/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-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-crafted/zero_sum2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 07:03:04,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 07:03:04,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 07:03:04,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 07:03:04,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 07:03:04,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 07:03:04,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 07:03:04,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 07:03:04,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 07:03:04,935 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 07:03:04,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 07:03:04,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 07:03:04,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 07:03:04,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 07:03:04,937 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 07:03:04,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 07:03:04,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 07:03:04,938 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 07:03:04,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 07:03:04,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 07:03:04,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 07:03:04,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 07:03:04,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 07:03:04,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 07:03:04,940 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 07:03:04,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 07:03:04,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 07:03:04,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 07:03:04,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:03:04,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 07:03:04,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 07:03:04,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 07:03:04,941 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 07:03:04,942 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 07:03:04,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 07:03:05,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 07:03:05,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 07:03:05,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 07:03:05,145 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 07:03:05,146 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 07:03:05,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum2.c [2023-12-16 07:03:06,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 07:03:06,572 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 07:03:06,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum2.c [2023-12-16 07:03:06,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22707cefb/84d647f3b73c40179c13030284b9bbad/FLAG250daac29 [2023-12-16 07:03:06,588 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22707cefb/84d647f3b73c40179c13030284b9bbad [2023-12-16 07:03:06,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 07:03:06,590 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 07:03:06,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 07:03:06,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 07:03:06,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 07:03:06,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5674f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06, skipping insertion in model container [2023-12-16 07:03:06,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 07:03:06,730 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum2.c[400,413] [2023-12-16 07:03:06,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:03:06,754 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 07:03:06,776 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum2.c[400,413] [2023-12-16 07:03:06,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 07:03:06,791 INFO L206 MainTranslator]: Completed translation [2023-12-16 07:03:06,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06 WrapperNode [2023-12-16 07:03:06,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 07:03:06,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 07:03:06,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 07:03:06,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 07:03:06,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,821 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-12-16 07:03:06,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 07:03:06,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 07:03:06,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 07:03:06,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 07:03:06,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,841 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-16 07:03:06,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 07:03:06,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 07:03:06,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 07:03:06,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 07:03:06,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (1/1) ... [2023-12-16 07:03:06,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 07:03:06,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 07:03:06,874 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) [2023-12-16 07:03:06,878 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 [2023-12-16 07:03:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 07:03:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 07:03:06,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 07:03:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-16 07:03:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-16 07:03:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-16 07:03:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 07:03:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 07:03:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-16 07:03:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-16 07:03:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 07:03:06,988 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 07:03:06,989 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 07:03:07,150 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 07:03:07,183 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 07:03:07,183 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-16 07:03:07,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:03:07 BoogieIcfgContainer [2023-12-16 07:03:07,183 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 07:03:07,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 07:03:07,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 07:03:07,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 07:03:07,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:03:06" (1/3) ... [2023-12-16 07:03:07,187 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c73b1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:03:07, skipping insertion in model container [2023-12-16 07:03:07,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:03:06" (2/3) ... [2023-12-16 07:03:07,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c73b1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:03:07, skipping insertion in model container [2023-12-16 07:03:07,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:03:07" (3/3) ... [2023-12-16 07:03:07,189 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum2.c [2023-12-16 07:03:07,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 07:03:07,204 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 07:03:07,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 07:03:07,243 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;@559365e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 07:03:07,243 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 07:03:07,246 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 07:03:07,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:07,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:07,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:07,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:07,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1123727691, now seen corresponding path program 1 times [2023-12-16 07:03:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:07,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186048429] [2023-12-16 07:03:07,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:03:07,263 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 [2023-12-16 07:03:07,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:07,267 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) [2023-12-16 07:03:07,275 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 [2023-12-16 