/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/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 17:45:44,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 17:45:44,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 17:45:44,618 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 17:45:44,618 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 17:45:44,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 17:45:44,640 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 17:45:44,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 17:45:44,640 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 17:45:44,643 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 17:45:44,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 17:45:44,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 17:45:44,644 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 17:45:44,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 17:45:44,645 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 17:45:44,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 17:45:44,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 17:45:44,646 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 17:45:44,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 17:45:44,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 17:45:44,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 17:45:44,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 17:45:44,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 17:45:44,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 17:45:44,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:45:44,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 17:45:44,649 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 17:45:44,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 17:45:44,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 17:45:44,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 17:45:44,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 17:45:44,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 17:45:44,651 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 17:45:44,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 17:45:44,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 17:45:44,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 17:45:44,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 17:45:44,827 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 17:45:44,827 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 17:45:44,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-25.i [2023-12-24 17:45:45,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 17:45:45,898 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 17:45:45,898 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-25.i [2023-12-24 17:45:45,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/757edf7f6/029c7d797bdd497baae3763b65ca8ae7/FLAG316c4021f [2023-12-24 17:45:45,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/757edf7f6/029c7d797bdd497baae3763b65ca8ae7 [2023-12-24 17:45:45,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 17:45:45,919 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 17:45:45,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 17:45:45,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 17:45:45,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 17:45:45,923 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:45:45" (1/1) ... [2023-12-24 17:45:45,924 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158032b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:45, skipping insertion in model container [2023-12-24 17:45:45,924 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 05:45:45" (1/1) ... [2023-12-24 17:45:45,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 17:45:46,060 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-25.i[916,929] [2023-12-24 17:45:46,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:45:46,103 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 17:45:46,110 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-25.i[916,929] [2023-12-24 17:45:46,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 17:45:46,151 INFO L206 MainTranslator]: Completed translation [2023-12-24 17:45:46,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46 WrapperNode [2023-12-24 17:45:46,151 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 17:45:46,152 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 17:45:46,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 17:45:46,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 17:45:46,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,200 INFO L138 Inliner]: procedures = 36, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 552 [2023-12-24 17:45:46,201 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 17:45:46,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 17:45:46,202 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 17:45:46,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 17:45:46,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,228 INFO L175 MemorySlicer]: Split 146 memory accesses to 2 slices as follows [2, 144]. 99 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 14]. The 19 writes are split as follows [0, 19]. [2023-12-24 17:45:46,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,252 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,258 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 17:45:46,259 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 17:45:46,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 17:45:46,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 17:45:46,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (1/1) ... [2023-12-24 17:45:46,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 17:45:46,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 17:45:46,309 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) [2023-12-24 17:45:46,323 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 [2023-12-24 17:45:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 17:45:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 17:45:46,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 17:45:46,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 17:45:46,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 17:45:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 17:45:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 17:45:46,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 17:45:46,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 17:45:46,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 17:45:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 17:45:46,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 17:45:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 17:45:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 17:45:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 17:45:46,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 17:45:46,485 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 17:45:46,487 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 17:45:46,886 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 17:45:46,907 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 17:45:46,907 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 17:45:46,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:45:46 BoogieIcfgContainer [2023-12-24 17:45:46,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 17:45:46,909 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 17:45:46,909 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 17:45:46,911 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 17:45:46,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 05:45:45" (1/3) ... [2023-12-24 17:45:46,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552bb7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:45:46, skipping insertion in model container [2023-12-24 17:45:46,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 05:45:46" (2/3) ... [2023-12-24 17:45:46,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552bb7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 05:45:46, skipping insertion in model container [2023-12-24 17:45:46,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 05:45:46" (3/3) ... [2023-12-24 17:45:46,912 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-25.i [2023-12-24 17:45:46,923 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 17:45:46,923 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 17:45:46,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 17:45:46,959 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;@42ce52a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 17:45:46,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 17:45:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 17:45:46,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:46,972 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:46,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:46,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:46,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1011491669, now seen corresponding path program 1 times [2023-12-24 17:45:46,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:46,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014557989] [2023-12-24 17:45:46,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:46,993 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 [2023-12-24 17:45:46,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:46,995 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) [2023-12-24 17:45:47,029 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 [2023-12-24 17:45:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:47,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 17:45:47,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:47,339 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-24 17:45:47,339 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:47,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:47,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014557989] [2023-12-24 17:45:47,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014557989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:47,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:47,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 17:45:47,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416786413] [2023-12-24 17:45:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:47,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 17:45:47,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:47,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 17:45:47,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:45:47,394 INFO L87 Difference]: Start difference. First operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:45:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:47,426 INFO L93 Difference]: Finished difference Result 231 states and 368 transitions. [2023-12-24 17:45:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 17:45:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-24 17:45:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:47,432 INFO L225 Difference]: With dead ends: 231 [2023-12-24 17:45:47,433 INFO L226 Difference]: Without dead ends: 115 [2023-12-24 17:45:47,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 17:45:47,437 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:47,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:45:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-24 17:45:47,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-24 17:45:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-12-24 17:45:47,466 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 139 [2023-12-24 17:45:47,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:47,466 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-12-24 17:45:47,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:45:47,467 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-12-24 17:45:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 17:45:47,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:47,471 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:47,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 17:45:47,678 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 [2023-12-24 17:45:47,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:47,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2109602891, now seen corresponding path program 1 times [2023-12-24 17:45:47,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:47,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1097090759] [2023-12-24 17:45:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:47,681 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 [2023-12-24 17:45:47,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:47,682 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) [2023-12-24 17:45:47,693 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 [2023-12-24 17:45:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:47,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:45:47,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:48,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 17:45:48,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:48,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 20 [2023-12-24 17:45:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:45:48,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:48,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:48,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1097090759] [2023-12-24 17:45:48,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1097090759] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:48,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:48,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 17:45:48,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567657851] [2023-12-24 17:45:48,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:48,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:45:48,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:48,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:45:48,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:45:48,254 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 12 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:49,978 INFO L93 Difference]: Finished difference Result 346 states and 506 transitions. [2023-12-24 17:45:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 17:45:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 139 [2023-12-24 17:45:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:49,981 INFO L225 Difference]: With dead ends: 346 [2023-12-24 17:45:49,981 INFO L226 Difference]: Without dead ends: 232 [2023-12-24 17:45:49,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:45:49,983 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 374 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:49,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 454 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 17:45:49,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-24 17:45:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 125. [2023-12-24 17:45:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.3883495145631068) internal successors, (143), 103 states have internal predecessors, (143), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2023-12-24 17:45:50,011 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 179 transitions. Word has length 139 [2023-12-24 17:45:50,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:50,013 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 179 transitions. [2023-12-24 17:45:50,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 11 states have internal predecessors, (58), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 179 transitions. [2023-12-24 17:45:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 17:45:50,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:50,015 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:50,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 17:45:50,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:50,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:50,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:50,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1900187282, now seen corresponding path program 1 times [2023-12-24 17:45:50,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:50,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093441944] [2023-12-24 17:45:50,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:50,234 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 [2023-12-24 17:45:50,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:50,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:45:50,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 17:45:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:50,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 17:45:50,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:50,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 17:45:50,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:50,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:45:50,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:50,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:45:50,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:50,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 20 [2023-12-24 17:45:50,856 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:45:50,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:50,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:50,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093441944] [2023-12-24 17:45:50,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093441944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:50,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:50,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 17:45:50,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319180265] [2023-12-24 17:45:50,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:45:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:45:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:45:50,875 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand has 12 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:52,067 INFO L93 Difference]: Finished difference Result 356 states and 513 transitions. [2023-12-24 17:45:52,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 17:45:52,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 140 [2023-12-24 17:45:52,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:52,070 INFO L225 Difference]: With dead ends: 356 [2023-12-24 17:45:52,070 INFO L226 Difference]: Without dead ends: 232 [2023-12-24 17:45:52,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:45:52,071 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 307 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:52,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 411 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 17:45:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-24 17:45:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 144. [2023-12-24 17:45:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 122 states have internal predecessors, (172), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 208 transitions. [2023-12-24 17:45:52,086 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 208 transitions. Word has length 140 [2023-12-24 17:45:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:52,087 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 208 transitions. [2023-12-24 17:45:52,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.9) internal successors, (59), 11 states have internal predecessors, (59), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 208 transitions. [2023-12-24 17:45:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 17:45:52,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:52,089 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:52,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-24 17:45:52,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:52,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:52,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash -14158912, now seen corresponding path program 1 times [2023-12-24 17:45:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:52,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977224806] [2023-12-24 17:45:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:52,298 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 [2023-12-24 17:45:52,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:52,299 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) [2023-12-24 17:45:52,344 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 [2023-12-24 17:45:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:52,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 17:45:52,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:45:52,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:52,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:52,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977224806] [2023-12-24 17:45:52,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977224806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:52,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:52,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:45:52,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302246480] [2023-12-24 17:45:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:52,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:45:52,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:45:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:45:52,557 INFO L87 Difference]: Start difference. First operand 144 states and 208 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:52,604 INFO L93 Difference]: Finished difference Result 317 states and 460 transitions. [2023-12-24 17:45:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:45:52,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2023-12-24 17:45:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:52,606 INFO L225 Difference]: With dead ends: 317 [2023-12-24 17:45:52,606 INFO L226 Difference]: Without dead ends: 174 [2023-12-24 17:45:52,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:45:52,607 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 102 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:52,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 703 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:45:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-24 17:45:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 147. [2023-12-24 17:45:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.4) internal successors, (175), 125 states have internal predecessors, (175), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 211 transitions. [2023-12-24 17:45:52,619 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 211 transitions. Word has length 142 [2023-12-24 17:45:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:52,619 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 211 transitions. [2023-12-24 17:45:52,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 211 transitions. [2023-12-24 17:45:52,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 17:45:52,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:52,621 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:52,629 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 [2023-12-24 17:45:52,828 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 [2023-12-24 17:45:52,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:52,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash 772072394, now seen corresponding path program 1 times [2023-12-24 17:45:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:52,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634742631] [2023-12-24 17:45:52,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:52,830 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 [2023-12-24 17:45:52,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:52,831 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) [2023-12-24 17:45:52,833 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 [2023-12-24 17:45:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:53,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:45:53,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:53,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:45:53,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 17:45:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:45:53,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:53,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634742631] [2023-12-24 17:45:53,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634742631] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:53,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:53,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:45:53,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926634783] [2023-12-24 17:45:53,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:53,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:45:53,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:53,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:45:53,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:45:53,113 INFO L87 Difference]: Start difference. First operand 147 states and 211 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:53,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:53,605 INFO L93 Difference]: Finished difference Result 420 states and 602 transitions. [2023-12-24 17:45:53,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:45:53,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-24 17:45:53,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:53,607 INFO L225 Difference]: With dead ends: 420 [2023-12-24 17:45:53,607 INFO L226 Difference]: Without dead ends: 274 [2023-12-24 17:45:53,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:45:53,609 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 151 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 588 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:45:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-24 17:45:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 150. [2023-12-24 17:45:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.390625) internal successors, (178), 128 states have internal predecessors, (178), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 214 transitions. [2023-12-24 17:45:53,622 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 214 transitions. Word has length 143 [2023-12-24 17:45:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:53,622 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 214 transitions. [2023-12-24 17:45:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:53,623 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 214 transitions. [2023-12-24 17:45:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 17:45:53,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:53,624 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:53,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 17:45:53,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:53,832 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:53,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash 638058888, now seen corresponding path program 1 times [2023-12-24 17:45:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:53,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112588839] [2023-12-24 17:45:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:53,833 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 [2023-12-24 17:45:53,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:53,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:45:53,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-24 17:45:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:54,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:45:54,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:54,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 17:45:54,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:54,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2023-12-24 17:45:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:45:54,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:54,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:54,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112588839] [2023-12-24 17:45:54,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112588839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:54,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:54,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 17:45:54,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780871769] [2023-12-24 17:45:54,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:54,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 