/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/loops-crafted-1/mono-crafted_13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:35:39,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:35:39,947 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 16:35:39,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:35:39,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:35:39,965 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:35:39,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:35:39,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:35:39,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:35:39,966 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:35:39,966 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:35:39,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:35:39,967 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:35:39,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:35:39,968 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:35:39,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:35:39,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:35:39,968 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:35:39,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:35:39,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:35:39,969 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:35:39,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:35:39,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:35:39,972 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:35:39,972 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:35:39,973 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:35:39,973 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:35:39,973 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:35:39,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:35:39,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:35:39,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:35:39,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:35:39,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:35:39,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:35:39,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:35:39,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:35:39,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:35:39,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:35:39,975 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:35:39,976 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:35:39,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:35:39,979 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:35:39,979 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:35:39,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:35:39,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:35:39,979 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:35:39,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:35:40,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:35:40,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:35:40,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:35:40,189 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:35:40,189 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:35:40,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c [2023-12-16 16:35:41,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:35:41,358 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:35:41,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c [2023-12-16 16:35:41,369 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3baab905/d70020f102104602b3bf94eb987e7e9f/FLAG1a4773fae [2023-12-16 16:35:41,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3baab905/d70020f102104602b3bf94eb987e7e9f [2023-12-16 16:35:41,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:35:41,383 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:35:41,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:35:41,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:35:41,390 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:35:41,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49370e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41, skipping insertion in model container [2023-12-16 16:35:41,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,404 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:35:41,520 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c[319,332] [2023-12-16 16:35:41,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:35:41,544 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:35:41,553 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_13.c[319,332] [2023-12-16 16:35:41,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:35:41,567 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:35:41,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41 WrapperNode [2023-12-16 16:35:41,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:35:41,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:35:41,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:35:41,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:35:41,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,591 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2023-12-16 16:35:41,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:35:41,592 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:35:41,592 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:35:41,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:35:41,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,619 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:35:41,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:35:41,634 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:35:41,634 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:35:41,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:35:41,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (1/1) ... [2023-12-16 16:35:41,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:35:41,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:35:41,656 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 16:35:41,693 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 16:35:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:35:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:35:41,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:35:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:35:41,754 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:35:41,757 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:35:41,888 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:35:41,907 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:35:41,907 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 16:35:41,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:35:41 BoogieIcfgContainer [2023-12-16 16:35:41,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:35:41,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:35:41,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:35:41,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:35:41,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:35:41" (1/3) ... [2023-12-16 16:35:41,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb77398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:35:41, skipping insertion in model container [2023-12-16 16:35:41,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:35:41" (2/3) ... [2023-12-16 16:35:41,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb77398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:35:41, skipping insertion in model container [2023-12-16 16:35:41,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:35:41" (3/3) ... [2023-12-16 16:35:41,913 INFO L112 eAbstractionObserver]: Analyzing ICFG mono-crafted_13.c [2023-12-16 16:35:41,924 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:35:41,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:35:41,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:35:41,994 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;@31971dd7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:35:41,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:35:41,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 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 16:35:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 16:35:42,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:42,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 16:35:42,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:42,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:42,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2043540179, now seen corresponding path program 1 times [2023-12-16 16:35:42,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513066363] [2023-12-16 16:35:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:42,024 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 16:35:42,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:42,040 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 16:35:42,041 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 16:35:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:42,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:35:42,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:42,109 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 16:35:42,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:35:42,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513066363] [2023-12-16 