07:03:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:03:07,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 07:03:07,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:03:07,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:03:07,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:07,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186048429] [2023-12-16 07:03:07,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186048429] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:03:07,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:03:07,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 07:03:07,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372819823] [2023-12-16 07:03:07,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:03:07,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 07:03:07,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:07,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 07:03:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:03:07,456 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.8125) internal successors, (29), 17 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:07,515 INFO L93 Difference]: Finished difference Result 33 states and 52 transitions. [2023-12-16 07:03:07,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 07:03:07,517 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 07:03:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:07,521 INFO L225 Difference]: With dead ends: 33 [2023-12-16 07:03:07,521 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 07:03:07,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 07:03:07,527 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:07,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:03:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 07:03:07,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-16 07:03:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-12-16 07:03:07,549 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 14 [2023-12-16 07:03:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:07,549 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-12-16 07:03:07,550 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-12-16 07:03:07,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 07:03:07,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:07,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:07,556 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 (2)] Forceful destruction successful, exit code 0 [2023-12-16 07:03:07,753 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 [2023-12-16 07:03:07,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:07,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:07,754 INFO L85 PathProgramCache]: Analyzing trace with hash 349231377, now seen corresponding path program 1 times [2023-12-16 07:03:07,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:07,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422575424] [2023-12-16 07:03:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:03:07,755 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 [2023-12-16 07:03:07,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:07,758 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) [2023-12-16 07:03:07,810 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 [2023-12-16 07:03:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:03:07,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:03:07,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:03:07,895 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:03:07,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:07,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422575424] [2023-12-16 07:03:07,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422575424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:03:07,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:03:07,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:03:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264007118] [2023-12-16 07:03:07,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:03:07,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:03:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:03:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:03:07,898 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:08,043 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2023-12-16 07:03:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:03:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 07:03:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:08,044 INFO L225 Difference]: With dead ends: 26 [2023-12-16 07:03:08,044 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 07:03:08,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 07:03:08,045 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:08,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:03:08,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 07:03:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 07:03:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2023-12-16 07:03:08,049 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 14 [2023-12-16 07:03:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:08,050 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-12-16 07:03:08,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-12-16 07:03:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 07:03:08,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:08,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:08,054 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 [2023-12-16 07:03:08,252 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 [2023-12-16 07:03:08,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:08,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash -31902301, now seen corresponding path program 1 times [2023-12-16 07:03:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87619562] [2023-12-16 07:03:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:03:08,257 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 [2023-12-16 07:03:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:08,264 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) [2023-12-16 07:03:08,267 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 [2023-12-16 07:03:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:03:08,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:03:08,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:08,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:03:08,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:03:08,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:08,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87619562] [2023-12-16 07:03:08,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87619562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:03:08,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:03:08,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 07:03:08,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4999682] [2023-12-16 07:03:08,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:03:08,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 07:03:08,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:08,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 07:03:08,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:03:08,320 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:08,352 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2023-12-16 07:03:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 07:03:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-16 07:03:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:08,353 INFO L225 Difference]: With dead ends: 42 [2023-12-16 07:03:08,353 INFO L226 Difference]: Without dead ends: 23 [2023-12-16 07:03:08,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 07:03:08,363 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:08,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:03:08,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-12-16 07:03:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-12-16 07:03:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-12-16 07:03:08,389 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 15 [2023-12-16 07:03:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:08,389 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-12-16 07:03:08,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,389 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-12-16 07:03:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 07:03:08,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:08,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:08,395 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 (4)] Ended with exit code 0 [2023-12-16 07:03:08,591 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 [2023-12-16 07:03:08,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:08,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:08,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1551696557, now seen corresponding path