17:45:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 17:45:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:45:54,285 INFO L87 Difference]: Start difference. First operand 150 states and 214 transitions. Second operand has 13 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:55,227 INFO L93 Difference]: Finished difference Result 301 states and 429 transitions. [2023-12-24 17:45:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 17:45:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 143 [2023-12-24 17:45:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:55,229 INFO L225 Difference]: With dead ends: 301 [2023-12-24 17:45:55,229 INFO L226 Difference]: Without dead ends: 152 [2023-12-24 17:45:55,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:45:55,230 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 240 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:55,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 409 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-24 17:45:55,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-12-24 17:45:55,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2023-12-24 17:45:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.392) internal successors, (174), 125 states have internal predecessors, (174), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 210 transitions. [2023-12-24 17:45:55,238 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 210 transitions. Word has length 143 [2023-12-24 17:45:55,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:55,239 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 210 transitions. [2023-12-24 17:45:55,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 states have internal predecessors, (62), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:55,239 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 210 transitions. [2023-12-24 17:45:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 17:45:55,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:55,240 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:55,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-24 17:45:55,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:55,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:55,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1037807901, now seen corresponding path program 1 times [2023-12-24 17:45:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238296944] [2023-12-24 17:45:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:55,448 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 [2023-12-24 17:45:55,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:55,449 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) [2023-12-24 17:45:55,450 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 [2023-12-24 17:45:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:55,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-24 17:45:55,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:55,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:45:55,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:45:55,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:45:55,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-24 17:45:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:45:55,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:55,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238296944] [2023-12-24 17:45:55,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238296944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:55,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:55,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:45:55,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963333983] [2023-12-24 17:45:55,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:55,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:45:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:55,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:45:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:45:55,827 INFO L87 Difference]: Start difference. First operand 147 states and 210 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:56,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:56,481 INFO L93 Difference]: Finished difference Result 420 states and 599 transitions. [2023-12-24 17:45:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:45:56,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-12-24 17:45:56,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:56,483 INFO L225 Difference]: With dead ends: 420 [2023-12-24 17:45:56,483 INFO L226 Difference]: Without dead ends: 274 [2023-12-24 17:45:56,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:45:56,484 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 190 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:56,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 563 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:45:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-24 17:45:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 148. [2023-12-24 17:45:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 126 states have (on average 1.3888888888888888) internal successors, (175), 126 states have internal predecessors, (175), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 211 transitions. [2023-12-24 17:45:56,493 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 211 transitions. Word has length 144 [2023-12-24 17:45:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:56,493 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 211 transitions. [2023-12-24 17:45:56,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:56,493 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 211 transitions. [2023-12-24 17:45:56,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 17:45:56,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:56,494 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:56,502 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 [2023-12-24 17:45:56,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:56,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:56,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:56,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1178356511, now seen corresponding path program 1 times [2023-12-24 17:45:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:56,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974217103] [2023-12-24 17:45:56,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:56,703 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 [2023-12-24 17:45:56,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:56,704 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:45:56,704 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 (9)] Waiting until timeout for monitored process [2023-12-24 17:45:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:57,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 17:45:57,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:57,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 30 [2023-12-24 17:45:57,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:57,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 17:45:57,368 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:57,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 33 [2023-12-24 17:45:57,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:57,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 19 [2023-12-24 17:45:57,392 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:45:57,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:57,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:57,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974217103] [2023-12-24 17:45:57,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974217103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:57,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:57,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 17:45:57,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422976119] [2023-12-24 17:45:57,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:57,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 17:45:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 17:45:57,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:45:57,394 INFO L87 Difference]: Start difference. First operand 148 states and 211 transitions. Second operand has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:58,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:58,272 INFO L93 Difference]: Finished difference Result 297 states and 423 transitions. [2023-12-24 17:45:58,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 17:45:58,273 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 144 [2023-12-24 17:45:58,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:58,274 INFO L225 Difference]: With dead ends: 297 [2023-12-24 17:45:58,274 INFO L226 Difference]: Without dead ends: 150 [2023-12-24 17:45:58,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:45:58,275 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 179 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:58,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 387 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 17:45:58,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-24 17:45:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 126. [2023-12-24 17:45:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 104 states have internal predecessors, (142), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-24 17:45:58,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 178 transitions. [2023-12-24 17:45:58,281 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 178 transitions. Word has length 144 [2023-12-24 17:45:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:58,282 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 178 transitions. [2023-12-24 17:45:58,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:45:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 178 transitions. [2023-12-24 17:45:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 17:45:58,283 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:58,283 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:58,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-24 17:45:58,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:58,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:58,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1517375579, now seen corresponding path program 1 times [2023-12-24 17:45:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971446809] [2023-12-24 17:45:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:58,491 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 [2023-12-24 17:45:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:58,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:45:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 17:45:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:45:58,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 17:45:58,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:45:58,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:45:58,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:58,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:45:58,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:45:58,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:45:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:45:58,957 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:45:58,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:45:58,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971446809] [2023-12-24 17:45:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971446809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:45:58,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:45:58,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:45:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864272150] [2023-12-24 17:45:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:45:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:45:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:45:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:45:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:45:58,959 INFO L87 Difference]: Start difference. First operand 126 states and 178 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:45:59,570 INFO L93 Difference]: Finished difference Result 311 states and 439 transitions. [2023-12-24 17:45:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:45:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-12-24 17:45:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:45:59,572 INFO L225 Difference]: With dead ends: 311 [2023-12-24 17:45:59,572 INFO L226 Difference]: Without dead ends: 186 [2023-12-24 17:45:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:45:59,572 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 108 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:45:59,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 435 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:45:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-24 17:45:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2023-12-24 17:45:59,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 158 states have (on average 1.3860759493670887) internal successors, (219), 159 states have internal predecessors, (219), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:45:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 259 transitions. [2023-12-24 17:45:59,580 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 259 transitions. Word has length 144 [2023-12-24 17:45:59,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:45:59,581 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 259 transitions. [2023-12-24 17:45:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:45:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 259 transitions. [2023-12-24 17:45:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:45:59,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:45:59,582 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:45:59,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-24 17:45:59,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:45:59,789 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:45:59,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:45:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1758335146, now seen corresponding path program 1 times [2023-12-24 17:45:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:45:59,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271067835] [2023-12-24 17:45:59,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:45:59,790 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 [2023-12-24 17:45:59,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:45:59,794 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:45:59,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-24 17:46:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:46:00,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-24 17:46:00,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:46:00,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:46:00,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:46:00,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:46:00,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-24 17:46:00,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-24 17:46:00,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-24 17:46:00,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2023-12-24 17:46:00,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2023-12-24 17:46:00,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 17:46:00,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:00,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 39 [2023-12-24 17:46:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 449 proven. 30 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-24 17:46:01,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:46:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-24 17:46:01,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:46:01,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271067835] [2023-12-24 17:46:01,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271067835] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:46:01,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:46:01,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2023-12-24 17:46:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565353041] [2023-12-24 17:46:01,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:46:01,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 17:46:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:46:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 17:46:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:46:01,876 INFO L87 Difference]: Start difference. First operand 183 states and 259 transitions. Second operand has 20 states, 18 states have (on average 6.444444444444445) internal successors, (116), 20 states have internal predecessors, (116), 7 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-24 17:46:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:46:04,927 INFO L93 Difference]: Finished difference Result 413 states and 579 transitions. [2023-12-24 17:46:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 17:46:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 6.444444444444445) internal successors, (116), 20 states have internal predecessors, (116), 7 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) Word has length 146 [2023-12-24 17:46:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:46:04,929 INFO L225 Difference]: With dead ends: 413 [2023-12-24 17:46:04,929 INFO L226 Difference]: Without dead ends: 231 [2023-12-24 17:46:04,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2023-12-24 17:46:04,930 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 913 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 169 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:46:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 440 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1074 Invalid, 12 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 17:46:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-24 17:46:04,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 191. [2023-12-24 17:46:04,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 164 states have (on average 1.3597560975609757) internal successors, (223), 165 states have internal predecessors, (223), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-24 17:46:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 263 transitions. [2023-12-24 17:46:04,940 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 263 transitions. Word has length 146 [2023-12-24 17:46:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:46:04,940 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 263 transitions. [2023-12-24 17:46:04,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 6.444444444444445) internal successors, (116), 20 states have internal predecessors, (116), 7 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 5 states have call predecessors, (34), 7 states have call successors, (34) [2023-12-24 17:46:04,941 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 263 transitions. [2023-12-24 17:46:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:46:04,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:46:04,942 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:46:04,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-12-24 17:46:05,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:46:05,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:46:05,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:46:05,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1438130094, now seen corresponding path program 1 times [2023-12-24 17:46:05,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:46:05,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761902022] [2023-12-24 17:46:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:46:05,150 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 [2023-12-24 17:46:05,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:46:05,151 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:46:05,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-24 17:46:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:46:05,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 17:46:05,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:46:05,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:46:05,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:46:05,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:46:06,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:06,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:46:06,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:06,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:46:06,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:06,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 47 [2023-12-24 17:46:06,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:06,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 38 [2023-12-24 17:46:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 17:46:06,342 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:46:06,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:46:06,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761902022] [2023-12-24 17:46:06,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761902022] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:46:06,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:46:06,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 17:46:06,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356661843] [2023-12-24 17:46:06,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:46:06,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:46:06,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:46:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:46:06,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:46:06,344 INFO L87 Difference]: Start difference. First operand 191 states and 263 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:46:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:46:07,997 INFO L93 Difference]: Finished difference Result 576 states and 791 transitions. [2023-12-24 17:46:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:46:07,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2023-12-24 17:46:07,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:46:07,999 INFO L225 Difference]: With dead ends: 576 [2023-12-24 17:46:07,999 INFO L226 Difference]: Without dead ends: 386 [2023-12-24 17:46:08,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:46:08,000 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 334 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:46:08,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 363 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 17:46:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-24 17:46:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 379. [2023-12-24 17:46:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 325 states have (on average 1.3507692307692307) internal successors, (439), 328 states have internal predecessors, (439), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:46:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 519 transitions. [2023-12-24 17:46:08,026 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 519 transitions. Word has length 146 [2023-12-24 17:46:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:46:08,026 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 519 transitions. [2023-12-24 17:46:08,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:46:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 519 transitions. [2023-12-24 17:46:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:46:08,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:46:08,027 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:46:08,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-12-24 17:46:08,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:46:08,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:46:08,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:46:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1219275376, now seen corresponding path program 1 times [2023-12-24 17:46:08,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:46:08,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146856334] [2023-12-24 17:46:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:46:08,234 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 [2023-12-24 17:46:08,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:46:08,236 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:46:08,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-24 17:46:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:46:09,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 17:46:09,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:46:09,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:46:10,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:46:10,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 17:46:10,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:10,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 28 [2023-12-24 17:46:10,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:10,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 17:46:10,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:10,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 17:46:10,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:10,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2023-12-24 17:46:11,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:11,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 17:46:11,171 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:11,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 17:46:11,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:11,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 76 [2023-12-24 17:46:11,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:11,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 117 treesize of output 82 [2023-12-24 17:46:41,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:46:41,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 146 treesize of output 95 [2023-12-24 17:46:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 411 proven. 