16:35:42,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513066363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:35:42,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:35:42,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:35:42,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161799070] [2023-12-16 16:35:42,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:35:42,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:35:42,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:35:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:35:42,130 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 9 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:35:42,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:42,141 INFO L93 Difference]: Finished difference Result 17 states and 24 transitions. [2023-12-16 16:35:42,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:35:42,143 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-16 16:35:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:42,147 INFO L225 Difference]: With dead ends: 17 [2023-12-16 16:35:42,147 INFO L226 Difference]: Without dead ends: 8 [2023-12-16 16:35:42,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 16:35:42,150 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:42,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-12-16 16:35:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-12-16 16:35:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 16:35:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2023-12-16 16:35:42,168 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2023-12-16 16:35:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:42,169 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 10 transitions. [2023-12-16 16:35:42,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:35:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions. [2023-12-16 16:35:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 16:35:42,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:42,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 16:35:42,187 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 16:35:42,371 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 16:35:42,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:42,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2052775389, now seen corresponding path program 1 times [2023-12-16 16:35:42,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:42,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696377598] [2023-12-16 16:35:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:42,373 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 16:35:42,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:42,390 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 16:35:42,391 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 16:35:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:42,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:35:42,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:42,459 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 16:35:42,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:35:42,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:42,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696377598] [2023-12-16 16:35:42,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696377598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:35:42,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:35:42,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:35:42,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585137858] [2023-12-16 16:35:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:35:42,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:35:42,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:42,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:35:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:35:42,462 INFO L87 Difference]: Start difference. First operand 8 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:35:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:42,505 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2023-12-16 16:35:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:35:42,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-12-16 16:35:42,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:42,506 INFO L225 Difference]: With dead ends: 17 [2023-12-16 16:35:42,506 INFO L226 Difference]: Without dead ends: 10 [2023-12-16 16:35:42,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 16:35:42,507 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:42,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-12-16 16:35:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-12-16 16:35:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-12-16 16:35:42,514 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2023-12-16 16:35:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:42,515 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-12-16 16:35:42,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:35:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-12-16 16:35:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 16:35:42,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:42,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:42,526 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 16:35:42,722 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 16:35:42,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:42,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 82784800, now seen corresponding path program 1 times [2023-12-16 16:35:42,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:42,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333002959] [2023-12-16 16:35:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:42,724 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 16:35:42,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:42,725 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 16:35:42,726 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 16:35:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:42,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 16:35:42,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:42,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:42,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333002959] [2023-12-16 16:35:42,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333002959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:42,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:42,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-16 16:35:42,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616654662] [2023-12-16 16:35:42,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:35:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:35:42,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:35:42,789 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:42,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:42,825 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2023-12-16 16:35:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:35:42,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-16 16:35:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:42,826 INFO L225 Difference]: With dead ends: 21 [2023-12-16 16:35:42,826 INFO L226 Difference]: Without dead ends: 14 [2023-12-16 16:35:42,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:35:42,827 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:42,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:42,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-16 16:35:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-12-16 16:35:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 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 16:35:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-12-16 16:35:42,830 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 8 [2023-12-16 16:35:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:42,830 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-12-16 16:35:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:35:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2023-12-16 16:35:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 16:35:42,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:42,831 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:42,832 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 16:35:43,032 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 16:35:43,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:43,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:43,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1997098600, now seen corresponding path program 1 times [2023-12-16 16:35:43,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246785426] [2023-12-16 16:35:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:43,034 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 16:35:43,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:43,035 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 16:35:43,036 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 16:35:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:43,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 16:35:43,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:43,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:43,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246785426] [2023-12-16 