program 1 times [2023-12-16 07:03:08,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:08,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086717196] [2023-12-16 07:03:08,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:03:08,592 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 [2023-12-16 07:03:08,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:08,593 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2023-12-16 07:03:08,595 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 (5)] Waiting until timeout for monitored process [2023-12-16 07:03:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:03:08,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 07:03:08,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:03:08,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:03:08,712 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:08,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086717196] [2023-12-16 07:03:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086717196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:08,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:08,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 07:03:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043579375] [2023-12-16 07:03:08,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:08,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 07:03:08,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:08,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 07:03:08,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:03:08,725 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:08,779 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2023-12-16 07:03:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:03:08,780 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-16 07:03:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:08,780 INFO L225 Difference]: With dead ends: 43 [2023-12-16 07:03:08,780 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 07:03:08,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-16 07:03:08,781 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:08,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:03:08,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 07:03:08,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 07:03:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-16 07:03:08,785 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2023-12-16 07:03:08,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:08,785 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-16 07:03:08,785 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:08,785 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-16 07:03:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 07:03:08,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:08,786 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:08,794 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 (5)] Ended with exit code 0 [2023-12-16 07:03:08,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /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 [2023-12-16 07:03:08,988 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:08,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash -896346397, now seen corresponding path program 2 times [2023-12-16 07:03:08,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:08,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898920775] [2023-12-16 07:03:08,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:03:08,989 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 [2023-12-16 07:03:08,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:08,990 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) [2023-12-16 07:03:09,014 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 [2023-12-16 07:03:09,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-16 07:03:09,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:03:09,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 07:03:09,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 07:03:09,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 07:03:09,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:09,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898920775] [2023-12-16 07:03:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898920775] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 07:03:09,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 07:03:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 07:03:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203271531] [2023-12-16 07:03:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 07:03:09,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 07:03:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 07:03:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:03:09,090 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:09,139 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2023-12-16 07:03:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 07:03:09,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-16 07:03:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:09,140 INFO L225 Difference]: With dead ends: 36 [2023-12-16 07:03:09,140 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 07:03:09,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 07:03:09,141 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:09,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 11 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 07:03:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 07:03:09,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 07:03:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-16 07:03:09,144 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 17 [2023-12-16 07:03:09,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:09,144 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-16 07:03:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:09,144 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-16 07:03:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 07:03:09,145 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:09,145 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:09,162 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 (6)] Ended with exit code 0 [2023-12-16 07:03:09,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 07:03:09,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:09,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1865382421, now seen corresponding path program 1 times [2023-12-16 07:03:09,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:09,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508626596] [2023-12-16 07:03:09,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 07:03:09,348 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 [2023-12-16 07:03:09,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:09,351 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2023-12-16 07:03:09,396 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 (7)] Waiting until timeout for monitored process [2023-12-16 07:03:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:03:09,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 07:03:09,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 07:03:09,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 07:03:09,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:09,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508626596] [2023-12-16 07:03:09,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508626596] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:09,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:09,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-16 07:03:09,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556895388] [2023-12-16 07:03:09,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:09,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 07:03:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:09,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 07:03:09,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-16 07:03:09,646 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:09,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:09,824 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2023-12-16 07:03:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 07:03:09,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-16 07:03:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:09,825 INFO L225 Difference]: With dead ends: 59 [2023-12-16 07:03:09,825 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 07:03:09,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-16 07:03:09,826 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:09,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 39 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 07:03:09,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 07:03:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2023-12-16 07:03:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-12-16 