81 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 17:46:50,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:46:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:46:52,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:46:52,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146856334] [2023-12-24 17:46:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146856334] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:46:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:46:52,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [29] total 37 [2023-12-24 17:46:52,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069630746] [2023-12-24 17:46:52,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:46:52,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:46:52,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:46:52,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:46:52,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1148, Unknown=5, NotChecked=0, Total=1332 [2023-12-24 17:46:52,469 INFO L87 Difference]: Start difference. First operand 379 states and 519 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:46:56,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:00,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:05,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:09,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:13,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:17,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:20,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:26,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:30,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:34,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:38,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:47:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:47:38,874 INFO L93 Difference]: Finished difference Result 1111 states and 1555 transitions. [2023-12-24 17:47:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 17:47:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:47:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:47:38,880 INFO L225 Difference]: With dead ends: 1111 [2023-12-24 17:47:38,880 INFO L226 Difference]: Without dead ends: 733 [2023-12-24 17:47:38,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 254 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=337, Invalid=2310, Unknown=5, NotChecked=0, Total=2652 [2023-12-24 17:47:38,882 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 394 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:47:38,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1576 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1136 Invalid, 8 Unknown, 0 Unchecked, 44.7s Time] [2023-12-24 17:47:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2023-12-24 17:47:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 405. [2023-12-24 17:47:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 351 states have (on average 1.358974358974359) internal successors, (477), 354 states have internal predecessors, (477), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:47:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 557 transitions. [2023-12-24 17:47:38,914 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 557 transitions. Word has length 146 [2023-12-24 17:47:38,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:47:38,914 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 557 transitions. [2023-12-24 17:47:38,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:47:38,915 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 557 transitions. [2023-12-24 17:47:38,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:47:38,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:47:38,917 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:47:38,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-24 17:47:39,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:47:39,128 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:47:39,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:47:39,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1914336443, now seen corresponding path program 1 times [2023-12-24 17:47:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:47:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561048841] [2023-12-24 17:47:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:47:39,129 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 [2023-12-24 17:47:39,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:47:39,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 17:47:39,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-24 17:47:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:47:40,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-24 17:47:40,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:47:40,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:47:40,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:47:40,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-12-24 17:47:40,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:40,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 28 [2023-12-24 17:47:41,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:41,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 17:47:41,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:41,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 40 [2023-12-24 17:47:41,224 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:41,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2023-12-24 17:47:41,463 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:41,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 17:47:41,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:41,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 53 [2023-12-24 17:47:41,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:47:41,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 76 [2023-12-24 17:48:30,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:48:30,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 109 [2023-12-24 17:48:31,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:48:31,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 176 treesize of output 109 [2023-12-24 17:49:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 411 proven. 81 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 17:49:04,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:49:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:49:06,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:49:06,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561048841] [2023-12-24 17:49:06,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561048841] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:49:06,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:49:06,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [28] total 36 [2023-12-24 17:49:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511940997] [2023-12-24 17:49:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:49:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:49:06,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:49:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:49:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1091, Unknown=20, NotChecked=0, Total=1260 [2023-12-24 17:49:06,801 INFO L87 Difference]: Start difference. First operand 405 states and 557 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:49:11,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:49:15,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:49:22,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:49:26,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:49:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:49:34,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:49:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:49:34,678 INFO L93 Difference]: Finished difference Result 1023 states and 1418 transitions. [2023-12-24 17:49:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 17:49:34,685 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:49:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:49:34,687 INFO L225 Difference]: With dead ends: 1023 [2023-12-24 17:49:34,687 INFO L226 Difference]: Without dead ends: 619 [2023-12-24 17:49:34,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 85.9s TimeCoverageRelationStatistics Valid=266, Invalid=1876, Unknown=20, NotChecked=0, Total=2162 [2023-12-24 17:49:34,689 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 263 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:49:34,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1365 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 927 Invalid, 4 Unknown, 0 Unchecked, 26.1s Time] [2023-12-24 17:49:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2023-12-24 17:49:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 415. [2023-12-24 17:49:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 361 states have (on average 1.3545706371191135) internal successors, (489), 364 states have internal predecessors, (489), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:49:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 569 transitions. [2023-12-24 17:49:34,713 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 569 transitions. Word has length 146 [2023-12-24 17:49:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:49:34,713 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 569 transitions. [2023-12-24 17:49:34,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:49:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 569 transitions. [2023-12-24 17:49:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:49:34,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:49:34,714 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:49:34,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-12-24 17:49:34,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:49:34,924 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:49:34,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:49:34,925 INFO L85 PathProgramCache]: Analyzing trace with hash -963770681, now seen corresponding path program 1 times [2023-12-24 17:49:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:49:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32708967] [2023-12-24 17:49:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:49:34,926 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 [2023-12-24 17:49:34,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:49:34,927 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-12-24 17:49:34,928 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 (15)] Waiting until timeout for monitored process [2023-12-24 17:49:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:49:35,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 17:49:35,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:49:35,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:49:35,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:35,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:35,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:35,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:36,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:36,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:36,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 34 [2023-12-24 17:49:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:49:36,185 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:49:36,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:49:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32708967] [2023-12-24 17:49:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32708967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:49:36,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:49:36,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:49:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649235662] [2023-12-24 17:49:36,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:49:36,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:49:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:49:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:49:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:49:36,186 INFO L87 Difference]: Start difference. First operand 415 states and 569 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:49:37,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:49:37,835 INFO L93 Difference]: Finished difference Result 880 states and 1211 transitions. [2023-12-24 17:49:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:49:37,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2023-12-24 17:49:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:49:37,838 INFO L225 Difference]: With dead ends: 880 [2023-12-24 17:49:37,838 INFO L226 Difference]: Without dead ends: 466 [2023-12-24 17:49:37,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:49:37,839 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 302 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:49:37,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 340 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 17:49:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-24 17:49:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 415. [2023-12-24 17:49:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 361 states have (on average 1.3490304709141274) internal successors, (487), 364 states have internal predecessors, (487), 40 states have call successors, (40), 13 states have call predecessors, (40), 13 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-24 17:49:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 567 transitions. [2023-12-24 17:49:37,892 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 567 transitions. Word has length 146 [2023-12-24 17:49:37,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:49:37,892 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 567 transitions. [2023-12-24 17:49:37,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:49:37,893 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 567 transitions. [2023-12-24 17:49:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:49:37,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:49:37,894 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:49:37,902 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 (15)] Ended with exit code 0 [2023-12-24 17:49:38,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-12-24 17:49:38,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:49:38,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:49:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1356797691, now seen corresponding path program 1 times [2023-12-24 17:49:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:49:38,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807737654] [2023-12-24 17:49:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:49:38,101 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 [2023-12-24 17:49:38,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:49:38,102 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-12-24 17:49:38,104 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 (16)] Waiting until timeout for monitored process [2023-12-24 17:49:38,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:49:38,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 17:49:38,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:49:38,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:49:38,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:49:38,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:49:38,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:38,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:49:38,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:38,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:49:39,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:39,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 80 [2023-12-24 17:49:39,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:39,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 71 [2023-12-24 17:49:39,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:39,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 62 [2023-12-24 17:49:39,518 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 32 proven. 288 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 17:49:39,518 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:49:39,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:49:39,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807737654] [2023-12-24 17:49:39,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807737654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:49:39,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1991310272] [2023-12-24 17:49:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:49:39,818 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:49:39,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:49:39,819 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:49:39,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-24 17:49:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:49:41,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-24 17:49:41,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:49:41,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:49:42,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 17:49:43,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:43,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 17:49:43,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:43,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 17:49:43,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:43,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 78 [2023-12-24 17:49:44,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:44,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 81 [2023-12-24 17:49:45,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:45,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 181 treesize of output 91 [2023-12-24 17:49:45,341 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:45,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 193 treesize of output 85 [2023-12-24 17:49:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:49:45,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:49:45,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1991310272] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:49:45,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:49:45,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [14] total 31 [2023-12-24 17:49:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475468514] [2023-12-24 17:49:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:49:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 17:49:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:49:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 17:49:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2023-12-24 17:49:45,440 INFO L87 Difference]: Start difference. First operand 415 states and 567 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:49:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:49:55,577 INFO L93 Difference]: Finished difference Result 1347 states and 1833 transitions. [2023-12-24 17:49:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-24 17:49:55,578 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2023-12-24 17:49:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:49:55,580 INFO L225 Difference]: With dead ends: 1347 [2023-12-24 17:49:55,580 INFO L226 Difference]: Without dead ends: 933 [2023-12-24 17:49:55,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=460, Invalid=2732, Unknown=0, NotChecked=0, Total=3192 [2023-12-24 17:49:55,582 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 1137 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:49:55,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1341 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-24 17:49:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-12-24 17:49:55,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 815. [2023-12-24 17:49:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 725 states have (on average 1.3503448275862069) internal successors, (979), 733 states have internal predecessors, (979), 67 states have call successors, (67), 22 states have call predecessors, (67), 22 states have return successors, (67), 59 states have call predecessors, (67), 67 states have call successors, (67) [2023-12-24 17:49:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1113 transitions. [2023-12-24 17:49:55,627 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1113 transitions. Word has length 146 [2023-12-24 17:49:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:49:55,627 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1113 transitions. [2023-12-24 17:49:55,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 22 states have internal predecessors, (65), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:49:55,627 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1113 transitions. [2023-12-24 17:49:55,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:49:55,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:49:55,629 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:49:55,637 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 (16)] Forceful destruction successful, exit code 0 [2023-12-24 17:49:55,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2023-12-24 17:49:56,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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=3,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:49:56,037 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:49:56,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:49:56,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1205333266, now seen corresponding path program 1 times [2023-12-24 17:49:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:49:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388270057] [2023-12-24 17:49:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:49:56,038 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 [2023-12-24 17:49:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:49:56,039 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-12-24 17:49:56,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-24 17:49:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:49:56,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 17:49:56,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:49:56,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-12-24 17:49:56,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 17:49:56,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 17:49:56,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 17:49:56,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 17:49:56,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 17:49:56,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 36 [2023-12-24 17:49:56,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 36 [2023-12-24 17:49:56,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:56,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 46 [2023-12-24 17:49:57,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:57,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 59 [2023-12-24 17:49:57,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:57,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 62 [2023-12-24 17:49:57,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:57,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 65 [2023-12-24 17:49:57,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:57,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 65 [2023-12-24 17:49:57,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:57,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 25 [2023-12-24 17:49:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 425 proven. 18 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-12-24 17:49:57,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:49:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:49:57,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:49:57,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388270057] [2023-12-24 17:49:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388270057] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:49:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:49:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 17:49:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329780516] [2023-12-24 17:49:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:49:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:49:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:49:57,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:49:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:49:57,912 INFO L87 Difference]: Start difference. First operand 815 states and 1113 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:49:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:49:58,575 INFO L93 Difference]: Finished difference Result 2008 states and 2757 transitions. [2023-12-24 17:49:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:49:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:49:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:49:58,579 INFO L225 Difference]: With dead ends: 2008 [2023-12-24 17:49:58,579 INFO L226 Difference]: Without dead ends: 1194 [2023-12-24 17:49:58,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:49:58,581 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 170 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:49:58,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 519 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:49:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-12-24 17:49:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 832. [2023-12-24 17:49:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 724 states have (on average 1.324585635359116) internal successors, (959), 732 states have internal predecessors, (959), 79 states have call successors, (79), 28 states have call predecessors, (79), 28 states have return successors, (79), 71 states have call predecessors, (79), 79 states have call successors, (79) [2023-12-24 17:49:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1117 transitions. [2023-12-24 17:49:58,634 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1117 transitions. Word has length 146 [2023-12-24 17:49:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:49:58,634 INFO L495 AbstractCegarLoop]: Abstraction has 832 states and 1117 transitions. [2023-12-24 17:49:58,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:49:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1117 transitions. [2023-12-24 17:49:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:49:58,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:49:58,635 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:49:58,646 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 (18)] Forceful destruction successful, exit code 0 [2023-12-24 17:49:58,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-12-24 17:49:58,844 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:49:58,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:49:58,844 INFO L85 PathProgramCache]: Analyzing trace with hash -727914128, now seen corresponding path program 1 times [2023-12-24 17:49:58,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:49:58,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934079670] [2023-12-24 17:49:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:49:58,845 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 [2023-12-24 17:49:58,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:49:58,846 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-12-24 17:49:58,847 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 (19)] Waiting until timeout for monitored process [2023-12-24 17:49:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:49:59,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 17:49:59,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:49:59,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-12-24 17:49:59,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 17:49:59,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2023-12-24 17:49:59,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-24 17:49:59,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-24 17:49:59,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 37 [2023-12-24 17:49:59,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-24 17:49:59,904 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 49 [2023-12-24 17:49:59,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:49:59,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 59 [2023-12-24 17:50:00,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:00,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 62 [2023-12-24 17:50:00,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:00,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 62 [2023-12-24 17:50:00,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:00,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 63 [2023-12-24 17:50:00,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:00,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 63 [2023-12-24 17:50:00,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:00,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 23 [2023-12-24 17:50:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 451 proven. 