/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/nla-digbench-scaling/egcd3-ll_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:52:08,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:52:08,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:52:08,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:52:08,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:52:08,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:52:08,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:52:08,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:52:08,602 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:52:08,605 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:52:08,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:52:08,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:52:08,606 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:52:08,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:52:08,607 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:52:08,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:52:08,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:52:08,608 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:52:08,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:52:08,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:52:08,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:52:08,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:52:08,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:52:08,609 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:52:08,609 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:52:08,609 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:52:08,610 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:52:08,610 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:52:08,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:52:08,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:52:08,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:52:08,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:52:08,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:52:08,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:52:08,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:52:08,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:52:08,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:52:08,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:52:08,613 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:52:08,613 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:52:08,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:52:08,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:52:08,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:52:08,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:52:08,782 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:52:08,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound50.c [2023-12-16 16:52:09,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:52:09,913 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:52:09,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound50.c [2023-12-16 16:52:09,918 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59168280/5bba0341234349bfb64ac40efbcf8b34/FLAGc3a9393f5 [2023-12-16 16:52:09,930 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59168280/5bba0341234349bfb64ac40efbcf8b34 [2023-12-16 16:52:09,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:52:09,932 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:52:09,933 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:52:09,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:52:09,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:52:09,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:52:09" (1/1) ... [2023-12-16 16:52:09,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de87181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:09, skipping insertion in model container [2023-12-16 16:52:09,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:52:09" (1/1) ... [2023-12-16 16:52:09,952 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:52:10,045 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound50.c[490,503] [2023-12-16 16:52:10,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:52:10,066 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:52:10,074 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_unwindbound50.c[490,503] [2023-12-16 16:52:10,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:52:10,090 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:52:10,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10 WrapperNode [2023-12-16 16:52:10,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:52:10,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:52:10,092 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:52:10,092 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:52:10,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,117 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 92 [2023-12-16 16:52:10,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:52:10,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:52:10,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:52:10,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:52:10,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,135 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 16:52:10,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:52:10,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:52:10,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:52:10,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:52:10,149 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (1/1) ... [2023-12-16 16:52:10,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:52:10,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:52:10,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 16:52:10,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 16:52:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:52:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:52:10,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 16:52:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 16:52:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:52:10,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:52:10,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 16:52:10,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 16:52:10,267 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:52:10,269 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:52:10,535 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:52:10,552 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:52:10,552 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 16:52:10,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:52:10 BoogieIcfgContainer [2023-12-16 16:52:10,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:52:10,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:52:10,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:52:10,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:52:10,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:52:09" (1/3) ... [2023-12-16 16:52:10,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac659c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:52:10, skipping insertion in model container [2023-12-16 16:52:10,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:52:10" (2/3) ... [2023-12-16 16:52:10,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ac659c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:52:10, skipping insertion in model container [2023-12-16 16:52:10,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:52:10" (3/3) ... [2023-12-16 16:52:10,558 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound50.c [2023-12-16 16:52:10,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:52:10,573 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:52:10,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:52:10,609 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;@38b5e89c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:52:10,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:52:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-16 16:52:10,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-16 16:52:10,617 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:10,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:10,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:10,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -832436526, now seen corresponding path program 1 times [2023-12-16 16:52:10,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:10,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549092764] [2023-12-16 16:52:10,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:10,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:10,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:10,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:10,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:52:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:10,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:52:10,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 16:52:10,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:10,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:10,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549092764] [2023-12-16 16:52:10,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549092764] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:10,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:10,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:52:10,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344558020] [2023-12-16 16:52:10,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:10,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:52:10,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:52:10,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:52:10,803 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:10,824 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2023-12-16 16:52:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:52:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-12-16 16:52:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:10,831 INFO L225 