07:03:09,830 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2023-12-16 07:03:09,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:09,831 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-12-16 07:03:09,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:09,831 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-12-16 07:03:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 07:03:09,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:09,831 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:09,836 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 (7)] Ended with exit code 0 [2023-12-16 07:03:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /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 [2023-12-16 07:03:10,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash 909538577, now seen corresponding path program 2 times [2023-12-16 07:03:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112696146] [2023-12-16 07:03:10,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:03:10,035 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 [2023-12-16 07:03:10,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:10,038 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) [2023-12-16 07:03:10,039 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 [2023-12-16 07:03:10,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 07:03:10,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:03:10,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 07:03:10,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:10,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:03:10,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2023-12-16 07:03:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 07:03:10,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:10,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:03:10,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 63 [2023-12-16 07:03:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-16 07:03:15,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:15,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112696146] [2023-12-16 07:03:15,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112696146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:15,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:15,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-16 07:03:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573323161] [2023-12-16 07:03:15,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 07:03:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 07:03:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=200, Unknown=1, NotChecked=0, Total=240 [2023-12-16 07:03:15,165 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:15,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:15,619 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2023-12-16 07:03:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:03:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-16 07:03:15,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:15,621 INFO L225 Difference]: With dead ends: 42 [2023-12-16 07:03:15,621 INFO L226 Difference]: Without dead ends: 38 [2023-12-16 07:03:15,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=44, Invalid=227, Unknown=1, NotChecked=0, Total=272 [2023-12-16 07:03:15,621 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:15,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 78 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 07:03:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-16 07:03:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-12-16 07:03:15,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2023-12-16 07:03:15,646 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2023-12-16 07:03:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:15,647 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2023-12-16 07:03:15,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2023-12-16 07:03:15,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 07:03:15,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:15,647 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:15,652 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 (8)] Ended with exit code 0 [2023-12-16 07:03:15,852 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 [2023-12-16 07:03:15,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:15,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1120376093, now seen corresponding path program 3 times [2023-12-16 07:03:15,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:15,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121941310] [2023-12-16 07:03:15,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 07:03:15,853 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 [2023-12-16 07:03:15,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:15,855 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2023-12-16 07:03:15,856 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 (9)] Waiting until timeout for monitored process [2023-12-16 07:03:16,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 07:03:16,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:03:16,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-16 07:03:16,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 07:03:16,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:16,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-16 07:03:16,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121941310] [2023-12-16 07:03:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121941310] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:16,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-12-16 07:03:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864859138] [2023-12-16 07:03:16,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 07:03:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 07:03:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-16 07:03:16,638 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:16,981 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2023-12-16 07:03:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 07:03:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-16 07:03:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:16,983 INFO L225 Difference]: With dead ends: 70 [2023-12-16 07:03:16,983 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 07:03:16,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-12-16 07:03:16,984 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:16,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 55 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:03:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 07:03:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-16 07:03:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2023-12-16 07:03:16,989 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2023-12-16 07:03:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:16,990 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2023-12-16 07:03:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2023-12-16 07:03:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 07:03:16,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:16,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:17,008 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 (9)] Ended with exit code 0 [2023-12-16 07:03:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /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 [2023-12-16 07:03:17,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:17,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1343294611, now seen corresponding path program 4 times [2023-12-16 07:03:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357506878] [2023-12-16 07:03:17,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 07:03:17,197 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 [2023-12-16 07:03:17,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:17,198 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) [2023-12-16 07:03:17,207 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 [2023-12-16 07:03:17,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 07:03:17,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:03:17,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-16 07:03:17,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:17,431 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:03:17,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-16 07:03:17,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:17,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357506878] [2023-12-16 07:03:17,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357506878] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:17,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:17,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2023-12-16 07:03:17,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057317405] [2023-12-16 07:03:17,645 