18 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-12-24 17:50:00,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:00,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:00,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934079670] [2023-12-24 17:50:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934079670] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2023-12-24 17:50:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004364943] [2023-12-24 17:50:00,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:50:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:50:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:50:00,937 INFO L87 Difference]: Start difference. First operand 832 states and 1117 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:01,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:01,700 INFO L93 Difference]: Finished difference Result 1675 states and 2236 transitions. [2023-12-24 17:50:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:50:01,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:50:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:01,704 INFO L225 Difference]: With dead ends: 1675 [2023-12-24 17:50:01,704 INFO L226 Difference]: Without dead ends: 848 [2023-12-24 17:50:01,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:50:01,705 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 178 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:01,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 378 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-24 17:50:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-12-24 17:50:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 595. [2023-12-24 17:50:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 520 states have (on average 1.3076923076923077) internal successors, (680), 524 states have internal predecessors, (680), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 47 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 17:50:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 782 transitions. [2023-12-24 17:50:01,742 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 782 transitions. Word has length 146 [2023-12-24 17:50:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:01,742 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 782 transitions. [2023-12-24 17:50:01,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:01,742 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 782 transitions. [2023-12-24 17:50:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:50:01,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:01,743 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:01,751 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 (19)] Ended with exit code 0 [2023-12-24 17:50:01,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-12-24 17:50:01,952 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:01,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:01,953 INFO L85 PathProgramCache]: Analyzing trace with hash -576449703, now seen corresponding path program 1 times [2023-12-24 17:50:01,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:01,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938347625] [2023-12-24 17:50:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:01,953 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 [2023-12-24 17:50:01,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:01,954 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-12-24 17:50:01,955 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 (20)] Waiting until timeout for monitored process [2023-12-24 17:50:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:02,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 17:50:02,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:02,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:02,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:50:02,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:02,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:50:02,879 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:02,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 71 [2023-12-24 17:50:03,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:03,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 62 [2023-12-24 17:50:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 16 proven. 260 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 17:50:03,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:03,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938347625] [2023-12-24 17:50:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938347625] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:03,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-12-24 17:50:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523350792] [2023-12-24 17:50:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:50:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:50:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:50:03,289 INFO L87 Difference]: Start difference. First operand 595 states and 782 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:04,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:04,681 INFO L93 Difference]: Finished difference Result 1614 states and 2133 transitions. [2023-12-24 17:50:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:50:04,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:50:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:04,684 INFO L225 Difference]: With dead ends: 1614 [2023-12-24 17:50:04,684 INFO L226 Difference]: Without dead ends: 1020 [2023-12-24 17:50:04,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:50:04,701 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 189 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:04,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 287 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 17:50:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2023-12-24 17:50:04,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 695. [2023-12-24 17:50:04,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 620 states have (on average 1.314516129032258) internal successors, (815), 624 states have internal predecessors, (815), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 47 states have call predecessors, (51), 51 states have call successors, (51) [2023-12-24 17:50:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 917 transitions. [2023-12-24 17:50:04,791 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 917 transitions. Word has length 146 [2023-12-24 17:50:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:04,791 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 917 transitions. [2023-12-24 17:50:04,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 917 transitions. [2023-12-24 17:50:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:50:04,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:04,793 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:04,810 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 (20)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:05,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-12-24 17:50:05,007 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:05,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash -710463209, now seen corresponding path program 1 times [2023-12-24 17:50:05,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298224093] [2023-12-24 17:50:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:05,008 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 [2023-12-24 17:50:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:05,009 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-12-24 17:50:05,010 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 (21)] Waiting until timeout for monitored process [2023-12-24 17:50:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:05,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 17:50:05,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:05,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:05,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:05,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:50:05,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:50:05,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:05,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 71 [2023-12-24 17:50:06,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:06,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 192 treesize of output 104 [2023-12-24 17:50:06,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:06,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 192 treesize of output 95 [2023-12-24 17:50:06,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:06,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 227 treesize of output 77 [2023-12-24 17:50:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 24 proven. 260 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 17:50:06,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:07,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298224093] [2023-12-24 17:50:07,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298224093] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:07,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:07,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2023-12-24 17:50:07,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163498667] [2023-12-24 17:50:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:07,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:50:07,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:07,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:50:07,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:50:07,205 INFO L87 Difference]: Start difference. First operand 695 states and 917 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:09,562 INFO L93 Difference]: Finished difference Result 1767 states and 2332 transitions. [2023-12-24 17:50:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:50:09,563 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:50:09,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:09,566 INFO L225 Difference]: With dead ends: 1767 [2023-12-24 17:50:09,566 INFO L226 Difference]: Without dead ends: 1073 [2023-12-24 17:50:09,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 17:50:09,567 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 521 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:09,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 969 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-24 17:50:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2023-12-24 17:50:09,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 903. [2023-12-24 17:50:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 797 states have (on average 1.3111668757841908) internal successors, (1045), 805 states have internal predecessors, (1045), 73 states have call successors, (73), 32 states have call predecessors, (73), 32 states have return successors, (73), 65 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 17:50:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1191 transitions. [2023-12-24 17:50:09,626 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1191 transitions. Word has length 146 [2023-12-24 17:50:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:09,627 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1191 transitions. [2023-12-24 17:50:09,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1191 transitions. [2023-12-24 17:50:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:50:09,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:09,628 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:09,636 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 (21)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-12-24 17:50:09,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:09,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash -317436199, now seen corresponding path program 1 times [2023-12-24 17:50:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:09,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163391708] [2023-12-24 17:50:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:09,839 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 [2023-12-24 17:50:09,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:09,840 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-12-24 17:50:09,842 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 (22)] Waiting until timeout for monitored process [2023-12-24 17:50:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:10,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:50:10,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:10,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:10,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:10,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:50:10,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:50:10,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:10,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 58 [2023-12-24 17:50:10,820 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:10,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 58 [2023-12-24 17:50:10,870 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:10,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 58 [2023-12-24 17:50:10,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:10,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 58 [2023-12-24 17:50:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 17:50:10,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:11,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:11,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163391708] [2023-12-24 17:50:11,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163391708] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:11,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:11,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2023-12-24 17:50:11,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239748599] [2023-12-24 17:50:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:11,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:50:11,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:11,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:50:11,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:50:11,289 INFO L87 Difference]: Start difference. First operand 903 states and 1191 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:12,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:12,702 INFO L93 Difference]: Finished difference Result 1849 states and 2445 transitions. [2023-12-24 17:50:12,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:50:12,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-24 17:50:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:12,705 INFO L225 Difference]: With dead ends: 1849 [2023-12-24 17:50:12,705 INFO L226 Difference]: Without dead ends: 947 [2023-12-24 17:50:12,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:50:12,706 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 145 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:12,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 473 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 17:50:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-12-24 17:50:12,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 899. [2023-12-24 17:50:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 793 states have (on average 1.3102143757881464) internal successors, (1039), 801 states have internal predecessors, (1039), 73 states have call successors, (73), 32 states have call predecessors, (73), 32 states have return successors, (73), 65 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 17:50:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1185 transitions. [2023-12-24 17:50:12,779 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1185 transitions. Word has length 146 [2023-12-24 17:50:12,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:12,780 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1185 transitions. [2023-12-24 17:50:12,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:12,780 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1185 transitions. [2023-12-24 17:50:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:50:12,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:12,781 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:12,790 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 (22)] Ended with exit code 0 [2023-12-24 17:50:12,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-12-24 17:50:12,990 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:12,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:12,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1774194297, now seen corresponding path program 1 times [2023-12-24 17:50:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:12,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954945252] [2023-12-24 17:50:12,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:12,991 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 [2023-12-24 17:50:12,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:12,992 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-12-24 17:50:12,993 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 (23)] Waiting until timeout for monitored process [2023-12-24 17:50:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:13,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:50:13,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 17:50:13,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:50:13,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:13,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954945252] [2023-12-24 17:50:13,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954945252] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:50:13,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:50:13,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:50:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013736210] [2023-12-24 17:50:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:50:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:50:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:50:13,266 INFO L87 Difference]: Start difference. First operand 899 states and 1185 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:50:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:13,350 INFO L93 Difference]: Finished difference Result 1807 states and 2384 transitions. [2023-12-24 17:50:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:50:13,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2023-12-24 17:50:13,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:13,353 INFO L225 Difference]: With dead ends: 1807 [2023-12-24 17:50:13,353 INFO L226 Difference]: Without dead ends: 909 [2023-12-24 17:50:13,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:50:13,354 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 7 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:13,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 486 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:50:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-12-24 17:50:13,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 901. [2023-12-24 17:50:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 795 states have (on average 1.3081761006289307) internal successors, (1040), 803 states have internal predecessors, (1040), 73 states have call successors, (73), 32 states have call predecessors, (73), 32 states have return successors, (73), 65 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 17:50:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1186 transitions. [2023-12-24 17:50:13,411 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1186 transitions. Word has length 146 [2023-12-24 17:50:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:13,411 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1186 transitions. [2023-12-24 17:50:13,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:50:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1186 transitions. [2023-12-24 17:50:13,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 17:50:13,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:13,413 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:13,420 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 (23)] Ended with exit code 0 [2023-12-24 17:50:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-12-24 17:50:13,620 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:13,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:13,620 INFO L85 PathProgramCache]: Analyzing trace with hash -752856377, now seen corresponding path program 1 times [2023-12-24 17:50:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369986551] [2023-12-24 17:50:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:13,621 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 [2023-12-24 17:50:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:13,622 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-12-24 17:50:13,623 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 (24)] Waiting until timeout for monitored process [2023-12-24 17:50:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:13,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-24 17:50:13,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2023-12-24 17:50:13,893 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:50:13,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369986551] [2023-12-24 17:50:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369986551] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:50:13,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:50:13,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-24 17:50:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477980518] [2023-12-24 17:50:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:13,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-24 17:50:13,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-24 17:50:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-24 17:50:13,894 INFO L87 Difference]: Start difference. First operand 901 states and 1186 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:50:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:13,975 INFO L93 Difference]: Finished difference Result 1808 states and 2382 transitions. [2023-12-24 17:50:13,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:50:13,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2023-12-24 17:50:13,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:13,979 INFO L225 Difference]: With dead ends: 1808 [2023-12-24 17:50:13,979 INFO L226 Difference]: Without dead ends: 908 [2023-12-24 17:50:13,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:50:13,980 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 7 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:13,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 486 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:50:13,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2023-12-24 17:50:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 901. [2023-12-24 17:50:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 795 states have (on average 1.3056603773584905) internal successors, (1038), 803 states have internal predecessors, (1038), 73 states have call successors, (73), 32 states have call predecessors, (73), 32 states have return successors, (73), 65 states have call predecessors, (73), 73 states have call successors, (73) [2023-12-24 17:50:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1184 transitions. [2023-12-24 17:50:14,045 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1184 transitions. Word has length 146 [2023-12-24 17:50:14,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:14,045 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1184 transitions. [2023-12-24 17:50:14,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:50:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1184 transitions. [2023-12-24 17:50:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:14,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:14,047 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:14,070 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 (24)] Ended with exit code 0 [2023-12-24 17:50:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-12-24 17:50:14,254 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:14,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -443760693, now seen corresponding path program 1 times [2023-12-24 17:50:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029202466] [2023-12-24 17:50:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:14,255 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 [2023-12-24 17:50:14,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:14,256 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-12-24 17:50:14,291 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 (25)] Waiting until timeout for monitored process [2023-12-24 17:50:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:14,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:50:14,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:14,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:14,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:50:15,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:15,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 54 [2023-12-24 17:50:15,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:15,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 64 [2023-12-24 17:50:15,529 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:15,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 58 [2023-12-24 17:50:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 68 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:50:15,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:16,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029202466] [2023-12-24 17:50:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029202466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1578283969] [2023-12-24 17:50:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:16,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:50:16,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:50:16,101 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:50:16,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-24 17:50:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:17,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 17:50:17,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:17,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 17:50:17,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:50:18,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 17:50:18,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:18,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 69 [2023-12-24 17:50:19,068 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:19,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 72 [2023-12-24 17:50:19,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:19,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 69 [2023-12-24 17:50:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 52 proven. 272 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:50:19,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:19,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1578283969] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:19,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:50:19,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2023-12-24 17:50:19,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945317745] [2023-12-24 17:50:19,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:50:19,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-24 17:50:19,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:19,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-24 17:50:19,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1298, Unknown=0, NotChecked=0, Total=1560 [2023-12-24 17:50:19,852 INFO L87 Difference]: Start difference. First operand 901 states and 1184 transitions. Second operand has 29 states, 27 states have (on average 4.222222222222222) internal successors, (114), 25 states have internal predecessors, (114), 9 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 17:50:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:27,032 INFO L93 Difference]: Finished difference Result 2292 states and 3003 transitions. [2023-12-24 17:50:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 17:50:27,033 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.222222222222222) internal successors, (114), 25 states have internal predecessors, (114), 9 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) Word has length 148 [2023-12-24 17:50:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:27,037 INFO L225 Difference]: With dead ends: 2292 [2023-12-24 17:50:27,037 INFO L226 Difference]: Without dead ends: 1392 [2023-12-24 17:50:27,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=716, Invalid=2824, Unknown=0, NotChecked=0, Total=3540 [2023-12-24 17:50:27,039 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 824 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 253 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 4297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:27,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1171 Invalid, 4297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 4042 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 17:50:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2023-12-24 17:50:27,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 929. [2023-12-24 17:50:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 814 states have (on average 1.2985257985257985) internal successors, (1057), 822 states have internal predecessors, (1057), 78 states have call successors, (78), 36 states have call predecessors, (78), 36 states have return successors, (78), 70 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-24 17:50:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1213 transitions. [2023-12-24 17:50:27,147 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1213 transitions. Word has length 148 [2023-12-24 17:50:27,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:27,147 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1213 transitions. [2023-12-24 17:50:27,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.222222222222222) internal successors, (114), 25 states have internal predecessors, (114), 9 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 8 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 17:50:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1213 transitions. [2023-12-24 17:50:27,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:27,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:27,149 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:27,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:27,366 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 (25)] Ended with exit code 0 [2023-12-24 17:50:27,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,25 /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 [2023-12-24 17:50:27,564 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:27,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:27,565 INFO L85 PathProgramCache]: Analyzing trace with hash 235511561, now seen corresponding path program 1 times [2023-12-24 17:50:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083895608] [2023-12-24 17:50:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:27,565 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 [2023-12-24 17:50:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:27,566 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-12-24 17:50:27,570 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 (27)] Waiting until timeout for monitored process [2023-12-24 17:50:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:27,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:50:27,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 263 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-24 17:50:27,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:50:27,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:27,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083895608] [2023-12-24 17:50:27,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083895608] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:50:27,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:50:27,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:50:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154792095] [2023-12-24 17:50:27,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:27,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:50:27,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:50:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:50:27,863 INFO L87 Difference]: Start difference. First operand 929 states and 1213 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:50:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:28,043 INFO L93 Difference]: Finished difference Result 1816 states and 2367 transitions. [2023-12-24 17:50:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:50:28,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2023-12-24 17:50:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:28,048 INFO L225 Difference]: With dead ends: 1816 [2023-12-24 17:50:28,048 INFO L226 Difference]: Without dead ends: 884 [2023-12-24 17:50:28,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:50:28,050 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 7 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:28,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 668 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:50:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-12-24 17:50:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 845. [2023-12-24 17:50:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 740 states have (on average 1.3027027027027027) internal successors, (964), 747 states have internal predecessors, (964), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:50:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1108 transitions. [2023-12-24 17:50:28,136 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1108 transitions. Word has length 148 [2023-12-24 17:50:28,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:28,136 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1108 transitions. [2023-12-24 17:50:28,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:50:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1108 transitions. [2023-12-24 17:50:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:28,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:28,138 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:28,152 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 (27)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:28,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-12-24 17:50:28,346 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:28,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:28,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1064824789, now seen corresponding path program 1 times [2023-12-24 17:50:28,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:28,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12298076] [2023-12-24 17:50:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:28,347 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 [2023-12-24 17:50:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:28,357 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-12-24 17:50:28,416 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 (28)] Waiting until timeout for monitored process [2023-12-24 17:50:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:28,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 17:50:28,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:28,711 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:50:28,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12298076] [2023-12-24 17:50:28,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12298076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:50:28,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:50:28,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:50:28,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246601725] [2023-12-24 17:50:28,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:28,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:50:28,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:28,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:50:28,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:50:28,712 INFO L87 Difference]: Start difference. First operand 845 states and 1108 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:28,782 INFO L93 Difference]: Finished difference Result 1691 states and 2219 transitions. [2023-12-24 17:50:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:50:28,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 17:50:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:28,785 INFO L225 Difference]: With dead ends: 1691 [2023-12-24 17:50:28,785 INFO L226 Difference]: Without dead ends: 847 [2023-12-24 17:50:28,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:50:28,786 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:28,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 317 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:50:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2023-12-24 17:50:28,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2023-12-24 17:50:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 742 states have (on average 1.3018867924528301) internal successors, (966), 749 states have internal predecessors, (966), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:50:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1110 transitions. [2023-12-24 17:50:28,844 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1110 transitions. Word has length 148 [2023-12-24 17:50:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:28,844 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1110 transitions. [2023-12-24 17:50:28,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1110 transitions. [2023-12-24 17:50:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:28,845 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:28,846 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:28,855 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 (28)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:29,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-12-24 17:50:29,060 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:29,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:29,061 INFO L85 PathProgramCache]: Analyzing trace with hash -363224915, now seen corresponding path program 1 times [2023-12-24 17:50:29,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:29,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451434912] [2023-12-24 17:50:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:29,061 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 [2023-12-24 17:50:29,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:29,062 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-12-24 17:50:29,063 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 (29)] Waiting until timeout for monitored process [2023-12-24 17:50:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:29,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 17:50:29,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:29,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:29,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:50:29,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:50:29,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:29,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:50:29,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:29,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:50:30,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:30,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 80 [2023-12-24 17:50:30,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:30,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 71 [2023-12-24 17:50:30,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:30,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 62 [2023-12-24 17:50:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 32 proven. 288 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 17:50:30,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:30,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451434912] [2023-12-24 17:50:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451434912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1269129497] [2023-12-24 17:50:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:30,759 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:50:30,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:50:30,760 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:50:30,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-12-24 17:50:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:32,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-24 17:50:32,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:32,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:50:33,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 17:50:33,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:33,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 17:50:34,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:34,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 17:50:34,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:34,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 63 [2023-12-24 17:50:35,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:35,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 90 [2023-12-24 17:50:35,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:35,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 190 treesize of output 100 [2023-12-24 17:50:36,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:36,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 193 treesize of output 85 [2023-12-24 17:50:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:50:36,451 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:50:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1269129497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:50:36,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [14] total 30 [2023-12-24 17:50:36,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299823164] [2023-12-24 17:50:36,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-24 17:50:36,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:36,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-24 17:50:36,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:50:36,453 INFO L87 Difference]: Start difference. First operand 847 states and 1110 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:50:44,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:44,884 INFO L93 Difference]: Finished difference Result 2407 states and 3148 transitions. [2023-12-24 17:50:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-24 17:50:44,885 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2023-12-24 17:50:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:44,889 INFO L225 Difference]: With dead ends: 2407 [2023-12-24 17:50:44,889 INFO L226 Difference]: Without dead ends: 1561 [2023-12-24 17:50:44,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=433, Invalid=2537, Unknown=0, NotChecked=0, Total=2970 [2023-12-24 17:50:44,894 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 917 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 3463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:44,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 1582 Invalid, 3463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-12-24 17:50:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-12-24 17:50:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 901. [2023-12-24 17:50:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 796 states have (on average 1.2977386934673367) internal successors, (1033), 803 states have internal predecessors, (1033), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:50:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1177 transitions. [2023-12-24 17:50:44,981 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1177 transitions. Word has length 148 [2023-12-24 17:50:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:44,981 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1177 transitions. [2023-12-24 17:50:44,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 21 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:50:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1177 transitions. [2023-12-24 17:50:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:44,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:44,982 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:44,997 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 (29)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:45,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:45,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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=3,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:50:45,396 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:45,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash 417123073, now seen corresponding path program 1 times [2023-12-24 17:50:45,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:45,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724424699] [2023-12-24 17:50:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:45,397 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 [2023-12-24 17:50:45,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:45,398 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-12-24 17:50:45,399 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 (31)] Waiting until timeout for monitored process [2023-12-24 17:50:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:45,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 17:50:45,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:45,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:46,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:50:46,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:46,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 67 [2023-12-24 17:50:46,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:46,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 77 [2023-12-24 17:50:46,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:46,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 80 [2023-12-24 17:50:47,157 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:47,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 71 [2023-12-24 17:50:47,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:47,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 71 [2023-12-24 17:50:47,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:47,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 62 [2023-12-24 17:50:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 72 proven. 260 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-12-24 17:50:47,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:47,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724424699] [2023-12-24 17:50:47,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724424699] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:47,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:47,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 18 [2023-12-24 17:50:47,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050692224] [2023-12-24 17:50:47,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:50:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:50:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:50:47,796 INFO L87 Difference]: Start difference. First operand 901 states and 1177 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:49,113 INFO L93 Difference]: Finished difference Result 2050 states and 2685 transitions. [2023-12-24 17:50:49,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:50:49,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 17:50:49,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:49,116 INFO L225 Difference]: With dead ends: 2050 [2023-12-24 17:50:49,116 INFO L226 Difference]: Without dead ends: 1150 [2023-12-24 17:50:49,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:50:49,137 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 210 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 483 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 17:50:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-24 17:50:49,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 932. [2023-12-24 17:50:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 827 states have (on average 1.2998790810157195) internal successors, (1075), 834 states have internal predecessors, (1075), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:50:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1219 transitions. [2023-12-24 17:50:49,199 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1219 transitions. Word has length 148 [2023-12-24 17:50:49,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:49,199 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1219 transitions. [2023-12-24 17:50:49,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:49,200 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1219 transitions. [2023-12-24 17:50:49,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:49,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:49,201 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:49,232 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 (31)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-12-24 17:50:49,409 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:49,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 810150083, now seen corresponding path program 1 times [2023-12-24 17:50:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:49,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083522187] [2023-12-24 17:50:49,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:49,410 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 [2023-12-24 17:50:49,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:49,411 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-12-24 17:50:49,413 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 (32)] Waiting until timeout for monitored process [2023-12-24 17:50:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:49,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 17:50:49,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:49,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:49,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:50,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:50:50,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:50,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-24 17:50:50,494 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:50,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 60 [2023-12-24 17:50:50,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:50,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 117 [2023-12-24 17:50:50,967 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:50,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 202 treesize of output 108 [2023-12-24 17:50:51,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:51,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 264 treesize of output 90 [2023-12-24 17:50:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 32 proven. 260 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-12-24 17:50:51,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:52,107 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:52,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:52,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083522187] [2023-12-24 17:50:52,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083522187] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:52,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:52,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 22 [2023-12-24 17:50:52,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012345010] [2023-12-24 17:50:52,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:52,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:50:52,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:50:52,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-12-24 17:50:52,109 INFO L87 Difference]: Start difference. First operand 932 states and 1219 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:55,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:50:55,616 INFO L93 Difference]: Finished difference Result 1935 states and 2527 transitions. [2023-12-24 17:50:55,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:50:55,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 17:50:55,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:50:55,619 INFO L225 Difference]: With dead ends: 1935 [2023-12-24 17:50:55,619 INFO L226 Difference]: Without dead ends: 1004 [2023-12-24 17:50:55,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 273 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2023-12-24 17:50:55,620 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 230 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:50:55,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1262 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 603 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 17:50:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-24 17:50:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 936. [2023-12-24 17:50:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 831 states have (on average 1.2984356197352587) internal successors, (1079), 838 states have internal predecessors, (1079), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:50:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1223 transitions. [2023-12-24 17:50:55,681 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1223 transitions. Word has length 148 [2023-12-24 17:50:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:50:55,681 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1223 transitions. [2023-12-24 17:50:55,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:50:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1223 transitions. [2023-12-24 17:50:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:50:55,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:50:55,682 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:50:55,690 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 (32)] Forceful destruction successful, exit code 0 [2023-12-24 17:50:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-12-24 17:50:55,891 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:50:55,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:50:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash 283109567, now seen corresponding path program 1 times [2023-12-24 17:50:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:50:55,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433704550] [2023-12-24 17:50:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:50:55,892 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 [2023-12-24 17:50:55,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:50:55,893 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-12-24 17:50:55,895 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 (33)] Waiting until timeout for monitored process [2023-12-24 17:50:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:50:56,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-24 17:50:56,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:50:56,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:50:56,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:50:56,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:56,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:50:56,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:56,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:50:56,862 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:56,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 80 [2023-12-24 17:50:57,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:57,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 80 [2023-12-24 17:50:57,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:50:57,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 176 treesize of output 62 [2023-12-24 17:50:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 16 proven. 260 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 17:50:57,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:50:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:50:58,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:50:58,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433704550] [2023-12-24 17:50:58,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433704550] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:50:58,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:50:58,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 23 [2023-12-24 17:50:58,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144400376] [2023-12-24 17:50:58,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:50:58,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:50:58,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:50:58,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:50:58,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:50:58,047 INFO L87 Difference]: Start difference. First operand 936 states and 1223 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:51:00,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-24 17:51:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:05,073 INFO L93 Difference]: Finished difference Result 2388 states and 3103 transitions. [2023-12-24 17:51:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:51:05,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 17:51:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:05,077 INFO L225 Difference]: With dead ends: 2388 [2023-12-24 17:51:05,077 INFO L226 Difference]: Without dead ends: 1453 [2023-12-24 17:51:05,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 17:51:05,080 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 458 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:05,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1389 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 906 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-12-24 17:51:05,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2023-12-24 17:51:05,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1116. [2023-12-24 17:51:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 976 states have (on average 1.2889344262295082) internal successors, (1258), 985 states have internal predecessors, (1258), 97 states have call successors, (97), 42 states have call predecessors, (97), 42 states have return successors, (97), 88 states have call predecessors, (97), 97 states have call successors, (97) [2023-12-24 17:51:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1452 transitions. [2023-12-24 17:51:05,179 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1452 transitions. Word has length 148 [2023-12-24 17:51:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:05,179 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1452 transitions. [2023-12-24 17:51:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:51:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1452 transitions. [2023-12-24 17:51:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:51:05,180 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:05,180 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:05,189 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 (33)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-12-24 17:51:05,388 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:05,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash 676136577, now seen corresponding path program 1 times [2023-12-24 17:51:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281878992] [2023-12-24 17:51:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:05,389 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 [2023-12-24 17:51:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:05,390 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-12-24 17:51:05,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-12-24 17:51:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:05,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-24 17:51:05,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:05,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:06,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:51:06,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:06,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 77 [2023-12-24 17:51:06,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:06,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 90 [2023-12-24 17:51:06,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:06,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 160 treesize of output 93 [2023-12-24 17:51:07,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:07,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 85 [2023-12-24 17:51:07,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:07,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 85 [2023-12-24 17:51:07,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:07,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 187 treesize of output 67 [2023-12-24 17:51:07,714 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 80 proven. 260 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:51:07,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:51:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:51:08,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:08,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281878992] [2023-12-24 17:51:08,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281878992] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:51:08,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:51:08,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 19 [2023-12-24 17:51:08,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474810643] [2023-12-24 17:51:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:08,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:51:08,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:08,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:51:08,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:51:08,110 INFO L87 Difference]: Start difference. First operand 1116 states and 1452 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:51:09,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:09,337 INFO L93 Difference]: Finished difference Result 2278 states and 2956 transitions. [2023-12-24 17:51:09,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:51:09,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 17:51:09,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:09,355 INFO L225 Difference]: With dead ends: 2278 [2023-12-24 17:51:09,355 INFO L226 Difference]: Without dead ends: 1163 [2023-12-24 17:51:09,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:51:09,364 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 177 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:09,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 403 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 17:51:09,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2023-12-24 17:51:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 904. [2023-12-24 17:51:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 799 states have (on average 1.2941176470588236) internal successors, (1034), 806 states have internal predecessors, (1034), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:51:09,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1178 transitions. [2023-12-24 17:51:09,430 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1178 transitions. Word has length 148 [2023-12-24 17:51:09,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:09,430 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1178 transitions. [2023-12-24 17:51:09,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:51:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1178 transitions. [2023-12-24 17:51:09,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:51:09,431 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:09,431 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:09,442 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 (34)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-12-24 17:51:09,642 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 654510981, now seen corresponding path program 1 times [2023-12-24 17:51:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36494709] [2023-12-24 17:51:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:09,643 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 [2023-12-24 17:51:09,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:09,644 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-12-24 17:51:09,660 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 (35)] Waiting until timeout for monitored process [2023-12-24 17:51:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:09,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:51:09,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 296 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-12-24 17:51:09,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:51:09,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36494709] [2023-12-24 17:51:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36494709] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:51:09,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:51:09,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:51:09,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857775138] [2023-12-24 17:51:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:09,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:51:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:51:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:51:09,941 INFO L87 Difference]: Start difference. First operand 904 states and 1178 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:51:10,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:10,132 INFO L93 Difference]: Finished difference Result 1845 states and 2395 transitions. [2023-12-24 17:51:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:51:10,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2023-12-24 17:51:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:10,134 INFO L225 Difference]: With dead ends: 1845 [2023-12-24 17:51:10,135 INFO L226 Difference]: Without dead ends: 938 [2023-12-24 17:51:10,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:51:10,136 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 7 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:10,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 660 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 17:51:10,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-24 17:51:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 904. [2023-12-24 17:51:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 799 states have (on average 1.2916145181476846) internal successors, (1032), 806 states have internal predecessors, (1032), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:51:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1176 transitions. [2023-12-24 17:51:10,198 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1176 transitions. Word has length 148 [2023-12-24 17:51:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:10,199 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1176 transitions. [2023-12-24 17:51:10,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:51:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1176 transitions. [2023-12-24 17:51:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:51:10,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:10,200 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:10,211 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 (35)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:10,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 [2023-12-24 17:51:10,407 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:10,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1621861635, now seen corresponding path program 1 times [2023-12-24 17:51:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:10,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201968138] [2023-12-24 17:51:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:10,408 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 [2023-12-24 17:51:10,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:10,409 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-12-24 17:51:10,411 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 (36)] Waiting until timeout for monitored process [2023-12-24 17:51:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:10,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:51:10,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:10,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:10,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 17:51:10,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 21 [2023-12-24 17:51:10,914 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:51:10,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:51:10,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:10,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201968138] [2023-12-24 17:51:10,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201968138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:51:10,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:51:10,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:51:10,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225678024] [2023-12-24 17:51:10,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:10,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:51:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:51:10,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:51:10,916 INFO L87 Difference]: Start difference. First operand 904 states and 1176 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:51:12,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:12,576 INFO L93 Difference]: Finished difference Result 2441 states and 3191 transitions. [2023-12-24 17:51:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 17:51:12,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 148 [2023-12-24 17:51:12,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:12,580 INFO L225 Difference]: With dead ends: 2441 [2023-12-24 17:51:12,581 INFO L226 Difference]: Without dead ends: 1538 [2023-12-24 17:51:12,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:51:12,582 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 331 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:12,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1561 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 17:51:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-12-24 17:51:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1000. [2023-12-24 17:51:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 895 states have (on average 1.293854748603352) internal successors, (1158), 902 states have internal predecessors, (1158), 72 states have call successors, (72), 32 states have call predecessors, (72), 32 states have return successors, (72), 65 states have call predecessors, (72), 72 states have call successors, (72) [2023-12-24 17:51:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1302 transitions. [2023-12-24 17:51:12,665 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1302 transitions. Word has length 148 [2023-12-24 17:51:12,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:12,665 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1302 transitions. [2023-12-24 17:51:12,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:51:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1302 transitions. [2023-12-24 17:51:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:51:12,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:12,667 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:12,675 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 (36)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:12,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 [2023-12-24 17:51:12,869 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:12,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1228834625, now seen corresponding path program 1 times [2023-12-24 17:51:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:12,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660958160] [2023-12-24 17:51:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:12,870 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 [2023-12-24 17:51:12,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:12,871 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-12-24 17:51:12,872 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 (37)] Waiting until timeout for monitored process [2023-12-24 17:51:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:13,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:51:13,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:13,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:13,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:13,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2023-12-24 17:51:13,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:13,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 35 [2023-12-24 17:51:13,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:13,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 59 [2023-12-24 17:51:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 17:51:13,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:51:13,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660958160] [2023-12-24 17:51:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660958160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:51:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:51:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:51:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101335168] [2023-12-24 17:51:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:13,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:51:13,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:51:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:51:13,960 INFO L87 Difference]: Start difference. First operand 1000 states and 1302 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:51:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:17,391 INFO L93 Difference]: Finished difference Result 2846 states and 3710 transitions. [2023-12-24 17:51:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:51:17,392 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2023-12-24 17:51:17,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:17,396 INFO L225 Difference]: With dead ends: 2846 [2023-12-24 17:51:17,397 INFO L226 Difference]: Without dead ends: 1847 [2023-12-24 17:51:17,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:51:17,398 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 398 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:17,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 517 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-24 17:51:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2023-12-24 17:51:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1467. [2023-12-24 17:51:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1306 states have (on average 1.2970903522205206) internal successors, (1694), 1318 states have internal predecessors, (1694), 112 states have call successors, (112), 48 states have call predecessors, (112), 48 states have return successors, (112), 100 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-24 17:51:17,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 1918 transitions. [2023-12-24 17:51:17,507 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 1918 transitions. Word has length 148 [2023-12-24 17:51:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:17,507 INFO L495 AbstractCegarLoop]: Abstraction has 1467 states and 1918 transitions. [2023-12-24 17:51:17,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 9 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:51:17,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 1918 transitions. [2023-12-24 17:51:17,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:51:17,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:17,509 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:17,517 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 (37)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 [2023-12-24 17:51:17,717 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:17,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1487848129, now seen corresponding path program 1 times [2023-12-24 17:51:17,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:17,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285373651] [2023-12-24 17:51:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:17,718 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 [2023-12-24 17:51:17,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:17,719 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-12-24 17:51:17,720 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 (38)] Waiting until timeout for monitored process [2023-12-24 17:51:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:18,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:51:18,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:18,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:18,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:18,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2023-12-24 17:51:18,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:18,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 35 [2023-12-24 17:51:18,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:18,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 59 [2023-12-24 17:51:18,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:18,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 59 [2023-12-24 17:51:18,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:18,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 59 [2023-12-24 17:51:18,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:18,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 41 [2023-12-24 17:51:19,039 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 17:51:19,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:51:19,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:19,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285373651] [2023-12-24 17:51:19,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285373651] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:51:19,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:51:19,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:51:19,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096795833] [2023-12-24 17:51:19,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:19,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:51:19,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:51:19,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:51:19,041 INFO L87 Difference]: Start difference. First operand 1467 states and 1918 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:51:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:22,811 INFO L93 Difference]: Finished difference Result 3334 states and 4356 transitions. [2023-12-24 17:51:22,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:51:22,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2023-12-24 17:51:22,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:22,816 INFO L225 Difference]: With dead ends: 3334 [2023-12-24 17:51:22,816 INFO L226 Difference]: Without dead ends: 1868 [2023-12-24 17:51:22,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:51:22,817 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 479 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:22,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 610 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-24 17:51:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-12-24 17:51:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1511. [2023-12-24 17:51:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1350 states have (on average 1.297037037037037) internal successors, (1751), 1362 states have internal predecessors, (1751), 112 states have call successors, (112), 48 states have call predecessors, (112), 48 states have return successors, (112), 100 states have call predecessors, (112), 112 states have call successors, (112) [2023-12-24 17:51:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 1975 transitions. [2023-12-24 17:51:22,927 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 1975 transitions. Word has length 148 [2023-12-24 17:51:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:22,927 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 1975 transitions. [2023-12-24 17:51:22,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:51:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 1975 transitions. [2023-12-24 17:51:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-24 17:51:22,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:22,929 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:22,942 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 (38)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:23,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 [2023-12-24 17:51:23,137 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:23,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:23,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1094821119, now seen corresponding path program 1 times [2023-12-24 17:51:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:23,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484389984] [2023-12-24 17:51:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:23,138 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 [2023-12-24 17:51:23,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:23,139 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-12-24 17:51:23,140 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 (39)] Waiting until timeout for monitored process [2023-12-24 17:51:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:23,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:51:23,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:23,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:23,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 17:51:23,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:23,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 64 [2023-12-24 17:51:24,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:24,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 67 [2023-12-24 17:51:24,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:24,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 154 treesize of output 58 [2023-12-24 17:51:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 52 proven. 260 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-12-24 17:51:24,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:51:24,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:24,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484389984] [2023-12-24 17:51:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484389984] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:51:24,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1249778150] [2023-12-24 17:51:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:24,940 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:51:24,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:51:24,941 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:51:24,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-24 17:51:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:26,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 17:51:26,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:26,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 17:51:26,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:51:27,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 17:51:27,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:27,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 69 [2023-12-24 17:51:28,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:28,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 72 [2023-12-24 17:51:28,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:28,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 69 [2023-12-24 17:51:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 64 proven. 260 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:51:28,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:51:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1249778150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:51:28,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:51:28,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2023-12-24 17:51:28,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430295289] [2023-12-24 17:51:28,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:51:28,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 17:51:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 17:51:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1016, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 17:51:28,815 INFO L87 Difference]: Start difference. First operand 1511 states and 1975 transitions. Second operand has 28 states, 26 states have (on average 4.269230769230769) internal successors, (111), 24 states have internal predecessors, (111), 8 states have call successors, (36), 7 states have call predecessors, (36), 8 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 17:51:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:37,430 INFO L93 Difference]: Finished difference Result 3606 states and 4682 transitions. [2023-12-24 17:51:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 17:51:37,432 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.269230769230769) internal successors, (111), 24 states have internal predecessors, (111), 8 states have call successors, (36), 7 states have call predecessors, (36), 8 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 148 [2023-12-24 17:51:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:37,436 INFO L225 Difference]: With dead ends: 3606 [2023-12-24 17:51:37,436 INFO L226 Difference]: Without dead ends: 2096 [2023-12-24 17:51:37,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 17:51:37,438 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1027 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 4719 mSolverCounterSat, 289 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 5010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 4719 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:37,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1411 Invalid, 5010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 4719 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-12-24 17:51:37,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2023-12-24 17:51:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 863. [2023-12-24 17:51:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 777 states have (on average 1.2972972972972974) internal successors, (1008), 781 states have internal predecessors, (1008), 56 states have call successors, (56), 29 states have call predecessors, (56), 29 states have return successors, (56), 52 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-24 17:51:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1120 transitions. [2023-12-24 17:51:37,515 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1120 transitions. Word has length 148 [2023-12-24 17:51:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:37,515 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1120 transitions. [2023-12-24 17:51:37,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.269230769230769) internal successors, (111), 24 states have internal predecessors, (111), 8 states have call successors, (36), 7 states have call predecessors, (36), 8 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 17:51:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1120 transitions. [2023-12-24 17:51:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:51:37,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:37,517 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:37,543 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 (39)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:37,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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=3,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:51:37,933 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:37,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash -149249968, now seen corresponding path program 1 times [2023-12-24 17:51:37,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:37,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184882237] [2023-12-24 17:51:37,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:37,934 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 [2023-12-24 17:51:37,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:37,935 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-12-24 17:51:37,936 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 (41)] Waiting until timeout for monitored process [2023-12-24 17:51:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:38,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 17:51:38,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:38,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:51:38,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2023-12-24 17:51:38,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:38,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 28 [2023-12-24 17:51:38,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:38,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 28 [2023-12-24 17:51:38,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:38,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 28 [2023-12-24 17:51:38,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:38,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2023-12-24 17:51:39,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:39,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2023-12-24 17:51:39,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:39,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 41 [2023-12-24 17:51:39,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:39,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 41 [2023-12-24 17:51:39,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:39,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 20 [2023-12-24 17:51:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 403 proven. 60 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-24 17:51:39,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:51:39,658 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 75 proven. 66 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2023-12-24 17:51:39,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:39,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184882237] [2023-12-24 17:51:39,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184882237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:51:39,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:51:39,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-12-24 17:51:39,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058868058] [2023-12-24 17:51:39,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:51:39,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 17:51:39,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:39,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 17:51:39,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-12-24 17:51:39,660 INFO L87 Difference]: Start difference. First operand 863 states and 1120 transitions. Second operand has 26 states, 20 states have (on average 6.05) internal successors, (121), 25 states have internal predecessors, (121), 12 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-24 17:51:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:41,395 INFO L93 Difference]: Finished difference Result 1715 states and 2214 transitions. [2023-12-24 17:51:41,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-24 17:51:41,396 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 6.05) internal successors, (121), 25 states have internal predecessors, (121), 12 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 12 states have call successors, (28) Word has length 149 [2023-12-24 17:51:41,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:41,397 INFO L225 Difference]: With dead ends: 1715 [2023-12-24 17:51:41,398 INFO L226 Difference]: Without dead ends: 853 [2023-12-24 17:51:41,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=368, Invalid=1114, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 17:51:41,406 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 221 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:41,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 440 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 17:51:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-12-24 17:51:41,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 629. [2023-12-24 17:51:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 560 states have (on average 1.2625) internal successors, (707), 562 states have internal predecessors, (707), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:51:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 791 transitions. [2023-12-24 17:51:41,463 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 791 transitions. Word has length 149 [2023-12-24 17:51:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:41,463 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 791 transitions. [2023-12-24 17:51:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 6.05) internal successors, (121), 25 states have internal predecessors, (121), 12 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (28), 7 states have call predecessors, (28), 12 states have call successors, (28) [2023-12-24 17:51:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 791 transitions. [2023-12-24 17:51:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:51:41,464 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:41,464 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:41,475 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 (41)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:41,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /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 [2023-12-24 17:51:41,673 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:41,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash -326069035, now seen corresponding path program 1 times [2023-12-24 17:51:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483938859] [2023-12-24 17:51:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:41,694 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 [2023-12-24 17:51:41,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:41,695 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-12-24 17:51:41,696 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 (42)] Waiting until timeout for monitored process [2023-12-24 17:51:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:42,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 17:51:42,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:42,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:42,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:51:42,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:51:42,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:42,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-24 17:51:43,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:43,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 60 [2023-12-24 17:51:43,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:43,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 93 [2023-12-24 17:51:43,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:43,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 66 [2023-12-24 17:51:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 17:51:43,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:51:43,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:43,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483938859] [2023-12-24 17:51:43,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483938859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:51:43,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:51:43,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-24 17:51:43,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079655689] [2023-12-24 17:51:43,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:43,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-24 17:51:43,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:43,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-24 17:51:43,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:51:43,936 INFO L87 Difference]: Start difference. First operand 629 states and 791 transitions. Second operand has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 17:51:50,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:51:52,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:51:52,009 INFO L93 Difference]: Finished difference Result 1553 states and 1957 transitions. [2023-12-24 17:51:52,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 17:51:52,011 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 149 [2023-12-24 17:51:52,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:51:52,012 INFO L225 Difference]: With dead ends: 1553 [2023-12-24 17:51:52,012 INFO L226 Difference]: Without dead ends: 925 [2023-12-24 17:51:52,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2023-12-24 17:51:52,013 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 657 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 98 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:51:52,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 1215 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2072 Invalid, 4 Unknown, 0 Unchecked, 7.2s Time] [2023-12-24 17:51:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-12-24 17:51:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 575. [2023-12-24 17:51:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 506 states have (on average 1.2490118577075098) internal successors, (632), 508 states have internal predecessors, (632), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:51:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 716 transitions. [2023-12-24 17:51:52,075 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 716 transitions. Word has length 149 [2023-12-24 17:51:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:51:52,075 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 716 transitions. [2023-12-24 17:51:52,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 17 states have internal predecessors, (71), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 17:51:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 716 transitions. [2023-12-24 17:51:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-24 17:51:52,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:51:52,076 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:51:52,085 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 (42)] Forceful destruction successful, exit code 0 [2023-12-24 17:51:52,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /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 [2023-12-24 17:51:52,285 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:51:52,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:51:52,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2013502027, now seen corresponding path program 1 times [2023-12-24 17:51:52,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:51:52,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565998761] [2023-12-24 17:51:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:51:52,286 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 [2023-12-24 17:51:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:51:52,287 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-12-24 17:51:52,287 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 (43)] Waiting until timeout for monitored process [2023-12-24 17:51:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:51:52,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:51:52,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:51:52,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:51:53,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:51:53,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:51:53,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:53,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 47 [2023-12-24 17:51:53,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:53,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 80 [2023-12-24 17:51:53,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:51:53,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 206 treesize of output 74 [2023-12-24 17:51:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-12-24 17:51:53,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:51:53,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:51:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565998761] [2023-12-24 17:51:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565998761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:51:53,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:51:53,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 17:51:53,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250684268] [2023-12-24 17:51:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:51:53,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 17:51:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:51:53,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 17:51:53,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:51:53,983 INFO L87 Difference]: Start difference. First operand 575 states and 716 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:52:00,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:52:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:52:01,829 INFO L93 Difference]: Finished difference Result 1686 states and 2121 transitions. [2023-12-24 17:52:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 17:52:01,830 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2023-12-24 17:52:01,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:52:01,831 INFO L225 Difference]: With dead ends: 1686 [2023-12-24 17:52:01,832 INFO L226 Difference]: Without dead ends: 1112 [2023-12-24 17:52:01,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:52:01,833 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 392 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:52:01,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 721 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-12-24 17:52:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-12-24 17:52:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 633. [2023-12-24 17:52:01,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 564 states have (on average 1.2624113475177305) internal successors, (712), 566 states have internal predecessors, (712), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:52:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 796 transitions. [2023-12-24 17:52:01,892 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 796 transitions. Word has length 149 [2023-12-24 17:52:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:52:01,892 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 796 transitions. [2023-12-24 17:52:01,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:52:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 796 transitions. [2023-12-24 17:52:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:52:01,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:52:01,894 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:52:01,919 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 (43)] Forceful destruction successful, exit code 0 [2023-12-24 17:52:02,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /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 [2023-12-24 17:52:02,102 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:52:02,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:52:02,103 INFO L85 PathProgramCache]: Analyzing trace with hash -823975204, now seen corresponding path program 1 times [2023-12-24 17:52:02,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:52:02,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897331785] [2023-12-24 17:52:02,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:02,104 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 [2023-12-24 17:52:02,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:52:02,129 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-12-24 17:52:02,132 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 (44)] Waiting until timeout for monitored process [2023-12-24 17:52:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:02,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:52:02,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:02,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 22 [2023-12-24 17:52:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:52:02,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:52:02,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:52:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897331785] [2023-12-24 17:52:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897331785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:52:02,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:52:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:52:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446332060] [2023-12-24 17:52:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:52:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:52:02,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:52:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:52:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:52:02,639 INFO L87 Difference]: Start difference. First operand 633 states and 796 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:52:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:52:03,803 INFO L93 Difference]: Finished difference Result 1598 states and 2032 transitions. [2023-12-24 17:52:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:52:03,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2023-12-24 17:52:03,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:52:03,805 INFO L225 Difference]: With dead ends: 1598 [2023-12-24 17:52:03,806 INFO L226 Difference]: Without dead ends: 966 [2023-12-24 17:52:03,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:52:03,807 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 208 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:52:03,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 366 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 529 Invalid, 1 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 17:52:03,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-12-24 17:52:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 663. [2023-12-24 17:52:03,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 594 states have (on average 1.265993265993266) internal successors, (752), 596 states have internal predecessors, (752), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:52:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 836 transitions. [2023-12-24 17:52:03,864 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 836 transitions. Word has length 150 [2023-12-24 17:52:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:52:03,865 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 836 transitions. [2023-12-24 17:52:03,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:52:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 836 transitions. [2023-12-24 17:52:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:52:03,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:52:03,866 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:52:03,874 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 (44)] Forceful destruction successful, exit code 0 [2023-12-24 17:52:04,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /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 [2023-12-24 17:52:04,074 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:52:04,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:52:04,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1641623654, now seen corresponding path program 1 times [2023-12-24 17:52:04,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:52:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953044198] [2023-12-24 17:52:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:04,075 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 [2023-12-24 17:52:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:52:04,079 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-12-24 17:52:04,080 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 (45)] Waiting until timeout for monitored process [2023-12-24 17:52:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:04,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:52:04,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:04,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:04,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:52:04,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:52:04,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:04,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-24 17:52:05,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:05,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 60 [2023-12-24 17:52:05,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:05,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 60 [2023-12-24 17:52:05,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:05,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 54 [2023-12-24 17:52:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 17:52:05,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:52:05,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:52:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953044198] [2023-12-24 17:52:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953044198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:52:05,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:52:05,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:52:05,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083906738] [2023-12-24 17:52:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:52:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:52:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:52:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:52:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:52:05,488 INFO L87 Difference]: Start difference. First operand 663 states and 836 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 17:52:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:52:07,433 INFO L93 Difference]: Finished difference Result 1572 states and 1989 transitions. [2023-12-24 17:52:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:52:07,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 150 [2023-12-24 17:52:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:52:07,435 INFO L225 Difference]: With dead ends: 1572 [2023-12-24 17:52:07,435 INFO L226 Difference]: Without dead ends: 910 [2023-12-24 17:52:07,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:52:07,438 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 392 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:52:07,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 350 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 908 Invalid, 2 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 17:52:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-24 17:52:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 675. [2023-12-24 17:52:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 606 states have (on average 1.2607260726072607) internal successors, (764), 608 states have internal predecessors, (764), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:52:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 848 transitions. [2023-12-24 17:52:07,522 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 848 transitions. Word has length 150 [2023-12-24 17:52:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:52:07,522 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 848 transitions. [2023-12-24 17:52:07,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 17:52:07,522 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 848 transitions. [2023-12-24 17:52:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:52:07,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:52:07,523 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:52:07,531 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 (45)] Ended with exit code 0 [2023-12-24 17:52:07,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /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 [2023-12-24 17:52:07,731 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:52:07,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:52:07,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2053851015, now seen corresponding path program 1 times [2023-12-24 17:52:07,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:52:07,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747700125] [2023-12-24 17:52:07,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:07,732 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 [2023-12-24 17:52:07,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:52:07,734 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-12-24 17:52:07,738 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 (46)] Waiting until timeout for monitored process [2023-12-24 17:52:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:08,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 17:52:08,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:08,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:08,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:08,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:08,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:08,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:08,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 17:52:08,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-24 17:52:08,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 21 [2023-12-24 17:52:08,269 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:52:08,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:52:08,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:52:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747700125] [2023-12-24 17:52:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747700125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:52:08,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:52:08,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:52:08,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221039247] [2023-12-24 17:52:08,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:52:08,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:52:08,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:52:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:52:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:52:08,271 INFO L87 Difference]: Start difference. First operand 675 states and 848 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:52:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:52:09,298 INFO L93 Difference]: Finished difference Result 1500 states and 1897 transitions. [2023-12-24 17:52:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:52:09,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2023-12-24 17:52:09,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:52:09,300 INFO L225 Difference]: With dead ends: 1500 [2023-12-24 17:52:09,300 INFO L226 Difference]: Without dead ends: 826 [2023-12-24 17:52:09,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:52:09,301 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 136 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:52:09,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 466 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-24 17:52:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2023-12-24 17:52:09,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 675. [2023-12-24 17:52:09,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 606 states have (on average 1.2574257425742574) internal successors, (762), 608 states have internal predecessors, (762), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:52:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 846 transitions. [2023-12-24 17:52:09,361 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 846 transitions. Word has length 150 [2023-12-24 17:52:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:52:09,361 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 846 transitions. [2023-12-24 17:52:09,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:52:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 846 transitions. [2023-12-24 