Difference]: With dead ends: 62 [2023-12-16 16:52:10,831 INFO L226 Difference]: Without dead ends: 30 [2023-12-16 16:52:10,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:52:10,835 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:10,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:52:10,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-16 16:52:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-16 16:52:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 16:52:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2023-12-16 16:52:10,863 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 17 [2023-12-16 16:52:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:10,863 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2023-12-16 16:52:10,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2023-12-16 16:52:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 16:52:10,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:10,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:10,871 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-16 16:52:11,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:11,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:11,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:11,069 INFO L85 PathProgramCache]: Analyzing trace with hash 958862887, now seen corresponding path program 1 times [2023-12-16 16:52:11,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:11,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085951585] [2023-12-16 16:52:11,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:11,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:11,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:11,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:52:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:11,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 16:52:11,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:11,300 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:11,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:11,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085951585] [2023-12-16 16:52:11,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085951585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:11,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:11,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:52:11,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32690453] [2023-12-16 16:52:11,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:11,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 16:52:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:11,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 16:52:11,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:52:11,310 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:11,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:11,352 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-12-16 16:52:11,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 16:52:11,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-12-16 16:52:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:11,355 INFO L225 Difference]: With dead ends: 39 [2023-12-16 16:52:11,355 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 16:52:11,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 16:52:11,357 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 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 [2023-12-16 16:52:11,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:52:11,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 16:52:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-16 16:52:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 16:52:11,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-12-16 16:52:11,371 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 18 [2023-12-16 16:52:11,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:11,372 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-12-16 16:52:11,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:11,373 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-12-16 16:52:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 16:52:11,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:11,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:11,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:11,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:11,583 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:11,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash -359656705, now seen corresponding path program 1 times [2023-12-16 16:52:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658999729] [2023-12-16 16:52:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:11,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:11,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:52:11,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:11,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:52:11,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:52:11,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:11,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:11,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658999729] [2023-12-16 16:52:11,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658999729] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:11,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:11,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 16:52:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242206056] [2023-12-16 16:52:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:52:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:52:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:52:11,850 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:12,436 INFO L93 Difference]: Finished difference Result 52 states and 70 transitions. [2023-12-16 16:52:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:52:12,442 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-12-16 16:52:12,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:12,443 INFO L225 Difference]: With dead ends: 52 [2023-12-16 16:52:12,443 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 16:52:12,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 16:52:12,444 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 47 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:12,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 129 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 16:52:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 16:52:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2023-12-16 16:52:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 16:52:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2023-12-16 16:52:12,451 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 19 [2023-12-16 16:52:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:12,451 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2023-12-16 16:52:12,451 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2023-12-16 16:52:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 16:52:12,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:12,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:12,460 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 [2023-12-16 16:52:12,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:12,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:12,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1735129581, now seen corresponding path program 1 times [2023-12-16 16:52:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828667216] [2023-12-16 16:52:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:12,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:12,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:12,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:12,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:52:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:12,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 16:52:12,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:12,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:12,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:12,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828667216] [2023-12-16 16:52:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828667216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:12,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:12,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 16:52:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360678442] [2023-12-16 16:52:12,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:12,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:52:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:52:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:52:12,898 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:12,954 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2023-12-16 16:52:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:52:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-12-16 16:52:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:12,956 INFO L225 Difference]: With dead ends: 57 [2023-12-16 16:52:12,956 INFO L226 Difference]: Without dead ends: 35 [2023-12-16 16:52:12,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:52:12,957 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:12,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:52:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-12-16 16:52:12,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-12-16 16:52:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-16 16:52:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2023-12-16 16:52:12,963 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 24 [2023-12-16 16:52:12,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:12,963 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2023-12-16 16:52:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:52:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2023-12-16 16:52:12,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 16:52:12,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:12,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:12,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:13,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:13,172 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:13,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:13,173 INFO L85 PathProgramCache]: Analyzing trace with hash 150917056, now seen corresponding path program 1 times [2023-12-16 16:52:13,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:13,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669846573] [2023-12-16 16:52:13,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:13,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:13,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:13,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:13,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:52:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:13,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:52:13,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:13,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:13,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:13,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669846573] [2023-12-16 16:52:13,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669846573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:13,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:13,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 16:52:13,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003544258] [2023-12-16 16:52:13,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 16:52:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 16:52:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 16:52:13,641 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:52:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:15,661 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2023-12-16 16:52:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:52:15,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-12-16 16:52:15,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:15,670 INFO L225 Difference]: With dead ends: 53 [2023-12-16 16:52:15,670 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 16:52:15,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 16:52:15,671 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 37 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:15,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 176 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 16:52:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 16:52:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-12-16 16:52:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 36 states have internal predecessors, (46), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 16:52:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2023-12-16 16:52:15,679 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 24 [2023-12-16 16:52:15,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:15,679 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2023-12-16 16:52:15,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 16:52:15,679 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2023-12-16 16:52:15,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-16 16:52:15,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:15,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:15,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-16 16:52:15,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:15,884 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:15,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1833090586, now seen corresponding path program 1 times [2023-12-16 16:52:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507759677] [2023-12-16 16:52:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:15,886 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:15,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:52:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:16,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:52:16,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:16,168 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:16,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:16,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507759677] [2023-12-16 16:52:16,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507759677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:52:16,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:52:16,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-12-16 16:52:16,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618280252] [2023-12-16 16:52:16,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:52:16,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:52:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:16,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:52:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:52:16,332 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:52:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:22,245 INFO L93 Difference]: Finished difference Result 146 states and 192 transitions. [2023-12-16 16:52:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 16:52:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-12-16 16:52:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:22,254 INFO L225 Difference]: With dead ends: 146 [2023-12-16 16:52:22,254 INFO L226 Difference]: Without dead ends: 139 [2023-12-16 16:52:22,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-12-16 16:52:22,255 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 80 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:22,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 236 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-16 16:52:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-16 16:52:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 96. [2023-12-16 16:52:22,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.338235294117647) internal successors, (91), 70 states have internal predecessors, (91), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 16:52:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2023-12-16 16:52:22,273 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 129 transitions. Word has length 25 [2023-12-16 16:52:22,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:22,273 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 129 transitions. [2023-12-16 16:52:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:52:22,274 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 129 transitions. [2023-12-16 16:52:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 16:52:22,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:22,274 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:22,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:22,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:22,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:22,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1010868448, now seen corresponding path program 1 times [2023-12-16 16:52:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:22,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836404715] [2023-12-16 16:52:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:22,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:22,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:22,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:22,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 16:52:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:22,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:52:22,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:52:22,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 16:52:23,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:23,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836404715] [2023-12-16 16:52:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836404715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:52:23,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:52:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-12-16 16:52:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555454446] [2023-12-16 16:52:23,319 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:52:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 16:52:23,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:23,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 16:52:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-16 16:52:23,320 INFO L87 Difference]: Start difference. First operand 96 states and 129 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 16:52:28,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 16:52:28,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:28,763 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2023-12-16 16:52:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:52:28,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 26 [2023-12-16 16:52:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:28,772 INFO L225 Difference]: With dead ends: 186 [2023-12-16 16:52:28,772 INFO L226 Difference]: Without dead ends: 174 [2023-12-16 16:52:28,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-12-16 16:52:28,773 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 331 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:28,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 274 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-16 16:52:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-16 16:52:28,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 105. [2023-12-16 16:52:28,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 78 states have (on average 1.3205128205128205) internal successors, (103), 79 states have internal predecessors, (103), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 16:52:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2023-12-16 16:52:28,800 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 26 [2023-12-16 16:52:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:28,801 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2023-12-16 16:52:28,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 11 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 16:52:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2023-12-16 16:52:28,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-16 16:52:28,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:28,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:28,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:29,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:29,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:29,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:29,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2130442992, now seen corresponding path program 1 times [2023-12-16 16:52:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:29,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395074586] [2023-12-16 16:52:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:29,022 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 [2023-12-16 16:52:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:29,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:29,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-16 16:52:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:29,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 16:52:29,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:29,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:29,578 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:52:29,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:29,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395074586] [2023-12-16 16:52:29,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395074586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:52:29,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:52:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-16 16:52:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763745815] [2023-12-16 16:52:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:52:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 16:52:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 16:52:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-16 16:52:29,579 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 16:52:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:52:31,462 INFO L93 Difference]: Finished difference Result 120 states and 154 transitions. [2023-12-16 16:52:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 16:52:31,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-12-16 16:52:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:52:31,471 INFO L225 Difference]: With dead ends: 120 [2023-12-16 16:52:31,471 INFO L226 Difference]: Without dead ends: 118 [2023-12-16 16:52:31,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-16 16:52:31,472 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 37 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 16:52:31,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 178 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 16:52:31,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-16 16:52:31,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2023-12-16 16:52:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 16:52:31,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 149 transitions. [2023-12-16 16:52:31,486 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 149 transitions. Word has length 29 [2023-12-16 16:52:31,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:52:31,487 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 149 transitions. [2023-12-16 16:52:31,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 16:52:31,487 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 149 transitions. [2023-12-16 16:52:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 16:52:31,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:52:31,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:52:31,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-16 16:52:31,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:31,695 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:52:31,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:52:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2110713919, now seen corresponding path program 1 times [2023-12-16 16:52:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:52:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946073846] [2023-12-16 16:52:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:52:31,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:52:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:52:31,697 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:52:31,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-16 16:52:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:52:31,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 16:52:31,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:52:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:32,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 16:52:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:52:46,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:52:46,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946073846] [2023-12-16 16:52:46,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946073846] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 16:52:46,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 16:52:46,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2023-12-16 16:52:46,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161814677] [2023-12-16 16:52:46,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 16:52:46,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 16:52:46,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:52:46,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 16:52:46,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:52:46,797 INFO L87 Difference]: Start difference. First operand 117 states and 149 transitions. Second operand has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:52:56,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-16 16:53:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:53:07,650 INFO L93 Difference]: Finished difference Result 144 states and 187 transitions. [2023-12-16 16:53:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 16:53:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2023-12-16 16:53:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:53:07,675 INFO L225 Difference]: With dead ends: 144 [2023-12-16 16:53:07,675 INFO L226 Difference]: Without dead ends: 142 [2023-12-16 16:53:07,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-12-16 16:53:07,676 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 68 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2023-12-16 16:53:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 364 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 170 Invalid, 1 Unknown, 0 Unchecked, 16.6s Time] [2023-12-16 16:53:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-16 16:53:07,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2023-12-16 16:53:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.3173076923076923) internal successors, (137), 105 states have internal predecessors, (137), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 16:53:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 182 transitions. [2023-12-16 16:53:07,707 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 182 transitions. Word has length 31 [2023-12-16 16:53:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:53:07,707 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 182 transitions. [2023-12-16 16:53:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-16 16:53:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 182 transitions. [2023-12-16 16:53:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 16:53:07,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:53:07,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:53:07,716 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 (10)] Forceful destruction successful, exit code 0 [2023-12-16 16:53:07,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:07,917 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:53:07,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:53:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash -363027956, now seen corresponding path program 1 times [2023-12-16 16:53:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:53:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794622727] [2023-12-16 16:53:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:53:07,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:07,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:53:07,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:53:07,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-16 16:53:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:53:08,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-16 16:53:08,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:53:08,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:53:08,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:53:08,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:53:08,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794622727] [2023-12-16 16:53:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794622727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:53:08,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:53:08,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:53:08,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722180276] [2023-12-16 16:53:08,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:53:08,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 16:53:08,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:53:08,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 16:53:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:53:08,236 INFO L87 Difference]: Start difference. First operand 139 states and 182 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:53:08,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:53:08,361 INFO L93 Difference]: Finished difference Result 216 states and 290 transitions. [2023-12-16 16:53:08,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 16:53:08,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-12-16 16:53:08,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:53:08,362 INFO L225 Difference]: With dead ends: 216 [2023-12-16 16:53:08,362 INFO L226 Difference]: Without dead ends: 139 [2023-12-16 16:53:08,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 16:53:08,363 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:53:08,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 158 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:53:08,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-16 16:53:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-12-16 16:53:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 105 states have internal predecessors, (136), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 16:53:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2023-12-16 16:53:08,380 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 31 [2023-12-16 16:53:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:53:08,380 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2023-12-16 16:53:08,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-16 16:53:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2023-12-16 16:53:08,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 16:53:08,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:53:08,381 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:53:08,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-16 16:53:08,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:08,589 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:53:08,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:53:08,589 INFO L85 PathProgramCache]: Analyzing trace with hash -242784896, now seen corresponding path program 1 times [2023-12-16 16:53:08,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:53:08,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311101367] [2023-12-16 16:53:08,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:53:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:53:08,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:53:08,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-16 16:53:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:53:08,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-16 16:53:08,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:53:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-16 16:53:09,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:53:09,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:53:09,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311101367] [2023-12-16 16:53:09,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311101367] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:53:09,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:53:09,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 16:53:09,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130137990] [2023-12-16 16:53:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:53:09,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 16:53:09,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:53:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 16:53:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-16 16:53:09,498 INFO L87 Difference]: Start difference. First operand 139 states and 181 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 16:53:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:53:12,134 INFO L93 Difference]: Finished difference Result 208 states and 286 transitions. [2023-12-16 16:53:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 16:53:12,139 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2023-12-16 16:53:12,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:53:12,140 INFO L225 Difference]: With dead ends: 208 [2023-12-16 16:53:12,140 INFO L226 Difference]: Without dead ends: 206 [2023-12-16 16:53:12,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-16 16:53:12,141 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 122 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 16:53:12,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 176 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 16:53:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-12-16 16:53:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 179. [2023-12-16 16:53:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 129 states have (on average 1.317829457364341) internal successors, (170), 130 states have internal predecessors, (170), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-16 16:53:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2023-12-16 16:53:12,165 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 34 [2023-12-16 16:53:12,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:53:12,165 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2023-12-16 16:53:12,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-16 16:53:12,165 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2023-12-16 16:53:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-16 16:53:12,166 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:53:12,166 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:53:12,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-16 16:53:12,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:12,368 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:53:12,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:53:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash -568879, now seen corresponding path program 1 times [2023-12-16 16:53:12,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:53:12,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796431128] [2023-12-16 16:53:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:53:12,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:53:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:53:12,370 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:53:12,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-16 16:53:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:53:12,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 16:53:12,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:53:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 16:53:13,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 16:53:28,590 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:53:28,592 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 16:53:29,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-16 16:53:29,696 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:53:29,696 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 37 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while executing Executor. [2023-12-16 16:53:29,707 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:53:29,708 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:53:29,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:53:29 BoogieIcfgContainer [2023-12-16 16:53:29,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:53:29,710 INFO L158 Benchmark]: Toolchain (without parser) took 79777.93ms. Allocated memory was 207.6MB in the beginning and 253.8MB in the end (delta: 46.1MB). Free memory was 165.6MB in the beginning and 80.5MB in the end (delta: 85.1MB). Peak memory consumption was 132.0MB. Max. memory is 8.0GB. [2023-12-16 16:53:29,710 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:53:29,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.45ms. Allocated memory is still 207.6MB. Free memory was 165.3MB in the beginning and 153.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 16:53:29,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.21ms. Allocated memory is still 207.6MB. Free memory was 153.3MB in the beginning and 151.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 16:53:29,711 INFO L158 Benchmark]: Boogie Preprocessor took 29.77ms. Allocated memory is still 207.6MB. Free memory was 151.7MB in the beginning and 149.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:53:29,711 INFO L158 Benchmark]: RCFGBuilder took 403.99ms. Allocated memory is still 207.6MB. Free memory was 149.6MB in the beginning and 135.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 16:53:29,711 INFO L158 Benchmark]: TraceAbstraction took 79156.04ms. Allocated memory was 207.6MB in the beginning and 253.8MB in the end (delta: 46.1MB). Free memory was 134.9MB in the beginning and 80.5MB in the end (delta: 54.4MB). Peak memory consumption was 101.6MB. Max. memory is 8.0GB. [2023-12-16 16:53:29,712 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 157.45ms. Allocated memory is still 207.6MB. Free memory was 165.3MB in the beginning and 153.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.21ms. Allocated memory is still 207.6MB. Free memory was 153.3MB in the beginning and 151.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.77ms. Allocated memory is still 207.6MB. Free memory was 151.7MB in the beginning and 149.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 403.99ms. Allocated memory is still 207.6MB. Free memory was 149.6MB in the beginning and 135.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 79156.04ms. Allocated memory was 207.6MB in the beginning and 253.8MB in the end (delta: 46.1MB). Free memory was 134.9MB in the beginning and 80.5MB in the end (delta: 54.4MB). Peak memory consumption was 101.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 13). Cancelled while NwaCegarLoop was analyzing trace of length 37 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 79.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 39.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 755 SdHoareTripleChecker+Valid, 34.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 724 mSDsluCounter, 1960 SdHoareTripleChecker+Invalid, 31.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1553 mSDsCounter, 217 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 777 IncrementalHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 217 mSolverCounterUnsat, 407 mSDtfsCounter, 777 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=11, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 156 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 346 ConstructedInterpolants, 24 QuantifiedInterpolants, 1781 SizeOfPredicates, 27 NumberOfNonLiveVariables, 621 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 67/95 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