/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/freire1_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 02:33:17,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 02:33:17,882 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 02:33:17,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 02:33:17,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 02:33:17,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 02:33:17,911 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 02:33:17,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 02:33:17,912 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 02:33:17,915 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 02:33:17,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 02:33:17,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 02:33:17,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 02:33:17,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 02:33:17,917 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 02:33:17,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 02:33:17,917 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 02:33:17,917 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 02:33:17,918 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 02:33:17,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 02:33:17,919 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 02:33:17,919 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 02:33:17,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 02:33:17,919 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 02:33:17,919 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 02:33:17,920 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 02:33:17,920 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 02:33:17,920 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 02:33:17,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 02:33:17,920 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 02:33:17,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 02:33:17,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 02:33:17,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 02:33:17,921 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 02:33:17,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 02:33:17,921 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 02:33:17,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 02:33:17,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 02:33:17,923 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 02:33:17,923 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 02:33:17,923 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 02:33:18,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 02:33:18,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 02:33:18,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 02:33:18,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 02:33:18,132 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 02:33:18,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound100.c [2023-12-25 02:33:19,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 02:33:19,206 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 02:33:19,207 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound100.c [2023-12-25 02:33:19,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29af8f14/535845ff318848c5b6df11303ea2854d/FLAG8b0723e70 [2023-12-25 02:33:19,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29af8f14/535845ff318848c5b6df11303ea2854d [2023-12-25 02:33:19,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 02:33:19,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 02:33:19,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 02:33:19,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 02:33:19,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 02:33:19,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@574ed4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19, skipping insertion in model container [2023-12-25 02:33:19,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 02:33:19,777 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/freire1_valuebound100.c[712,725] [2023-12-25 02:33:19,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 02:33:19,805 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 02:33:19,815 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/freire1_valuebound100.c[712,725] [2023-12-25 02:33:19,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 02:33:19,838 INFO L206 MainTranslator]: Completed translation [2023-12-25 02:33:19,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19 WrapperNode [2023-12-25 02:33:19,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 02:33:19,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 02:33:19,841 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 02:33:19,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 02:33:19,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,859 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,871 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-12-25 02:33:19,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 02:33:19,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 02:33:19,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 02:33:19,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 02:33:19,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,896 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]. [2023-12-25 02:33:19,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 02:33:19,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 02:33:19,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 02:33:19,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 02:33:19,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (1/1) ... [2023-12-25 02:33:19,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 02:33:19,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 02:33:19,961 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) [2023-12-25 02:33:19,989 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 [2023-12-25 02:33:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 02:33:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 02:33:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 02:33:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 02:33:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 02:33:19,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 02:33:20,043 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 02:33:20,046 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 02:33:20,859 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 02:33:20,897 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 02:33:20,897 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 02:33:20,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 02:33:20 BoogieIcfgContainer [2023-12-25 02:33:20,898 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 02:33:20,904 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 02:33:20,904 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 02:33:20,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 02:33:20,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 02:33:19" (1/3) ... [2023-12-25 02:33:20,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4038f8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 02:33:20, skipping insertion in model container [2023-12-25 02:33:20,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 02:33:19" (2/3) ... [2023-12-25 02:33:20,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4038f8e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 02:33:20, skipping insertion in model container [2023-12-25 02:33:20,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 02:33:20" (3/3) ... [2023-12-25 02:33:20,908 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound100.c [2023-12-25 02:33:20,937 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 02:33:20,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 02:33:20,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 02:33:20,977 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;@37138be3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 02:33:20,978 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 02:33:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 02:33:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-25 02:33:20,985 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 02:33:20,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 02:33:20,986 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 02:33:20,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 02:33:20,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1892700911, now seen corresponding path program 1 times [2023-12-25 02:33:21,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 02:33:21,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029762408] [2023-12-25 02:33:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 02:33:21,004 