/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-examples/standard_compareModified_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 15:27:48,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 15:27:48,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-21 15:27:48,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 15:27:48,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 15:27:48,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 15:27:48,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 15:27:48,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 15:27:48,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 15:27:48,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 15:27:48,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 15:27:48,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 15:27:48,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 15:27:48,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 15:27:48,867 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 15:27:48,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 15:27:48,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 15:27:48,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 15:27:48,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 15:27:48,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 15:27:48,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 15:27:48,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 15:27:48,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 15:27:48,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 15:27:48,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 15:27:48,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 15:27:48,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 15:27:48,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:48,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 15:27:48,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 15:27:48,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 15:27:48,872 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-21 15:27:48,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-21 15:27:49,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 15:27:49,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 15:27:49,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 15:27:49,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 15:27:49,091 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 15:27:49,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_compareModified_ground.i [2023-12-21 15:27:50,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 15:27:50,207 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 15:27:50,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compareModified_ground.i [2023-12-21 15:27:50,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d426db9bd/dfb6de1e7d854d5790c18b6dd0618745/FLAGfbdd61266 [2023-12-21 15:27:50,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d426db9bd/dfb6de1e7d854d5790c18b6dd0618745 [2023-12-21 15:27:50,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 15:27:50,229 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 15:27:50,230 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:50,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 15:27:50,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 15:27:50,234 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c1fe79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50, skipping insertion in model container [2023-12-21 15:27:50,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 15:27:50,367 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compareModified_ground.i[824,837] [2023-12-21 15:27:50,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:50,394 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 15:27:50,406 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_compareModified_ground.i[824,837] [2023-12-21 15:27:50,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 15:27:50,423 INFO L206 MainTranslator]: Completed translation [2023-12-21 15:27:50,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50 WrapperNode [2023-12-21 15:27:50,423 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 15:27:50,424 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:50,424 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 15:27:50,424 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 15:27:50,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,466 INFO L138 Inliner]: procedures = 18, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2023-12-21 15:27:50,466 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 15:27:50,467 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 15:27:50,467 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 15:27:50,467 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 15:27:50,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,487 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,496 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 2, 3, 5]. 42 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-12-21 15:27:50,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,501 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 15:27:50,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 15:27:50,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 15:27:50,520 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 15:27:50,521 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (1/1) ... [2023-12-21 15:27:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 15:27:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 15:27:50,596 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) [2023-12-21 15:27:50,616 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 [2023-12-21 15:27:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 15:27:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-21 15:27:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-21 15:27:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-12-21 15:27:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 15:27:50,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 15:27:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 15:27:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 15:27:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-21 15:27:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-21 15:27:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-21 15:27:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-12-21 15:27:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-12-21 15:27:50,715 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 15:27:50,717 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 15:27:50,912 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 15:27:50,938 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 15:27:50,938 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-21 15:27:50,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:50 BoogieIcfgContainer [2023-12-21 15:27:50,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 15:27:50,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 15:27:50,941 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 15:27:50,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 15:27:50,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:27:50" (1/3) ... [2023-12-21 15:27:50,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37982b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:50, skipping insertion in model container [2023-12-21 15:27:50,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:27:50" (2/3) ... [2023-12-21 15:27:50,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37982b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:27:50, skipping insertion in model container [2023-12-21 15:27:50,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:27:50" (3/3) ... [2023-12-21 15:27:50,953 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2023-12-21 15:27:50,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 15:27:50,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 15:27:50,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 15:27:51,001 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;@1cdd9ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 15:27:51,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 15:27:51,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 15:27:51,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:51,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:51,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:51,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1330138201, now seen corresponding path program 1 times [2023-12-21 15:27:51,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:51,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26200519] [2023-12-21 15:27:51,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:51,022 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 [2023-12-21 15:27:51,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:51,024 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) [2023-12-21 15:27:51,028 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 [2023-12-21 15:27:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:51,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 15:27:51,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:51,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:51,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:51,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26200519] [2023-12-21 15:27:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26200519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:51,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:51,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:51,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594112176] [2023-12-21 15:27:51,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 15:27:51,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 15:27:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:51,156 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:51,193 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2023-12-21 15:27:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 15:27:51,195 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 15:27:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:51,201 INFO L225 Difference]: With dead ends: 44 [2023-12-21 15:27:51,201 INFO L226 Difference]: Without dead ends: 21 [2023-12-21 15:27:51,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 15:27:51,211 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:51,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-21 15:27:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-21 15:27:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-12-21 15:27:51,242 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 11 [2023-12-21 15:27:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:51,243 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-12-21 15:27:51,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-12-21 15:27:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-21 15:27:51,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:51,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:51,251 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 [2023-12-21 15:27:51,448 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 [2023-12-21 15:27:51,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:51,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:51,450 INFO L85 PathProgramCache]: Analyzing trace with hash 973784594, now seen corresponding path program 1 times [2023-12-21 15:27:51,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:51,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067013069] [2023-12-21 15:27:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:51,451 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 [2023-12-21 15:27:51,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:51,452 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) [2023-12-21 15:27:51,455 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 [2023-12-21 15:27:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:51,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:51,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:51,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:51,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:51,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067013069] [2023-12-21 15:27:51,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067013069] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:51,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:51,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:51,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494149335] [2023-12-21 15:27:51,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:51,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:51,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:51,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:51,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:51,525 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:51,555 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2023-12-21 15:27:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:51,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-21 15:27:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:51,557 INFO L225 Difference]: With dead ends: 41 [2023-12-21 15:27:51,557 INFO L226 Difference]: Without dead ends: 22 [2023-12-21 15:27:51,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:51,559 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:51,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:51,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-21 15:27:51,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-21 15:27:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-12-21 15:27:51,571 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 11 [2023-12-21 15:27:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:51,571 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-12-21 15:27:51,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-12-21 15:27:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-21 15:27:51,572 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:51,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:51,575 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 [2023-12-21 15:27:51,775 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 [2023-12-21 15:27:51,776 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:51,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:51,776 INFO L85 PathProgramCache]: Analyzing trace with hash -771809293, now seen corresponding path program 1 times [2023-12-21 15:27:51,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:51,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007934890] [2023-12-21 15:27:51,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:51,777 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 [2023-12-21 15:27:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:51,778 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) [2023-12-21 15:27:51,796 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 [2023-12-21 15:27:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:51,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-21 15:27:51,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:51,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 15:27:51,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:51,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007934890] [2023-12-21 15:27:51,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007934890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:51,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:51,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-12-21 15:27:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432640474] [2023-12-21 15:27:51,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:51,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 15:27:51,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 15:27:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-21 15:27:51,897 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:51,972 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2023-12-21 15:27:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 15:27:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-21 15:27:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:51,974 INFO L225 Difference]: With dead ends: 44 [2023-12-21 15:27:51,974 INFO L226 Difference]: Without dead ends: 25 [2023-12-21 15:27:51,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-21 15:27:51,976 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:51,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-21 15:27:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-21 15:27:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-12-21 15:27:51,983 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 12 [2023-12-21 15:27:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:51,984 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-12-21 15:27:51,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-12-21 15:27:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-21 15:27:51,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:51,985 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:51,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:52,190 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 [2023-12-21 15:27:52,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:52,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1052592558, now seen corresponding path program 2 times [2023-12-21 15:27:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458994317] [2023-12-21 15:27:52,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:52,191 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 [2023-12-21 15:27:52,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:52,192 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) [2023-12-21 15:27:52,194 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 [2023-12-21 15:27:52,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-21 