16:35:43,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246785426] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:43,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:43,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-16 16:35:43,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174975318] [2023-12-16 16:35:43,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 16:35:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:43,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 16:35:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:35:43,147 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 16:35:43,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:43,217 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2023-12-16 16:35:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 16:35:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 12 [2023-12-16 16:35:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:43,218 INFO L225 Difference]: With dead ends: 29 [2023-12-16 16:35:43,218 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 16:35:43,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:35:43,219 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:43,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:35:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 16:35:43,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-16 16:35:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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 16:35:43,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-12-16 16:35:43,223 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2023-12-16 16:35:43,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:43,223 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-12-16 16:35:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 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 16:35:43,224 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-12-16 16:35:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 16:35:43,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:43,224 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:43,237 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 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:43,439 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 16:35:43,440 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:43,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:43,440 INFO L85 PathProgramCache]: Analyzing trace with hash 161466124, now seen corresponding path program 2 times [2023-12-16 16:35:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268175427] [2023-12-16 16:35:43,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:35:43,441 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 16:35:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:43,442 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 16:35:43,454 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 16:35:43,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:35:43,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:43,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 16:35:43,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:43,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:35:43,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:43,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268175427] [2023-12-16 16:35:43,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268175427] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:43,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:43,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2023-12-16 16:35:43,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674731432] [2023-12-16 16:35:43,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:43,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 16:35:43,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:43,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 16:35:43,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-12-16 16:35:43,928 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 16:35:45,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:45,105 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2023-12-16 16:35:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 16:35:45,106 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 20 [2023-12-16 16:35:45,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:45,107 INFO L225 Difference]: With dead ends: 100 [2023-12-16 16:35:45,107 INFO L226 Difference]: Without dead ends: 88 [2023-12-16 16:35:45,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=399, Invalid=861, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 16:35:45,109 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 140 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:45,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 49 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 16:35:45,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-16 16:35:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 32. [2023-12-16 16:35:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 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 16:35:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-12-16 16:35:45,115 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 20 [2023-12-16 16:35:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:45,115 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-12-16 16:35:45,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 19 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 16:35:45,115 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-12-16 16:35:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 16:35:45,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:45,116 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:45,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:45,318 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 16:35:45,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:45,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:45,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1729157699, now seen corresponding path program 1 times [2023-12-16 16:35:45,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:45,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106675181] [2023-12-16 16:35:45,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:35:45,319 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 16:35:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:45,320 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 16:35:45,321 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 16:35:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:35:45,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 16:35:45,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:35:45,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:35:45,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:45,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106675181] [2023-12-16 16:35:45,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106675181] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:45,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:45,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-12-16 16:35:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029460035] [2023-12-16 16:35:45,636 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:45,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 16:35:45,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 16:35:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-16 16:35:45,637 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 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 16:35:46,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:46,037 INFO L93 Difference]: Finished difference Result 67 states and 96 transitions. [2023-12-16 16:35:46,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 16:35:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-16 16:35:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:46,038 INFO L225 Difference]: With dead ends: 67 [2023-12-16 16:35:46,039 INFO L226 Difference]: Without dead ends: 50 [2023-12-16 16:35:46,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=223, Invalid=377, Unknown=0, NotChecked=0, Total=600 [2023-12-16 16:35:46,040 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:46,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:35:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-16 16:35:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-12-16 16:35:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 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 16:35:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-12-16 16:35:46,047 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 23 [2023-12-16 16:35:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:46,047 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-12-16 16:35:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 17 states have internal predecessors, (40), 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 16:35:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-12-16 16:35:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 16:35:46,048 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:46,048 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:46,055 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 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:46,250 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 16:35:46,251 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:46,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1185798658, now seen corresponding path program 2 times [2023-12-16 16:35:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:46,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743940462] [2023-12-16 16:35:46,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 16:35:46,252 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 16:35:46,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:46,253 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 16:35:46,255 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 16:35:46,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 16:35:46,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:46,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 16:35:46,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:46,508 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:35:46,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:35:47,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:47,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743940462] [2023-12-16 16:35:47,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743940462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:47,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:47,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2023-12-16 16:35:47,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858100892] [2023-12-16 16:35:47,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:47,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-16 16:35:47,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:47,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-16 16:35:47,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1009, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 16:35:47,170 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 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 16:35:48,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:48,774 INFO L93 Difference]: Finished difference Result 78 states and 109 transitions. [2023-12-16 16:35:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 16:35:48,775 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 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 41 [2023-12-16 16:35:48,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:48,776 INFO L225 Difference]: With dead ends: 78 [2023-12-16 16:35:48,776 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 16:35:48,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=703, Invalid=1459, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 16:35:48,777 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:48,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 81 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:35:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 16:35:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-16 16:35:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2) internal successors, (72), 60 states have internal predecessors, (72), 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 16:35:48,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2023-12-16 16:35:48,783 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 41 [2023-12-16 16:35:48,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:48,784 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2023-12-16 16:35:48,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.026315789473684) internal successors, (77), 37 states have internal predecessors, (77), 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 16:35:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2023-12-16 16:35:48,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-16 16:35:48,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:48,788 INFO L195 NwaCegarLoop]: trace histogram [27, 17, 10, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:48,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:48,990 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 16:35:48,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:48,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:48,991 INFO L85 PathProgramCache]: Analyzing trace with hash 448954366, now seen corresponding path program 3 times [2023-12-16 16:35:48,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:48,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911082823] [2023-12-16 16:35:48,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:35:48,992 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 16:35:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:48,993 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 16:35:48,995 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 16:35:49,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-12-16 16:35:49,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:49,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 16:35:49,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-16 16:35:49,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 423 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-16 16:35:49,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911082823] [2023-12-16 16:35:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911082823] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:49,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:49,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-16 16:35:49,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568508782] [2023-12-16 16:35:49,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 16:35:49,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 16:35:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-16 16:35:49,742 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 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 16:35:51,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:51,688 INFO L93 Difference]: Finished difference Result 439 states and 648 transitions. [2023-12-16 16:35:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 16:35:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 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) Word has length 60 [2023-12-16 16:35:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:51,700 INFO L225 Difference]: With dead ends: 439 [2023-12-16 16:35:51,700 INFO L226 Difference]: Without dead ends: 435 [2023-12-16 16:35:51,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 16:35:51,701 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 218 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:51,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 324 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 16:35:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-12-16 16:35:51,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 315. [2023-12-16 16:35:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.4585987261146496) internal successors, (458), 314 states have internal predecessors, (458), 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 16:35:51,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 458 transitions. [2023-12-16 16:35:51,774 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 458 transitions. Word has length 60 [2023-12-16 16:35:51,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:51,774 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 458 transitions. [2023-12-16 16:35:51,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.125) internal successors, (51), 23 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 16:35:51,774 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 458 transitions. [2023-12-16 16:35:51,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 16:35:51,775 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:51,776 INFO L195 NwaCegarLoop]: trace histogram [27, 17, 10, 2, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:51,786 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 (9)] Forceful destruction successful, exit code 0 [2023-12-16 16:35:51,978 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 16:35:51,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:51,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2001708542, now seen corresponding path program 3 times [2023-12-16 16:35:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:51,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586205466] [2023-12-16 16:35:51,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 16:35:51,980 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 16:35:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:51,980 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 16:35:52,008 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 16:35:52,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-12-16 16:35:52,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:52,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 16:35:52,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:35:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 426 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-16 16:35:52,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:35:54,277 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 426 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2023-12-16 16:35:54,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:35:54,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586205466] [2023-12-16 16:35:54,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586205466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:35:54,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:35:54,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-12-16 16:35:54,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299105872] [2023-12-16 16:35:54,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:35:54,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 16:35:54,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:35:54,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 16:35:54,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2023-12-16 16:35:54,279 INFO L87 Difference]: Start difference. First operand 315 states and 458 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 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 16:35:59,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:35:59,670 INFO L93 Difference]: Finished difference Result 445 states and 647 transitions. [2023-12-16 16:35:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 16:35:59,671 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 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 62 [2023-12-16 16:35:59,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:35:59,674 INFO L225 Difference]: With dead ends: 445 [2023-12-16 16:35:59,674 INFO L226 Difference]: Without dead ends: 441 [2023-12-16 16:35:59,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=495, Invalid=987, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 16:35:59,675 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 229 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 16:35:59,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 350 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 16:35:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-12-16 16:35:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 321. [2023-12-16 16:35:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.453125) internal successors, (465), 320 states have internal predecessors, (465), 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 16:35:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 465 transitions. [2023-12-16 16:35:59,724 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 465 transitions. Word has length 62 [2023-12-16 16:35:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:35:59,725 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 465 transitions. [2023-12-16 16:35:59,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 26 states have internal predecessors, (55), 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 16:35:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 465 transitions. [2023-12-16 16:35:59,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-16 16:35:59,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:35:59,726 INFO L195 NwaCegarLoop]: trace histogram [28, 17, 11, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 16:35:59,734 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 16:35:59,929 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 16:35:59,930 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:35:59,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:35:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash -67885, now seen corresponding path program 4 times [2023-12-16 16:35:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:35:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079936238] [2023-12-16 16:35:59,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 16:35:59,931 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 16:35:59,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:35:59,934 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 16:35:59,935 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 16:35:59,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 16:35:59,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:35:59,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 16:35:59,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:36:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 378 proven. 306 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 16:36:00,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:36:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 378 proven. 306 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 16:36:00,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:36:00,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079936238] [2023-12-16 16:36:00,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079936238] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:36:00,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:36:00,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2023-12-16 16:36:00,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425962317] [2023-12-16 16:36:00,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:36:00,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-16 16:36:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:36:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-16 16:36:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1009, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 16:36:00,895 INFO L87 Difference]: Start difference. First operand 321 states and 465 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 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 16:36:03,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:36:03,790 INFO L93 Difference]: Finished difference Result 643 states and 949 transitions. [2023-12-16 16:36:03,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 16:36:03,790 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 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 65 [2023-12-16 16:36:03,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:36:03,792 INFO L225 Difference]: With dead ends: 643 [2023-12-16 16:36:03,792 INFO L226 Difference]: Without dead ends: 359 [2023-12-16 16:36:03,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1043, Invalid=1927, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 16:36:03,798 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:36:03,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 16:36:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-12-16 16:36:03,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2023-12-16 16:36:03,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.405027932960894) internal successors, (503), 358 states have internal predecessors, (503), 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 16:36:03,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 503 transitions. [2023-12-16 16:36:03,833 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 503 transitions. Word has length 65 [2023-12-16 16:36:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:36:03,833 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 503 transitions. [2023-12-16 16:36:03,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 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 16:36:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 503 transitions. [2023-12-16 16:36:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 16:36:03,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:36:03,834 INFO L195 NwaCegarLoop]: trace histogram [47, 36, 11, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 16:36:03,837 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 (11)] Forceful destruction successful, exit code 0 [2023-12-16 16:36:04,037 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 16:36:04,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:36:04,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:36:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 845154924, now seen corresponding path program 5 times [2023-12-16 16:36:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:36:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734923097] [2023-12-16 16:36:04,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 16:36:04,039 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 16:36:04,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:36:04,039 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 16:36:04,040 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 16:36:04,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-12-16 16:36:04,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:36:04,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-16 16:36:04,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:36:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2215 backedges. 777 proven. 1332 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 16:36:04,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:36:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2215 backedges. 777 proven. 1332 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-16 16:36:08,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:36:08,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734923097] [2023-12-16 16:36:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734923097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:36:08,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:36:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 39] total 76 [2023-12-16 16:36:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971627985] [2023-12-16 16:36:08,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:36:08,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-16 16:36:08,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:36:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-16 16:36:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=4294, Unknown=0, NotChecked=0, Total=5852 [2023-12-16 16:36:08,944 INFO L87 Difference]: Start difference. First operand 359 states and 503 transitions. Second operand has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 76 states have internal predecessors, (158), 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 16:36:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:36:54,549 INFO L93 Difference]: Finished difference Result 1771 states and 2528 transitions. [2023-12-16 16:36:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-12-16 16:36:54,550 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 76 states have internal predecessors, (158), 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 103 [2023-12-16 16:36:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:36:54,555 INFO L225 Difference]: With dead ends: 1771 [2023-12-16 16:36:54,555 INFO L226 Difference]: Without dead ends: 1487 [2023-12-16 16:36:54,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 46.9s TimeCoverageRelationStatistics Valid=7102, Invalid=14950, Unknown=0, NotChecked=0, Total=22052 [2023-12-16 16:36:54,560 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 2184 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2956 mSolverCounterSat, 742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 742 IncrementalHoareTripleChecker+Valid, 2956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:36:54,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 160 Invalid, 3698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [742 Valid, 2956 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 16:36:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2023-12-16 16:36:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1299. [2023-12-16 16:36:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1298 states have (on average 1.1117103235747303) internal successors, (1443), 1298 states have internal predecessors, (1443), 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 16:36:54,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1443 transitions. [2023-12-16 16:36:54,789 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1443 transitions. Word has length 103 [2023-12-16 16:36:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:36:54,789 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1443 transitions. [2023-12-16 16:36:54,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 76 states have internal predecessors, (158), 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 16:36:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1443 transitions. [2023-12-16 16:36:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-16 16:36:54,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:36:54,791 INFO L195 NwaCegarLoop]: trace histogram [85, 74, 11, 3, 1, 1, 1, 1, 1, 1] [2023-12-16 16:36:54,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-16 16:36:54,994 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 16:36:54,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:36:54,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:36:54,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1214459554, now seen corresponding path program 6 times [2023-12-16 16:36:54,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:36:54,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937541941] [2023-12-16 16:36:54,995 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 16:36:54,995 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 16:36:54,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:36:54,997 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 16:36:54,997 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 16:36:55,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2023-12-16 16:36:55,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 16:36:55,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 16:36:55,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:36:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7231 backedges. 0 proven. 1681 refuted. 0 times theorem prover too weak. 5550 trivial. 0 not checked. [2023-12-16 16:36:55,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 16:36:57,573 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:36:57,576 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 (13)] Ended with exit code 0 [2023-12-16 16:36:57,601 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:36:57,613 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 16:36:57,773 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 16:36:57,774 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 180 with TraceHistMax 85,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. [2023-12-16 16:36:57,777 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1, 1] [2023-12-16 16:36:57,779 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:36:57,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:36:57 BoogieIcfgContainer [2023-12-16 16:36:57,780 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:36:57,781 INFO L158 Benchmark]: Toolchain (without parser) took 76397.70ms. Allocated memory was 166.7MB in the beginning and 269.5MB in the end (delta: 102.8MB). Free memory was 118.5MB in the beginning and 105.8MB in the end (delta: 12.8MB). Peak memory consumption was 116.8MB. Max. memory is 8.0GB. [2023-12-16 16:36:57,781 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 166.7MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:36:57,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.45ms. Allocated memory is still 166.7MB. Free memory was 118.2MB in the beginning and 107.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 16:36:57,781 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.34ms. Allocated memory is still 166.7MB. Free memory was 107.2MB in the beginning and 105.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:36:57,781 INFO L158 Benchmark]: Boogie Preprocessor took 41.59ms. Allocated memory is still 166.7MB. Free memory was 105.6MB in the beginning and 103.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:36:57,781 INFO L158 Benchmark]: RCFGBuilder took 273.84ms. Allocated memory is still 166.7MB. Free memory was 103.9MB in the beginning and 93.0MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 16:36:57,782 INFO L158 Benchmark]: TraceAbstraction took 75871.19ms. Allocated memory was 166.7MB in the beginning and 269.5MB in the end (delta: 102.8MB). Free memory was 92.4MB in the beginning and 105.8MB in the end (delta: -13.4MB). Peak memory consumption was 90.6MB. Max. memory is 8.0GB. [2023-12-16 16:36:57,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 166.7MB. Free memory is still 125.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.45ms. Allocated memory is still 166.7MB. Free memory was 118.2MB in the beginning and 107.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 21.34ms. Allocated memory is still 166.7MB. Free memory was 107.2MB in the beginning and 105.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 41.59ms. Allocated memory is still 166.7MB. Free memory was 105.6MB in the beginning and 103.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 273.84ms. Allocated memory is still 166.7MB. Free memory was 103.9MB in the beginning and 93.0MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 75871.19ms. Allocated memory was 166.7MB in the beginning and 269.5MB in the end (delta: 102.8MB). Free memory was 92.4MB in the beginning and 105.8MB in the end (delta: -13.4MB). Peak memory consumption was 90.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 4). Cancelled while NwaCegarLoop was analyzing trace of length 180 with TraceHistMax 85,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 30 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.8s, OverallIterations: 12, TraceHistogramMax: 85, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 59.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2785 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2785 mSDsluCounter, 1107 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 990 mSDsCounter, 1032 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5352 IncrementalHoareTripleChecker+Invalid, 6384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1032 mSolverCounterUnsat, 117 mSDtfsCounter, 5352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 926 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 385 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3086 ImplicationChecksByTransitivity, 61.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=11, InterpolantAutomatonStates: 299, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 485 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 406 NumberOfCodeBlocks, 374 NumberOfCodeBlocksAsserted, 98 NumberOfCheckSat, 780 ConstructedInterpolants, 0 QuantifiedInterpolants, 4363 SizeOfPredicates, 85 NumberOfNonLiveVariables, 857 ConjunctsInSsa, 224 ConjunctsInUnsatCore, 20 InterpolantComputations, 2 PerfectInterpolantSequences, 3984/9760 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