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:17,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 07:03:17,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 07:03:17,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-12-16 07:03:17,646 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:17,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:18,000 INFO L93 Difference]: Finished difference Result 78 states and 98 transitions. [2023-12-16 07:03:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 07:03:18,000 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-16 07:03:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:18,001 INFO L225 Difference]: With dead ends: 78 [2023-12-16 07:03:18,001 INFO L226 Difference]: Without dead ends: 55 [2023-12-16 07:03:18,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-12-16 07:03:18,002 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 126 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:18,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 51 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 07:03:18,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-16 07:03:18,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30. [2023-12-16 07:03:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-12-16 07:03:18,006 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 26 [2023-12-16 07:03:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:18,006 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-12-16 07:03:18,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-12-16 07:03:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 07:03:18,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:18,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:18,026 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 [2023-12-16 07:03:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 07:03:18,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:18,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -360312821, now seen corresponding path program 5 times [2023-12-16 07:03:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:18,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916920952] [2023-12-16 07:03:18,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 07:03:18,211 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 [2023-12-16 07:03:18,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:18,212 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-16 07:03:18,216 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 (11)] Waiting until timeout for monitored process [2023-12-16 07:03:29,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-16 07:03:29,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:03:29,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 07:03:29,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:29,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 07:03:29,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 07:03:29,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-16 07:03:29,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 07:03:29,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 30 [2023-12-16 07:03:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 07:03:30,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 07:03:32,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:32,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916920952] [2023-12-16 07:03:32,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916920952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:32,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2023-12-16 07:03:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795624403] [2023-12-16 07:03:32,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:32,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 07:03:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 07:03:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-12-16 07:03:32,075 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:33,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:33,309 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-12-16 07:03:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 07:03:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-16 07:03:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:33,322 INFO L225 Difference]: With dead ends: 50 [2023-12-16 07:03:33,322 INFO L226 Difference]: Without dead ends: 46 [2023-12-16 07:03:33,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-12-16 07:03:33,322 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:33,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 07:03:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-16 07:03:33,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2023-12-16 07:03:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-12-16 07:03:33,331 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 29 [2023-12-16 07:03:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:33,331 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-12-16 07:03:33,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-12-16 07:03:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 07:03:33,332 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:33,332 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:33,356 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 (11)] Ended with exit code 0 [2023-12-16 07:03:33,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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 [2023-12-16 07:03:33,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:33,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1171913621, now seen corresponding path program 6 times [2023-12-16 07:03:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:33,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856927358] [2023-12-16 07:03:33,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 07:03:33,549 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 [2023-12-16 07:03:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:33,551 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) [2023-12-16 07:03:33,601 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 [2023-12-16 07:03:33,728 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-16 07:03:33,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 07:03:33,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 07:03:33,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 07:03:33,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-12-16 07:03:34,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:34,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856927358] [2023-12-16 07:03:34,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856927358] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:34,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:34,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-16 07:03:34,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019031663] [2023-12-16 07:03:34,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:34,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 07:03:34,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 07:03:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-12-16 07:03:34,134 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:34,420 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2023-12-16 07:03:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 07:03:34,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-16 07:03:34,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:34,421 INFO L225 Difference]: With dead ends: 84 [2023-12-16 07:03:34,421 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 07:03:34,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-16 07:03:34,422 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 33 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:34,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 57 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 07:03:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 07:03:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-16 07:03:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2023-12-16 07:03:34,429 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 30 [2023-12-16 07:03:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:34,429 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2023-12-16 07:03:34,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2023-12-16 07:03:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 07:03:34,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:34,430 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:34,436 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 (12)] Ended with exit code 0 [2023-12-16 07:03:34,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 07:03:34,637 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:34,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:34,637 INFO L85 PathProgramCache]: Analyzing trace with hash 130105889, now seen corresponding path program 7 times [2023-12-16 