15:27:52,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:52,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:52,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 15:27:52,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:52,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458994317] [2023-12-21 15:27:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458994317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:52,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:52,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 15:27:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678097545] [2023-12-21 15:27:52,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:52,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:52,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:52,273 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:52,308 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-12-21 15:27:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:52,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-21 15:27:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:52,310 INFO L225 Difference]: With dead ends: 43 [2023-12-21 15:27:52,310 INFO L226 Difference]: Without dead ends: 28 [2023-12-21 15:27:52,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:52,311 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:52,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 39 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-21 15:27:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-12-21 15:27:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-12-21 15:27:52,319 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2023-12-21 15:27:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:52,319 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-12-21 15:27:52,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-12-21 15:27:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 15:27:52,320 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:52,320 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:52,324 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 [2023-12-21 15:27:52,522 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 [2023-12-21 15:27:52,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:52,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:52,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1993274467, now seen corresponding path program 1 times [2023-12-21 15:27:52,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:52,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668348347] [2023-12-21 15:27:52,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:52,523 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 [2023-12-21 15:27:52,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:52,525 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) [2023-12-21 15:27:52,525 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 [2023-12-21 15:27:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:52,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 15:27:52,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:52,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:52,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668348347] [2023-12-21 15:27:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668348347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:52,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-12-21 15:27:52,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329369952] [2023-12-21 15:27:52,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:52,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 15:27:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 15:27:52,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-21 15:27:52,753 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:52,950 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2023-12-21 15:27:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 15:27:52,961 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-21 15:27:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:52,961 INFO L225 Difference]: With dead ends: 52 [2023-12-21 15:27:52,961 INFO L226 Difference]: Without dead ends: 32 [2023-12-21 15:27:52,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2023-12-21 15:27:52,962 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:52,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 15:27:52,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-21 15:27:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-21 15:27:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-12-21 15:27:52,967 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2023-12-21 15:27:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:52,967 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-12-21 15:27:52,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-12-21 15:27:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 15:27:52,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:52,967 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:52,977 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 [2023-12-21 15:27:53,177 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 [2023-12-21 15:27:53,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:53,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1805659139, now seen corresponding path program 2 times [2023-12-21 15:27:53,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:53,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297372311] [2023-12-21 15:27:53,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:27:53,178 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 [2023-12-21 15:27:53,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:53,179 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) [2023-12-21 15:27:53,180 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 [2023-12-21 15:27:53,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:27:53,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:53,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 15:27:53,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:53,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:53,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:53,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297372311] [2023-12-21 15:27:53,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297372311] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:53,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:53,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-12-21 15:27:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596496736] [2023-12-21 15:27:53,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:53,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-21 15:27:53,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-21 15:27:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-12-21 15:27:53,658 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:54,608 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2023-12-21 15:27:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 15:27:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-21 15:27:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:54,609 INFO L225 Difference]: With dead ends: 64 [2023-12-21 15:27:54,609 INFO L226 Difference]: Without dead ends: 44 [2023-12-21 15:27:54,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 15:27:54,610 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:54,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 15:27:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-21 15:27:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-21 15:27:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-12-21 15:27:54,615 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 24 [2023-12-21 15:27:54,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:54,615 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-12-21 15:27:54,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:54,616 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-12-21 15:27:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 15:27:54,616 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:54,616 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-21 15:27:54,819 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 [2023-12-21 15:27:54,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:54,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1041501373, now seen corresponding path program 3 times [2023-12-21 15:27:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458949570] [2023-12-21 15:27:54,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:27:54,820 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 [2023-12-21 15:27:54,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:54,821 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) [2023-12-21 15:27:54,829 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 [2023-12-21 15:27:54,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:27:54,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:27:54,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-21 15:27:54,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-12-21 15:27:54,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 15:27:54,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458949570] [2023-12-21 15:27:54,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458949570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 15:27:54,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 15:27:54,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 15:27:54,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655512172] [2023-12-21 15:27:54,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 15:27:54,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 15:27:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 15:27:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:54,916 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:54,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:27:54,948 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2023-12-21 15:27:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 15:27:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 15:27:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:27:54,951 INFO L225 Difference]: With dead ends: 66 [2023-12-21 15:27:54,951 INFO L226 Difference]: Without dead ends: 53 [2023-12-21 15:27:54,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 15:27:54,952 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 15:27:54,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 15:27:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-21 15:27:54,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2023-12-21 15:27:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:27:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-12-21 15:27:54,963 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 36 [2023-12-21 15:27:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:27:54,964 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-12-21 15:27:54,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:27:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-12-21 15:27:54,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-21 15:27:54,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:27:54,964 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:27:54,977 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 [2023-12-21 15:27:55,168 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 [2023-12-21 15:27:55,171 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:27:55,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:27:55,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1434528383, now seen corresponding path program 1 times [2023-12-21 15:27:55,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:27:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723726844] [2023-12-21 15:27:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:27:55,172 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 [2023-12-21 15:27:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:27:55,173 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) [2023-12-21 15:27:55,174 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 [2023-12-21 15:27:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:27:55,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 15:27:55,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:27:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:55,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:27:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:27:56,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:27:56,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723726844] [2023-12-21 15:27:56,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723726844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:27:56,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:27:56,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-21 15:27:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579999818] [2023-12-21 15:27:56,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:27:56,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 15:27:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:27:56,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 15:27:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 15:27:56,738 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 47 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:02,668 INFO L93 Difference]: Finished difference Result 98 states and 137 transitions. [2023-12-21 15:28:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 15:28:02,669 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 47 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-21 15:28:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:02,669 INFO L225 Difference]: With dead ends: 98 [2023-12-21 15:28:02,669 INFO L226 Difference]: Without dead ends: 73 [2023-12-21 15:28:02,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 15:28:02,671 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:02,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 506 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 15:28:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-21 15:28:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-12-21 15:28:02,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 69 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:28:02,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2023-12-21 15:28:02,677 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 36 [2023-12-21 15:28:02,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:02,678 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2023-12-21 15:28:02,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 47 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2023-12-21 15:28:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 15:28:02,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:02,689 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:02,699 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 [2023-12-21 15:28:02,890 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 [2023-12-21 15:28:02,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:02,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:02,891 INFO L85 PathProgramCache]: Analyzing trace with hash -531381247, now seen corresponding path program 2 times [2023-12-21 15:28:02,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:02,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036734863] [2023-12-21 15:28:02,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:28:02,891 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 [2023-12-21 15:28:02,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:02,892 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) [2023-12-21 15:28:02,894 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 [2023-12-21 15:28:03,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:28:03,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:28:03,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-21 15:28:03,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:28:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:28:04,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:28:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:28:08,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:28:08,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036734863] [2023-12-21 15:28:08,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036734863] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:28:08,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:28:08,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 95 [2023-12-21 15:28:08,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183804150] [2023-12-21 15:28:08,778 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:28:08,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-12-21 15:28:08,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:28:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-12-21 15:28:08,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2023-12-21 15:28:08,781 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 95 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:55,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:55,573 INFO L93 Difference]: Finished difference Result 146 states and 209 transitions. [2023-12-21 15:28:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-12-21 15:28:55,573 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 95 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-21 15:28:55,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:55,574 INFO L225 Difference]: With dead ends: 146 [2023-12-21 15:28:55,574 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 15:28:55,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 48.9s TimeCoverageRelationStatistics Valid=6814, Invalid=13208, Unknown=0, NotChecked=0, Total=20022 [2023-12-21 15:28:55,578 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2498 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 2499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:55,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1031 Invalid, 2499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2498 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 15:28:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 15:28:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-21 15:28:55,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.0683760683760684) internal successors, (125), 117 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 15:28:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 129 transitions. [2023-12-21 15:28:55,588 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 129 transitions. Word has length 60 [2023-12-21 15:28:55,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:55,588 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 129 transitions. [2023-12-21 15:28:55,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.1145833333333333) internal successors, (107), 95 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 129 transitions. [2023-12-21 15:28:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-21 15:28:55,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:55,589 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:55,599 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 [2023-12-21 15:28:55,792 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 [2023-12-21 15:28:55,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:55,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1236476161, now seen corresponding path program 3 times [2023-12-21 15:28:55,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:55,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140763540] [2023-12-21 15:28:55,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 15:28:55,794 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 [2023-12-21 15:28:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:55,795 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) [2023-12-21 15:28:55,796 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 [2023-12-21 15:28:55,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-21 15:28:55,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:28:55,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-21 15:28:55,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:28:56,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-12-21 15:28:56,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-21 15:28:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:28:56,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:28:56,922 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-12-21 15:28:56,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2023-12-21 15:28:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4465 trivial. 0 not checked. [2023-12-21 15:28:57,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:28:57,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140763540] [2023-12-21 15:28:57,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140763540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:28:57,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:28:57,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-12-21 15:28:57,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801508251] [2023-12-21 15:28:57,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:28:57,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 15:28:57,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:28:57,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 15:28:57,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-21 15:28:57,078 INFO L87 Difference]: Start difference. First operand 121 states and 129 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:28:57,331 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2023-12-21 15:28:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 15:28:57,331 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-12-21 15:28:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:28:57,332 INFO L225 Difference]: With dead ends: 153 [2023-12-21 15:28:57,332 INFO L226 Difference]: Without dead ends: 143 [2023-12-21 15:28:57,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-12-21 15:28:57,333 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:28:57,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 15:28:57,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-12-21 15:28:57,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 127. [2023-12-21 15:28:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 121 states have (on average 1.0661157024793388) internal successors, (129), 122 states have internal predecessors, (129), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 15:28:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2023-12-21 15:28:57,347 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 108 [2023-12-21 15:28:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:28:57,347 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2023-12-21 15:28:57,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 12 states have internal predecessors, (27), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:28:57,348 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2023-12-21 15:28:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-12-21 15:28:57,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:28:57,348 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:28:57,352 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 [2023-12-21 15:28:57,551 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 [2023-12-21 15:28:57,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:28:57,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:28:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1471715537, now seen corresponding path program 1 times [2023-12-21 15:28:57,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:28:57,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146721922] [2023-12-21 15:28:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 15:28:57,552 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 [2023-12-21 15:28:57,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:28:57,553 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) [2023-12-21 15:28:57,555 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 [2023-12-21 15:28:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 15:28:58,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 96 conjunts are in the unsatisfiable core [2023-12-21 15:28:58,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:29:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:29:01,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:29:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:29:20,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:29:20,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146721922] [2023-12-21 15:29:20,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146721922] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:29:20,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:29:20,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 191 [2023-12-21 15:29:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815086907] [2023-12-21 15:29:20,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:29:20,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-12-21 15:29:20,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:29:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-12-21 15:29:20,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9406, Invalid=27266, Unknown=0, NotChecked=0, Total=36672 [2023-12-21 15:29:20,032 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:37:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 15:37:25,236 INFO L93 Difference]: Finished difference Result 254 states and 365 transitions. [2023-12-21 15:37:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-12-21 15:37:25,237 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-12-21 15:37:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 15:37:25,239 INFO L225 Difference]: With dead ends: 254 [2023-12-21 15:37:25,239 INFO L226 Difference]: Without dead ends: 223 [2023-12-21 15:37:25,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 493.8s TimeCoverageRelationStatistics Valid=27454, Invalid=54056, Unknown=0, NotChecked=0, Total=81510 [2023-12-21 15:37:25,245 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 9606 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 9607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-12-21 15:37:25,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2060 Invalid, 9607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9606 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2023-12-21 15:37:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-12-21 15:37:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2023-12-21 15:37:25,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 217 states have (on average 1.0368663594470047) internal successors, (225), 218 states have internal predecessors, (225), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-21 15:37:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 231 transitions. [2023-12-21 15:37:25,281 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 231 transitions. Word has length 109 [2023-12-21 15:37:25,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 15:37:25,282 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 