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 [2023-12-25 02:33:21,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 02:33:21,010 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) [2023-12-25 02:33:21,011 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 [2023-12-25 02:33:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 02:33:21,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 02:33:21,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 02:33:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 02:33:21,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 02:33:21,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 02:33:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029762408] [2023-12-25 02:33:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029762408] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 02:33:21,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 02:33:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 02:33:21,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93277538] [2023-12-25 02:33:21,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 02:33:21,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 02:33:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 02:33:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 02:33:21,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 02:33:21,407 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 02:33:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 02:33:21,427 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-12-25 02:33:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 02:33:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-25 02:33:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 02:33:21,434 INFO L225 Difference]: With dead ends: 28 [2023-12-25 02:33:21,434 INFO L226 Difference]: Without dead ends: 13 [2023-12-25 02:33:21,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 02:33:21,438 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-12-25 02:33:21,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 02:33:21,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-12-25 02:33:21,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-12-25 02:33:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-25 02:33:21,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-12-25 02:33:21,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2023-12-25 02:33:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 02:33:21,466 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-12-25 02:33:21,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 02:33:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-12-25 02:33:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-25 02:33:21,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 02:33:21,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 02:33:21,476 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 [2023-12-25 02:33:21,668 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 [2023-12-25 02:33:21,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 02:33:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 02:33:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash -115906089, now seen corresponding path program 1 times [2023-12-25 02:33:21,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 02:33:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87173183] [2023-12-25 02:33:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 02:33:21,673 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 [2023-12-25 02:33:21,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 02:33:21,677 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) [2023-12-25 02:33:21,704 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 [2023-12-25 02:33:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-25 02:33:21,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-25 02:33:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-25 02:33:22,277 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-25 02:33:22,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [458712423] [2023-12-25 02:33:22,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 02:33:22,278 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 02:33:22,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 02:33:22,318 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 02:33:22,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-25 02:33:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 02:33:23,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-25 02:33:23,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 02:33:51,678 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:33:59,915 WARN L293 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:34:08,098 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:34:12,158 WARN L854 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32)))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) is different from false [2023-12-25 02:34:28,850 WARN L293 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:34:33,902 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:34:37,963 WARN L854 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32)))))) (= (_ bv0 32) c___VERIFIER_assert_~cond)) (= (_ bv1 32) c___VERIFIER_assert_~cond)) is different from false [2023-12-25 02:34:54,630 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:35:00,110 WARN L293 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:35:04,163 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32)))))) is different from false [2023-12-25 02:35:08,201 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32)))))) is different from true [2023-12-25 02:35:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 02:35:08,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 02:35:08,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 02:35:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87173183] [2023-12-25 02:35:08,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 02:35:08,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [458712423] [2023-12-25 02:35:08,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [458712423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 02:35:08,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 02:35:08,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 02:35:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145187680] [2023-12-25 02:35:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 02:35:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 02:35:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 02:35:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 02:35:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=14, Unknown=4, NotChecked=24, Total=56 [2023-12-25 02:35:08,205 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 02:35:10,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:14,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:18,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:22,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:23,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:25,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:28,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:29,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:34,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:38,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:42,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:46,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:50,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:54,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:35:58,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:36:03,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:36:07,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:36:11,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:36:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 02:36:11,444 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-12-25 02:36:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 02:36:11,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-25 02:36:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 02:36:11,520 INFO L225 Difference]: With dead ends: 21 [2023-12-25 02:36:11,520 INFO L226 Difference]: Without dead ends: 19 [2023-12-25 02:36:11,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=18, Invalid=20, Unknown=4, NotChecked=30, Total=72 [2023-12-25 02:36:11,521 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 62.9s IncrementalHoareTripleChecker+Time [2023-12-25 02:36:11,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 13 Unknown, 68 Unchecked, 62.9s Time] [2023-12-25 02:36:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-25 02:36:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-12-25 02:36:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 02:36:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-12-25 02:36:11,526 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2023-12-25 02:36:11,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 02:36:11,526 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-12-25 02:36:11,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.0) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 02:36:11,526 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2023-12-25 02:36:11,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-25 02:36:11,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 02:36:11,527 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 02:36:11,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-25 02:36:11,753 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 (3)] Ended with exit code 0 [2023-12-25 02:36:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-25 02:36:11,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 02:36:11,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 02:36:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash -981796939, now seen corresponding path program 1 times [2023-12-25 02:36:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 02:36:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237627499] [2023-12-25 02:36:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 02:36:11,938 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 [2023-12-25 02:36:11,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 02:36:11,939 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) [2023-12-25 02:36:11,943 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 [2023-12-25 02:36:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 02:36:12,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-25 02:36:12,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 02:36:20,436 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:36:24,502 WARN L854 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2023-12-25 02:36:28,569 WARN L876 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2023-12-25 02:36:36,710 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:36:48,939 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:36:53,023 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) is different from false [2023-12-25 02:37:05,260 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:37:09,347 WARN L854 $PredicateComparison]: unable to prove that (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32)))) is different from false [2023-12-25 02:37:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-25 02:37:09,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 02:37:17,557 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:37:25,723 WARN L293 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:37:50,365 WARN L293 SmtUtils]: Spent 24.58s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-25 02:38:14,985 WARN L293 SmtUtils]: Spent 24.62s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 302] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-12-25 02:38:23,151 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:38:27,240 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2023-12-25 02:38:35,394 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:38:43,572 WARN L293 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:38:47,659 WARN L876 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (= (_ bv0 32) c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2023-12-25 02:38:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-12-25 02:38:47,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 02:38:47,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237627499] [2023-12-25 02:38:47,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237627499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 02:38:47,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 02:38:47,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-12-25 02:38:47,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069487635] [2023-12-25 02:38:47,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 02:38:47,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 02:38:47,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 02:38:47,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 02:38:47,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=17, Unknown=6, NotChecked=50, Total=90 [2023-12-25 02:38:47,665 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 02:38:51,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:38:55,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:39:00,013 WARN L876 $PredicateComparison]: unable to prove that (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (= (_ bv0 32) c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) is different from true [2023-12-25 02:39:04,090 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse0) .cse0)) is different from true [2023-12-25 02:39:08,164 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32)) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2023-12-25 02:39:12,257 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (= (_ bv1 32) c___VERIFIER_assert_~cond) (not .cse0) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse0 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))))) is different from false [2023-12-25 02:39:16,328 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) (= (_ bv1 32) c___VERIFIER_assert_~cond) (not .cse0) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) c_currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse0 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))))) is different from true [2023-12-25 02:39:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 02:39:16,329 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-12-25 02:39:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-25 02:39:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-12-25 02:39:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 02:39:16,331 INFO L225 Difference]: With dead ends: 21 [2023-12-25 02:39:16,331 INFO L226 Difference]: Without dead ends: 16 [2023-12-25 02:39:16,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=25, Invalid=20, Unknown=11, NotChecked=126, Total=182 [2023-12-25 02:39:16,332 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-12-25 02:39:16,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 2 Unknown, 91 Unchecked, 8.3s Time] [2023-12-25 02:39:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-25 02:39:16,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-25 02:39:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 02:39:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-25 02:39:16,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2023-12-25 02:39:16,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 02:39:16,336 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-25 02:39:16,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-25 02:39:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-25 02:39:16,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-25 02:39:16,337 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 02:39:16,337 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 02:39:16,350 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 [2023-12-25 02:39:16,537 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 [2023-12-25 02:39:16,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 02:39:16,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 02:39:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash -339209529, now seen corresponding path program 1 times [2023-12-25 02:39:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 02:39:16,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571214384] [2023-12-25 02:39:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 02:39:16,539 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 [2023-12-25 02:39:16,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 02:39:16,540 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) [2023-12-25 02:39:16,541 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 [2023-12-25 02:39:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-25 02:39:17,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-25 02:39:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-25 02:39:17,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-25 02:39:17,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [342667236] [2023-12-25 02:39:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 02:39:17,812 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 02:39:17,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 02:39:17,813 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 02:39:17,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-25 02:39:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 02:39:21,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-25 02:39:21,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 02:39:35,900 WARN L293 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 02:40:10,190 WARN L293 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 02:40:28,596 WARN L293 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:40:41,431 WARN L293 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:40:53,768 WARN L293 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:41:06,863 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:41:11,022 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse5))) (and (fp.gt .cse0 .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse2) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse3) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32))))) (= |c___VERIFIER_assert_#in~cond| (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse6 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse5))) (and (fp.gt .cse6 .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse2) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse3) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse6 .cse1)))) (_ bv0 32)))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) is different from false [2023-12-25 02:41:22,132 WARN L293 SmtUtils]: Spent 6.98s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:41:30,383 WARN L293 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:41:38,548 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:41:50,820 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:41:59,068 WARN L293 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:42:07,237 WARN L293 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:42:11,376 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse5))) (and (fp.gt .cse0 .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse2) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse3) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse6 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse5))) (and (fp.gt .cse6 .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse2) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse3) (fp.mul roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse6 .cse1)))) (_ bv0 32)))))) (= (_ bv0 32) c___VERIFIER_assert_~cond)))) is different from false [2023-12-25 02:42:23,256 WARN L293 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:42:36,198 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:42:40,271 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.gt .cse0 .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))))) is different from false [2023-12-25 02:42:44,323 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.gt .cse0 .cse1) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))))) is different from true [2023-12-25 02:42:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-25 02:42:44,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 02:42:54,266 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:42:58,340 WARN L854 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2023-12-25 02:43:02,409 WARN L876 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2023-12-25 02:43:10,547 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:43:18,870 WARN L293 SmtUtils]: Spent 8.32s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:43:27,061 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:43:31,182 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (_ bv0 32)) (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse1)))) is different from false [2023-12-25 02:43:35,270 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (_ bv0 32)) (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse1)))) is different from true [2023-12-25 02:43:43,566 WARN L293 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:43:51,774 WARN L293 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:44:00,073 WARN L293 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:44:08,266 WARN L293 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:44:19,802 WARN L293 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:44:27,693 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))))) is different from true [2023-12-25 02:44:38,369 WARN L293 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:44:45,452 WARN L293 SmtUtils]: Spent 7.08s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 02:44:49,523 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) is different from false [2023-12-25 02:44:53,594 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) is different from true [2023-12-25 02:44:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-12-25 02:44:53,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 02:44:53,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571214384] [2023-12-25 02:44:53,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-25 02:44:53,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [342667236] [2023-12-25 02:44:53,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [342667236] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 02:44:53,609 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 02:44:53,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-12-25 02:44:53,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279054973] [2023-12-25 02:44:53,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 02:44:53,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 02:44:53,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 02:44:53,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 02:44:53,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=54, Unknown=11, NotChecked=140, Total=240 [2023-12-25 02:44:53,611 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 02:44:59,177 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) (and (let ((.cse1 (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32)))) (.cse0 (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse3))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and (or (not .cse1) (not .cse0)) .cse2))) (let ((.cse4 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.gt .cse4 .cse3)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse5 |c_ULTIMATE.start_main_~a~0#1|) .cse5)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse4 .cse3))))) .cse2)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-25 02:45:03,253 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)))) (and (let ((.cse1 (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32)))) (.cse0 (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse3))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and (or (not .cse1) (not .cse0)) .cse2))) (let ((.cse4 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.gt .cse4 .cse3)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse5 |c_ULTIMATE.start_main_~a~0#1|) .cse5)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse4 .cse3))))) .cse2)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2023-12-25 02:45:07,334 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse0) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.gt .cse1 .cse0)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse0))))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-25 02:45:11,405 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse0) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))) (or (not (fp.gt .cse1 .cse0)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse0))))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2023-12-25 02:45:16,453 WARN L876 $PredicateComparison]: unable to prove that (and (fp.geq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (_ bv0 32)) (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse1)))) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))) (= (_ bv0 32) |c_ULTIMATE.start_main_~r~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2023-12-25 02:45:20,634 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (= |c_ULTIMATE.start_main_~x~0#1| (fp.sub c_currentRoundingMode .cse0 .cse1)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (fp.gt .cse0 .cse1) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))) (= (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-25 02:45:24,724 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (= |c_ULTIMATE.start_main_~x~0#1| (fp.sub c_currentRoundingMode .cse0 .cse1)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (fp.gt .cse0 .cse1) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv100 32))) (= (_ bv1 32) |c_ULTIMATE.start_main_~r~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2023-12-25 02:46:28,022 WARN L293 SmtUtils]: Spent 30.98s on a formula simplification. DAG size of input: 36 DAG size of output: 28 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 02:46:32,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:46:36,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:46:40,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:46:44,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:46:48,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:46:52,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:46:56,432 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) c___VERIFIER_assert_~cond))) (and (not .cse0) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv100 32))) (.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (.cse5 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse6 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (or (and (= (_ bv1 32) c___VERIFIER_assert_~cond) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse6))) (and (fp.gt .cse1 .cse2) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse3) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse4) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven .cse1 .cse2)))) (_ bv0 32)))))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (let ((.cse7 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse6))) (and (fp.gt .cse7 .cse2) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| .cse3) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) .cse4) (fp.mul roundNearestTiesToEven .cse5 (fp.sub roundNearestTiesToEven .cse7 .cse2)))) (_ bv0 32)))))) .cse0))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) is different from false [2023-12-25 02:46:59,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:47:04,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:47:08,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:47:12,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:47:16,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-25 02:47:20,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:47:24,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 02:47:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 02:47:24,345 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-12-25 02:47:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 02:47:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2023-12-25 02:47:24,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 02:47:24,346 INFO L225 Difference]: With dead ends: 27 [2023-12-25 02:47:24,346 INFO L226 Difference]: Without dead ends: 25 [2023-12-25 02:47:24,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 169.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=26, NotChecked=348, Total=506 [2023-12-25 02:47:24,347 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 53.6s IncrementalHoareTripleChecker+Time [2023-12-25 02:47:24,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 63 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 12 Unknown, 223 Unchecked, 53.6s Time] [2023-12-25 02:47:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-25 02:47:24,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-25 02:47:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-25 02:47:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2023-12-25 02:47:24,351 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 15 [2023-12-25 02:47:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 02:47:24,351 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2023-12-25 02:47:24,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-25 02:47:24,351 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2023-12-25 02:47:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 02:47:24,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 02:47:24,352 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-25 02:47:24,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2023-12-25 02:47:24,601 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 [2023-12-25 02:47:24,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 02:47:24,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 02:47:24,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 02:47:24,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1146848297, now seen corresponding path program 2 times [2023-12-25 02:47:24,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 02:47:24,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605643800] [2023-12-25 02:47:24,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 02:47:24,765 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 [2023-12-25 02:47:24,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 02:47:24,766 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) [2023-12-25 02:47:24,770 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 [2023-12-25 02:47:25,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 02:47:25,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-12-25 02:47:25,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-25 02:47:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-25 02:47:26,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2023-12-25 02:47:26,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [938597260] [2023-12-25 02:47:26,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-25 02:47:26,526 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-25 02:47:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-25 02:47:26,527 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-25 02:47:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-25 02:47:30,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-25 02:47:30,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-25 02:47:30,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-25 02:47:30,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-25 02:48:09,071 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 [2023-12-25 02:48:09,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 02:48:09,092 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 02:48:10,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-25 02:48:10,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-25 02:48:10,272 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-25 02:48:10,313 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 02:48:10,314 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 23 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-25 02:48:10,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-25 02:48:10,323 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-12-25 02:48:10,325 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 02:48:10,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 02:48:10 BoogieIcfgContainer [2023-12-25 02:48:10,326 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 02:48:10,326 INFO L158 Benchmark]: Toolchain (without parser) took 890687.21ms. Allocated memory is still 237.0MB. Free memory was 195.4MB in the beginning and 156.7MB in the end (delta: 38.7MB). Peak memory consumption was 38.7MB. Max. memory is 8.0GB. [2023-12-25 02:48:10,326 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 156.2MB. Free memory is still 105.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 02:48:10,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.02ms. Allocated memory is still 237.0MB. Free memory was 194.8MB in the beginning and 183.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 02:48:10,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.82ms. Allocated memory is still 237.0MB. Free memory was 183.3MB in the beginning and 182.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 02:48:10,327 INFO L158 Benchmark]: Boogie Preprocessor took 49.20ms. Allocated memory is still 237.0MB. Free memory was 182.1MB in the beginning and 180.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 02:48:10,327 INFO L158 Benchmark]: RCFGBuilder took 976.18ms. Allocated memory is still 237.0MB. Free memory was 180.2MB in the beginning and 168.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 02:48:10,327 INFO L158 Benchmark]: TraceAbstraction took 889422.11ms. Allocated memory is still 237.0MB. Free memory was 167.6MB in the beginning and 156.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 02:48:10,328 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 156.2MB. Free memory is still 105.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.02ms. Allocated memory is still 237.0MB. Free memory was 194.8MB in the beginning and 183.3MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.82ms. Allocated memory is still 237.0MB. Free memory was 183.3MB in the beginning and 182.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.20ms. Allocated memory is still 237.0MB. Free memory was 182.1MB in the beginning and 180.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 976.18ms. Allocated memory is still 237.0MB. Free memory was 180.2MB in the beginning and 168.6MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 889422.11ms. Allocated memory is still 237.0MB. Free memory was 167.6MB in the beginning and 156.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 23 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 889.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 242.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 124.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 123.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 382 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 39 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 24 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 235.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.1s SatisfiabilityAnalysisTime, 592.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 15 QuantifiedInterpolants, 1348 SizeOfPredicates, 15 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 4/12 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