07:03:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975806645] [2023-12-16 07:03:34,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 07:03:34,638 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 [2023-12-16 07:03:34,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:34,656 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-16 07:03:34,687 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 (13)] Waiting until timeout for monitored process [2023-12-16 07:03:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 07:03:34,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 07:03:34,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 07:03:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 07:03:34,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 07:03:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-16 07:03:35,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 07:03:35,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975806645] [2023-12-16 07:03:35,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975806645] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 07:03:35,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 07:03:35,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2023-12-16 07:03:35,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550394883] [2023-12-16 07:03:35,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 07:03:35,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 07:03:35,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 07:03:35,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 07:03:35,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-12-16 07:03:35,267 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 07:03:35,865 INFO L93 Difference]: Finished difference Result 91 states and 111 transitions. [2023-12-16 07:03:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 07:03:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-12-16 07:03:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 07:03:35,866 INFO L225 Difference]: With dead ends: 91 [2023-12-16 07:03:35,866 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 07:03:35,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2023-12-16 07:03:35,867 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 304 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 07:03:35,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 57 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 07:03:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 07:03:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 35. [2023-12-16 07:03:35,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-12-16 07:03:35,875 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 31 [2023-12-16 07:03:35,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 07:03:35,875 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-12-16 07:03:35,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 07:03:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-12-16 07:03:35,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 07:03:35,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 07:03:35,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 07:03:35,894 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 (13)] Forceful destruction successful, exit code 0 [2023-12-16 07:03:36,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-16 07:03:36,081 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 07:03:36,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 07:03:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1688059631, now seen corresponding path program 8 times [2023-12-16 07:03:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 07:03:36,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439065724] [2023-12-16 07:03:36,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 07:03:36,082 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 [2023-12-16 07:03:36,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 07:03:36,083 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) [2023-12-16 07:03:36,088 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 Received shutdown request... [2023-12-16 07:04:27,455 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:04:27,486 WARN L340 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)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 07:04:28,491 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 0 [2023-12-16 07:04:28,688 WARN L435 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)] Forcibly destroying the process [2023-12-16 07:04:28,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-16 07:04:28,715 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 07:04:28,718 WARN L435 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)] Forcibly destroying the process [2023-12-16 07:04:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 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 [2023-12-16 07:04:28,718 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 35 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1439065724] and IpTcStrategyModuleCvc4 [1735523480]. [2023-12-16 07:04:28,721 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1] [2023-12-16 07:04:28,723 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 07:04:28,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 07:04:28 BoogieIcfgContainer [2023-12-16 07:04:28,724 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 07:04:28,729 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 137 [2023-12-16 07:04:28,730 INFO L158 Benchmark]: Toolchain (without parser) took 82139.74ms. Allocated memory is still 296.7MB. Free memory was 242.0MB in the beginning and 154.5MB in the end (delta: 87.5MB). Peak memory consumption was 88.6MB. Max. memory is 8.0GB. [2023-12-16 07:04:28,730 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 07:04:28,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.69ms. Allocated memory is still 296.7MB. Free memory was 242.0MB in the beginning and 230.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 07:04:28,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.42ms. Allocated memory is still 296.7MB. Free memory was 230.4MB in the beginning and 228.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 07:04:28,731 INFO L158 Benchmark]: Boogie Preprocessor took 28.74ms. Allocated memory is still 296.7MB. Free memory was 228.9MB in the beginning and 226.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 07:04:28,731 INFO L158 Benchmark]: RCFGBuilder took 331.80ms. Allocated memory is still 296.7MB. Free memory was 226.2MB in the beginning and 210.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 07:04:28,731 INFO L158 Benchmark]: TraceAbstraction took 81539.68ms. Allocated memory is still 296.7MB. Free memory was 210.0MB in the beginning and 154.5MB in the end (delta: 55.5MB). Peak memory consumption was 57.1MB. Max. memory is 8.0GB. [2023-12-16 07:04:28,732 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 155.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.69ms. Allocated memory is still 296.7MB. Free memory was 242.0MB in the beginning and 230.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.42ms. Allocated memory is still 296.7MB. Free memory was 230.4MB in the beginning and 228.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.74ms. Allocated memory is still 296.7MB. Free memory was 228.9MB in the beginning and 226.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 331.80ms. Allocated memory is still 296.7MB. Free memory was 226.2MB in the beginning and 210.5MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 81539.68ms. Allocated memory is still 296.7MB. Free memory was 210.0MB in the beginning and 154.5MB in the end (delta: 55.5MB). Peak memory consumption was 57.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 8]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 8). Cancelled while NwaCegarLoop was analyzing trace of length 35 with TraceHistMax 4,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleMathsat [1439065724] and IpTcStrategyModuleCvc4 [1735523480]. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 81.5s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 607 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 607 mSDsluCounter, 542 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 414 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1872 IncrementalHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 128 mSDtfsCounter, 1872 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 310 SyntacticMatches, 7 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=11, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 80 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 12.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 261 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 442 ConstructedInterpolants, 3 QuantifiedInterpolants, 3210 SizeOfPredicates, 31 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 160/335 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown