:27,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (1/1) ... [2023-12-26 08:57:27,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-26 08:57:27,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-26 08:57:27,951 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 08:57:27,984 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 08:57:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-26 08:57:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-26 08:57:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-26 08:57:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-26 08:57:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-26 08:57:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-26 08:57:28,173 INFO L241 CfgBuilder]: Building ICFG [2023-12-26 08:57:28,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-26 08:57:28,616 INFO L282 CfgBuilder]: Performing block encoding [2023-12-26 08:57:28,650 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-26 08:57:28,650 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-26 08:57:28,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 08:57:28 BoogieIcfgContainer [2023-12-26 08:57:28,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-26 08:57:28,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-26 08:57:28,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-26 08:57:28,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-26 08:57:28,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.12 08:57:27" (1/3) ... [2023-12-26 08:57:28,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d37d39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 08:57:28, skipping insertion in model container [2023-12-26 08:57:28,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.12 08:57:27" (2/3) ... [2023-12-26 08:57:28,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d37d39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.12 08:57:28, skipping insertion in model container [2023-12-26 08:57:28,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.12 08:57:28" (3/3) ... [2023-12-26 08:57:28,657 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w16_d8_e0.c [2023-12-26 08:57:28,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-26 08:57:28,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-26 08:57:28,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-26 08:57:28,718 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;@137a7b76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-26 08:57:28,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-26 08:57:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-26 08:57:28,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-26 08:57:28,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:57:28,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 08:57:28,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:57:28,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:57:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash -311484247, now seen corresponding path program 1 times [2023-12-26 08:57:28,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:57:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664384570] [2023-12-26 08:57:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:57:28,741 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 08:57:28,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:57:28,743 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 08:57:28,758 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 08:57:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:57:28,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-26 08:57:28,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:57:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-26 08:57:28,945 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 08:57:28,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:57:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664384570] [2023-12-26 08:57:28,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664384570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 08:57:28,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 08:57:28,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-26 08:57:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361947625] [2023-12-26 08:57:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 08:57:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-26 08:57:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:57:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-26 08:57:28,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-26 08:57:28,968 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-26 08:57:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:57:28,986 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2023-12-26 08:57:28,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-26 08:57:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2023-12-26 08:57:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:57:28,992 INFO L225 Difference]: With dead ends: 33 [2023-12-26 08:57:28,992 INFO L226 Difference]: Without dead ends: 16 [2023-12-26 08:57:28,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 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 08:57:28,996 INFO L413 NwaCegarLoop]: 17 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, 17 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 08:57:28,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-26 08:57:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-26 08:57:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-26 08:57:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-26 08:57:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-12-26 08:57:29,019 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 22 [2023-12-26 08:57:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:57:29,019 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-12-26 08:57:29,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-26 08:57:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2023-12-26 08:57:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-26 08:57:29,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:57:29,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-26 08:57:29,024 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 08:57:29,223 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 08:57:29,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:57:29,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:57:29,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1990205213, now seen corresponding path program 1 times [2023-12-26 08:57:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:57:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531617985] [2023-12-26 08:57:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:57:29,226 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 08:57:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:57:29,229 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 08:57:29,230 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 08:57:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:57:29,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-26 08:57:29,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:57:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-26 08:57:29,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-26 08:57:29,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:57:29,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531617985] [2023-12-26 08:57:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531617985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-26 08:57:29,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-26 08:57:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-26 08:57:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222488126] [2023-12-26 08:57:29,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-26 08:57:29,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-26 08:57:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:57:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-26 08:57:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-26 08:57:29,572 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-26 08:57:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:57:29,658 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2023-12-26 08:57:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-26 08:57:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-12-26 08:57:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:57:29,659 INFO L225 Difference]: With dead ends: 27 [2023-12-26 08:57:29,659 INFO L226 Difference]: Without dead ends: 25 [2023-12-26 08:57:29,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 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 08:57:29,660 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-26 08:57:29,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 33 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-26 08:57:29,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-26 08:57:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-12-26 08:57:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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 08:57:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-26 08:57:29,669 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 22 [2023-12-26 08:57:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:57:29,670 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-26 08:57:29,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-26 08:57:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-26 08:57:29,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-26 08:57:29,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:57:29,672 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-26 08:57:29,679 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 08:57:29,876 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 08:57:29,877 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:57:29,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:57:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1333456143, now seen corresponding path program 1 times [2023-12-26 08:57:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:57:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295277298] [2023-12-26 08:57:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:57:29,879 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 08:57:29,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:57:29,881 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 08:57:29,891 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 08:57:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:57:30,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 62 conjunts are in the unsatisfiable core [2023-12-26 08:57:30,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:57:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-26 08:57:31,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:57:31,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:57:31,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295277298] [2023-12-26 08:57:31,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295277298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:57:31,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10648511] [2023-12-26 08:57:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-26 08:57:31,750 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 08:57:31,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 08:57:31,785 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 08:57:31,815 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 08:57:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-26 08:57:32,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-26 08:57:32,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:57:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-26 08:57:32,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:57:32,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10648511] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:57:32,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 08:57:32,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-12-26 08:57:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289977786] [2023-12-26 08:57:32,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 08:57:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-26 08:57:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:57:32,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-26 08:57:32,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-12-26 08:57:32,641 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-26 08:57:33,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:57:33,043 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2023-12-26 08:57:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-26 08:57:33,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 43 [2023-12-26 08:57:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:57:33,044 INFO L225 Difference]: With dead ends: 36 [2023-12-26 08:57:33,044 INFO L226 Difference]: Without dead ends: 34 [2023-12-26 08:57:33,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-26 08:57:33,045 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 25 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-26 08:57:33,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 83 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-26 08:57:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-26 08:57:33,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-12-26 08:57:33,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-26 08:57:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2023-12-26 08:57:33,052 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 43 [2023-12-26 08:57:33,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:57:33,052 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2023-12-26 08:57:33,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-26 08:57:33,052 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2023-12-26 08:57:33,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-26 08:57:33,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:57:33,054 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2023-12-26 08:57:33,070 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 08:57:33,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-26 08:57:33,465 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 08:57:33,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:57:33,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:57:33,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1547916707, now seen corresponding path program 2 times [2023-12-26 08:57:33,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:57:33,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152378570] [2023-12-26 08:57:33,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 08:57:33,468 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 08:57:33,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:57:33,487 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 08:57:33,522 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 08:57:34,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 08:57:34,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:57:34,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 173 conjunts are in the unsatisfiable core [2023-12-26 08:57:34,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:57:38,152 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 64 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-26 08:57:38,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:57:38,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:57:38,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152378570] [2023-12-26 08:57:38,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152378570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:57:38,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1622541152] [2023-12-26 08:57:38,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-26 08:57:38,753 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-26 08:57:38,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-26 08:57:38,754 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 08:57:38,773 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 08:57:39,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-26 08:57:39,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:57:39,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 161 conjunts are in the unsatisfiable core [2023-12-26 08:57:39,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:57:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-26 08:57:42,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-26 08:57:43,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1622541152] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-26 08:57:43,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-26 08:57:43,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 21 [2023-12-26 08:57:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108953173] [2023-12-26 08:57:43,460 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-26 08:57:43,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-26 08:57:43,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-26 08:57:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-26 08:57:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-26 08:57:43,461 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 11 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-26 08:57:49,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-26 08:57:49,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-26 08:57:49,963 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2023-12-26 08:57:49,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-26 08:57:49,964 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 11 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) Word has length 64 [2023-12-26 08:57:49,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-26 08:57:49,964 INFO L225 Difference]: With dead ends: 45 [2023-12-26 08:57:49,965 INFO L226 Difference]: Without dead ends: 43 [2023-12-26 08:57:49,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2023-12-26 08:57:49,966 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-12-26 08:57:49,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 163 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 317 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-12-26 08:57:49,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-12-26 08:57:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-12-26 08:57:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 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 08:57:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2023-12-26 08:57:49,974 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 64 [2023-12-26 08:57:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-26 08:57:49,975 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2023-12-26 08:57:49,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 21 states have internal predecessors, (42), 11 states have call successors, (18), 1 states have call predecessors, (18), 2 states have return successors, (18), 8 states have call predecessors, (18), 11 states have call successors, (18) [2023-12-26 08:57:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2023-12-26 08:57:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-26 08:57:49,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-26 08:57:49,976 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1] [2023-12-26 08:57:49,989 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 08:57:50,193 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 08:57:50,396 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 08:57:50,397 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-26 08:57:50,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-26 08:57:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash 375264817, now seen corresponding path program 3 times [2023-12-26 08:57:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-26 08:57:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710360089] [2023-12-26 08:57:50,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-26 08:57:50,399 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 08:57:50,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-26 08:57:50,400 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 08:57:50,401 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 08:57:52,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-26 08:57:52,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-26 08:57:52,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 416 conjunts are in the unsatisfiable core [2023-12-26 08:57:52,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-26 08:59:32,163 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 08:59:32,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-26 08:59:32,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710360089] [2023-12-26 08:59:32,164 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-12-26 08:59:32,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2023-12-26 08:59:32,177 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 08:59:32,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 08:59:32,365 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.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:86) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$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) ... 45 more [2023-12-26 08:59:32,369 INFO L158 Benchmark]: Toolchain (without parser) took 125126.38ms. Allocated memory was 216.0MB in the beginning and 883.9MB in the end (delta: 667.9MB). Free memory was 168.9MB in the beginning and 763.5MB in the end (delta: -594.6MB). Peak memory consumption was 550.1MB. Max. memory is 8.0GB. [2023-12-26 08:59:32,369 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 216.0MB. Free memory was 165.8MB in the beginning and 165.6MB in the end (delta: 172.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-26 08:59:32,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 454.94ms. Allocated memory is still 216.0MB. Free memory was 168.6MB in the beginning and 141.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-12-26 08:59:32,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.74ms. Allocated memory is still 216.0MB. Free memory was 141.6MB in the beginning and 136.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-26 08:59:32,369 INFO L158 Benchmark]: Boogie Preprocessor took 132.04ms. Allocated memory was 216.0MB in the beginning and 262.1MB in the end (delta: 46.1MB). Free memory was 136.1MB in the beginning and 221.5MB in the end (delta: -85.4MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2023-12-26 08:59:32,370 INFO L158 Benchmark]: RCFGBuilder took 726.96ms. Allocated memory is still 262.1MB. Free memory was 221.5MB in the beginning and 155.4MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2023-12-26 08:59:32,370 INFO L158 Benchmark]: TraceAbstraction took 123716.04ms. Allocated memory was 262.1MB in the beginning and 883.9MB in the end (delta: 621.8MB). Free memory was 154.9MB in the beginning and 763.5MB in the end (delta: -608.6MB). Peak memory consumption was 489.4MB. Max. memory is 8.0GB. [2023-12-26 08:59:32,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 216.0MB. Free memory was 165.8MB in the beginning and 165.6MB in the end (delta: 172.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 454.94ms. Allocated memory is still 216.0MB. Free memory was 168.6MB in the beginning and 141.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 66.74ms. Allocated memory is still 216.0MB. Free memory was 141.6MB in the beginning and 136.4MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 132.04ms. Allocated memory was 216.0MB in the beginning and 262.1MB in the end (delta: 46.1MB). Free memory was 136.1MB in the beginning and 221.5MB in the end (delta: -85.4MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * RCFGBuilder took 726.96ms. Allocated memory is still 262.1MB. Free memory was 221.5MB in the beginning and 155.4MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * TraceAbstraction took 123716.04ms. Allocated memory was 262.1MB in the beginning and 883.9MB in the end (delta: 621.8MB). Free memory was 154.9MB in the beginning and 763.5MB in the end (delta: -608.6MB). Peak memory consumption was 489.4MB. 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...