231 transitions. [2023-12-21 15:37:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0625) internal successors, (204), 191 states have internal predecessors, (204), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:37:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 231 transitions. [2023-12-21 15:37:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-21 15:37:25,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 15:37:25,288 INFO L195 NwaCegarLoop]: trace histogram [190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 15:37:25,315 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 [2023-12-21 15:37:25,510 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 [2023-12-21 15:37:25,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 15:37:25,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 15:37:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2059083473, now seen corresponding path program 2 times [2023-12-21 15:37:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-21 15:37:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877725479] [2023-12-21 15:37:25,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 15:37:25,512 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 [2023-12-21 15:37:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-21 15:37:25,513 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) [2023-12-21 15:37:25,513 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 [2023-12-21 15:37:26,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 15:37:26,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 15:37:26,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 192 conjunts are in the unsatisfiable core [2023-12-21 15:37:26,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 15:37:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 18146 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:37:39,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 15:39:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 18146 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 15:39:00,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-21 15:39:00,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877725479] [2023-12-21 15:39:00,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877725479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 15:39:00,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 15:39:00,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 383 [2023-12-21 15:39:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795900946] [2023-12-21 15:39:00,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 15:39:00,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-12-21 15:39:00,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-21 15:39:00,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-12-21 15:39:00,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37246, Invalid=109826, Unknown=0, NotChecked=0, Total=147072 [2023-12-21 15:39:00,731 INFO L87 Difference]: Start difference. First operand 223 states and 231 transitions. Second operand has 384 states, 384 states have (on average 1.03125) internal successors, (396), 383 states have internal predecessors, (396), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 15:40:14,972 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 574 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:40:41,323 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 571 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:41:09,364 WARN L293 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 568 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:41:35,637 WARN L293 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 565 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-21 15:42:03,578 WARN L293 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 562 DAG size of output: 7 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-21 15:42:19,092 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 [2023-12-21 15:42:19,117 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 [2023-12-21 15:42:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-12-21 15:42:19,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 225.6s TimeCoverageRelationStatistics Valid=39166, Invalid=111766, Unknown=0, NotChecked=0, Total=150932 [2023-12-21 15:42:19,137 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.9s IncrementalHoareTripleChecker+Time [2023-12-21 15:42:19,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 36679 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 36678 Invalid, 0 Unknown, 0 Unchecked, 47.9s Time] [2023-12-21 15:42:19,138 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 15:42:19,163 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 [2023-12-21 15:42:19,339 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 [2023-12-21 15:42:19,339 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (223states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 389 known predicates. [2023-12-21 15:42:19,342 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1] [2023-12-21 15:42:19,344 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 15:42:19,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 03:42:19 BoogieIcfgContainer [2023-12-21 15:42:19,346 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 15:42:19,346 INFO L158 Benchmark]: Toolchain (without parser) took 869117.29ms. Allocated memory is still 331.4MB. Free memory was 279.4MB in the beginning and 181.4MB in the end (delta: 98.0MB). Peak memory consumption was 226.7MB. Max. memory is 8.0GB. [2023-12-21 15:42:19,346 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 190.8MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 15:42:19,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.33ms. Allocated memory is still 331.4MB. Free memory was 279.4MB in the beginning and 267.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 15:42:19,346 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.16ms. Allocated memory is still 331.4MB. Free memory was 267.9MB in the beginning and 265.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:42:19,346 INFO L158 Benchmark]: Boogie Preprocessor took 52.47ms. Allocated memory is still 331.4MB. Free memory was 265.8MB in the beginning and 263.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 15:42:19,347 INFO L158 Benchmark]: RCFGBuilder took 419.17ms. Allocated memory is still 331.4MB. Free memory was 263.7MB in the beginning and 246.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-21 15:42:19,347 INFO L158 Benchmark]: TraceAbstraction took 868404.95ms. Allocated memory is still 331.4MB. Free memory was 246.4MB in the beginning and 181.4MB in the end (delta: 65.0MB). Peak memory consumption was 194.2MB. Max. memory is 8.0GB. [2023-12-21 15:42:19,350 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 190.8MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 193.33ms. Allocated memory is still 331.4MB. Free memory was 279.4MB in the beginning and 267.9MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.16ms. Allocated memory is still 331.4MB. Free memory was 267.9MB in the beginning and 265.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.47ms. Allocated memory is still 331.4MB. Free memory was 265.8MB in the beginning and 263.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 419.17ms. Allocated memory is still 331.4MB. Free memory was 263.7MB in the beginning and 246.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 868404.95ms. Allocated memory is still 331.4MB. Free memory was 246.4MB in the beginning and 181.4MB in the end (delta: 65.0MB). Peak memory consumption was 194.2MB. 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: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was constructing difference of abstraction (223states) and FLOYD_HOARE automaton (currently 198 states, 384 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 389 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 868.4s, OverallIterations: 12, TraceHistogramMax: 190, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 738.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 64.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 4419 SdHoareTripleChecker+Invalid, 55.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4166 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49915 IncrementalHoareTripleChecker+Invalid, 49934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 253 mSDtfsCounter, 49915 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1384 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 950 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5729 ImplicationChecksByTransitivity, 776.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=223occurred in iteration=11, InterpolantAutomatonStates: 400, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 125.1s InterpolantComputationTime, 645 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 1197 ConstructedInterpolants, 0 QuantifiedInterpolants, 4907 SizeOfPredicates, 14 NumberOfNonLiveVariables, 3613 ConjunctsInSsa, 401 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 9206/57228 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