17:52:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:52:09,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:52:09,362 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:52:09,370 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 (46)] Forceful destruction successful, exit code 0 [2023-12-24 17:52:09,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /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 [2023-12-24 17:52:09,570 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:52:09,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:52:09,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1982102777, now seen corresponding path program 1 times [2023-12-24 17:52:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:52:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078572512] [2023-12-24 17:52:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:09,571 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 [2023-12-24 17:52:09,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:52:09,572 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-12-24 17:52:09,574 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 (47)] Waiting until timeout for monitored process [2023-12-24 17:52:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:09,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 17:52:09,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:09,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:09,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:09,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:52:10,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:52:10,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-12-24 17:52:10,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:10,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 35 [2023-12-24 17:52:10,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:10,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 35 [2023-12-24 17:52:10,160 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:10,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 26 [2023-12-24 17:52:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-12-24 17:52:10,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:52:10,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:52:10,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078572512] [2023-12-24 17:52:10,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078572512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:52:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:52:10,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:52:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426389544] [2023-12-24 17:52:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:52:10,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:52:10,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:52:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:52:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:52:10,190 INFO L87 Difference]: Start difference. First operand 675 states and 846 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:52:11,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:52:11,821 INFO L93 Difference]: Finished difference Result 1454 states and 1825 transitions. [2023-12-24 17:52:11,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:52:11,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 150 [2023-12-24 17:52:11,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:52:11,823 INFO L225 Difference]: With dead ends: 1454 [2023-12-24 17:52:11,823 INFO L226 Difference]: Without dead ends: 780 [2023-12-24 17:52:11,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:52:11,826 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 290 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:52:11,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 265 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 505 Invalid, 3 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 17:52:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2023-12-24 17:52:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 675. [2023-12-24 17:52:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 606 states have (on average 1.2541254125412542) internal successors, (760), 608 states have internal predecessors, (760), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:52:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 844 transitions. [2023-12-24 17:52:11,889 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 844 transitions. Word has length 150 [2023-12-24 17:52:11,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:52:11,889 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 844 transitions. [2023-12-24 17:52:11,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:52:11,889 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 844 transitions. [2023-12-24 17:52:11,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-24 17:52:11,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:52:11,890 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:52:11,898 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 (47)] Forceful destruction successful, exit code 0 [2023-12-24 17:52:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /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 [2023-12-24 17:52:12,099 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:52:12,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:52:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1919837509, now seen corresponding path program 1 times [2023-12-24 17:52:12,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:52:12,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343451413] [2023-12-24 17:52:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:12,100 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 [2023-12-24 17:52:12,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:52:12,112 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-12-24 17:52:12,114 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 (48)] Waiting until timeout for monitored process [2023-12-24 17:52:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:12,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 17:52:12,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:12,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:12,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:52:12,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2023-12-24 17:52:13,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:13,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 45 [2023-12-24 17:52:13,294 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:13,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 45 [2023-12-24 17:52:13,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:13,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 79 [2023-12-24 17:52:13,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:13,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 70 [2023-12-24 17:52:13,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:13,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 175 treesize of output 61 [2023-12-24 17:52:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 309 proven. 15 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:52:14,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:52:14,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:52:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343451413] [2023-12-24 17:52:14,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343451413] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:52:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1613559155] [2023-12-24 17:52:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:14,501 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:52:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:52:14,502 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:52:14,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2023-12-24 17:52:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:16,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-24 17:52:16,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:16,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 17:52:16,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:52:17,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 17:52:18,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:18,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 67 [2023-12-24 17:52:19,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:19,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 70 [2023-12-24 17:52:19,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:19,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 70 [2023-12-24 17:52:19,913 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:19,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 98 [2023-12-24 17:52:20,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:20,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 195 treesize of output 108 [2023-12-24 17:52:21,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:21,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 87 [2023-12-24 17:52:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 300 proven. 24 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:52:22,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:52:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:52:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1613559155] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:52:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:52:23,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18, 28] total 50 [2023-12-24 17:52:23,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155894926] [2023-12-24 17:52:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:52:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:52:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:52:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:52:23,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=2336, Unknown=0, NotChecked=0, Total=2756 [2023-12-24 17:52:23,093 INFO L87 Difference]: Start difference. First operand 675 states and 844 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:52:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:52:33,224 INFO L93 Difference]: Finished difference Result 1632 states and 2048 transitions. [2023-12-24 17:52:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 17:52:33,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 150 [2023-12-24 17:52:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:52:33,239 INFO L225 Difference]: With dead ends: 1632 [2023-12-24 17:52:33,239 INFO L226 Difference]: Without dead ends: 958 [2023-12-24 17:52:33,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1391 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=559, Invalid=3601, Unknown=0, NotChecked=0, Total=4160 [2023-12-24 17:52:33,256 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 565 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:52:33,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1032 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-12-24 17:52:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-24 17:52:33,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 677. [2023-12-24 17:52:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 608 states have (on average 1.256578947368421) internal successors, (764), 610 states have internal predecessors, (764), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:52:33,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 848 transitions. [2023-12-24 17:52:33,343 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 848 transitions. Word has length 150 [2023-12-24 17:52:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:52:33,344 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 848 transitions. [2023-12-24 17:52:33,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:52:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 848 transitions. [2023-12-24 17:52:33,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 17:52:33,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:52:33,346 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:52:33,356 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 (48)] Forceful destruction successful, exit code 0 [2023-12-24 17:52:33,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2023-12-24 17:52:33,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /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=3,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 17:52:33,762 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:52:33,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:52:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1756180177, now seen corresponding path program 1 times [2023-12-24 17:52:33,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:52:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920560933] [2023-12-24 17:52:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:33,763 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 [2023-12-24 17:52:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:52:33,764 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-12-24 17:52:33,765 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 (50)] Waiting until timeout for monitored process [2023-12-24 17:52:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:34,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-24 17:52:34,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:34,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:52:34,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2023-12-24 17:52:34,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:34,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 55 [2023-12-24 17:52:35,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:35,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 58 [2023-12-24 17:52:35,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:35,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 91 [2023-12-24 17:52:35,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:35,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 76 [2023-12-24 17:52:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 280 proven. 12 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-12-24 17:52:35,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:52:36,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:52:36,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920560933] [2023-12-24 17:52:36,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920560933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:52:36,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [380220311] [2023-12-24 17:52:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:52:36,649 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:52:36,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:52:36,650 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:52:36,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2023-12-24 17:52:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:52:38,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 17:52:38,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:52:38,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 17:52:38,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:52:39,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2023-12-24 17:52:40,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:40,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 69 [2023-12-24 17:52:40,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:40,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 80 [2023-12-24 17:52:40,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:52:40,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 83 [2023-12-24 17:52:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 68 proven. 272 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:52:41,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:52:43,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [380220311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:52:43,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:52:43,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2023-12-24 17:52:43,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345668856] [2023-12-24 17:52:43,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:52:43,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-24 17:52:43,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:52:43,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-24 17:52:43,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2084, Unknown=0, NotChecked=0, Total=2352 [2023-12-24 17:52:43,315 INFO L87 Difference]: Start difference. First operand 677 states and 848 transitions. Second operand has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 28 states have internal predecessors, (131), 9 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 17:53:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:04,145 INFO L93 Difference]: Finished difference Result 2285 states and 2858 transitions. [2023-12-24 17:53:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-24 17:53:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 28 states have internal predecessors, (131), 9 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) Word has length 151 [2023-12-24 17:53:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:04,148 INFO L225 Difference]: With dead ends: 2285 [2023-12-24 17:53:04,148 INFO L226 Difference]: Without dead ends: 1609 [2023-12-24 17:53:04,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2568 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=1335, Invalid=8565, Unknown=0, NotChecked=0, Total=9900 [2023-12-24 17:53:04,158 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1411 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 5640 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 6026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 5640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:04,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 1476 Invalid, 6026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 5640 Invalid, 0 Unknown, 0 Unchecked, 12.9s Time] [2023-12-24 17:53:04,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-12-24 17:53:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 671. [2023-12-24 17:53:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 602 states have (on average 1.255813953488372) internal successors, (756), 604 states have internal predecessors, (756), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 840 transitions. [2023-12-24 17:53:04,237 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 840 transitions. Word has length 151 [2023-12-24 17:53:04,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:04,238 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 840 transitions. [2023-12-24 17:53:04,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.225806451612903) internal successors, (131), 28 states have internal predecessors, (131), 9 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 9 states have call predecessors, (36), 9 states have call successors, (36) [2023-12-24 17:53:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 840 transitions. [2023-12-24 17:53:04,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 17:53:04,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:04,239 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:04,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:04,454 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 (50)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:04,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,50 /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 [2023-12-24 17:53:04,644 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:04,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:04,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1021858019, now seen corresponding path program 1 times [2023-12-24 17:53:04,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:04,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266475071] [2023-12-24 17:53:04,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:04,645 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 [2023-12-24 17:53:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:04,646 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-12-24 17:53:04,648 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 (52)] Waiting until timeout for monitored process [2023-12-24 17:53:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:05,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:53:05,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:05,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 31 [2023-12-24 17:53:05,554 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:53:05,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:53:05,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:05,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266475071] [2023-12-24 17:53:05,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266475071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:53:05,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:53:05,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 17:53:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439554604] [2023-12-24 17:53:05,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:53:05,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:53:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:53:05,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:53:05,556 INFO L87 Difference]: Start difference. First operand 671 states and 840 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:09,128 INFO L93 Difference]: Finished difference Result 1407 states and 1775 transitions. [2023-12-24 17:53:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:53:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 17:53:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:09,130 INFO L225 Difference]: With dead ends: 1407 [2023-12-24 17:53:09,130 INFO L226 Difference]: Without dead ends: 737 [2023-12-24 17:53:09,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:53:09,131 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 346 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:09,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 453 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 839 Invalid, 3 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 17:53:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2023-12-24 17:53:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 681. [2023-12-24 17:53:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 612 states have (on average 1.2516339869281046) internal successors, (766), 614 states have internal predecessors, (766), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 850 transitions. [2023-12-24 17:53:09,200 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 850 transitions. Word has length 151 [2023-12-24 17:53:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:09,200 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 850 transitions. [2023-12-24 17:53:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:09,201 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 850 transitions. [2023-12-24 17:53:09,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 17:53:09,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:09,202 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:09,209 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 (52)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:09,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /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 [2023-12-24 17:53:09,403 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:09,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1414885029, now seen corresponding path program 1 times [2023-12-24 17:53:09,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:09,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219847222] [2023-12-24 17:53:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:09,404 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 [2023-12-24 17:53:09,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:09,405 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-12-24 17:53:09,405 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 (53)] Waiting until timeout for monitored process [2023-12-24 17:53:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:09,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:53:09,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:09,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:53:09,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 52 [2023-12-24 17:53:10,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:10,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 74 [2023-12-24 17:53:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:53:10,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:53:10,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219847222] [2023-12-24 17:53:10,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219847222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:53:10,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:53:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 17:53:10,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74249849] [2023-12-24 17:53:10,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:53:10,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:53:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:10,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:53:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:53:10,131 INFO L87 Difference]: Start difference. First operand 681 states and 850 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:13,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:13,097 INFO L93 Difference]: Finished difference Result 1708 states and 2131 transitions. [2023-12-24 17:53:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 17:53:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 17:53:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:13,099 INFO L225 Difference]: With dead ends: 1708 [2023-12-24 17:53:13,099 INFO L226 Difference]: Without dead ends: 1028 [2023-12-24 17:53:13,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:53:13,100 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 239 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:13,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 806 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 17:53:13,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-12-24 17:53:13,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 835. [2023-12-24 17:53:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 766 states have (on average 1.2284595300261096) internal successors, (941), 768 states have internal predecessors, (941), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:13,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1025 transitions. [2023-12-24 17:53:13,185 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1025 transitions. Word has length 151 [2023-12-24 17:53:13,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:13,186 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1025 transitions. [2023-12-24 17:53:13,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:13,186 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1025 transitions. [2023-12-24 17:53:13,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 17:53:13,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:13,187 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:13,197 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 (53)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /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 [2023-12-24 17:53:13,398 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:13,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1729389373, now seen corresponding path program 1 times [2023-12-24 17:53:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:13,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833668818] [2023-12-24 17:53:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:13,399 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 [2023-12-24 17:53:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:13,413 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-12-24 17:53:13,427 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 (54)] Waiting until timeout for monitored process [2023-12-24 17:53:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:13,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-24 17:53:13,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:13,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:53:14,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:14,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2023-12-24 17:53:14,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:14,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 55 [2023-12-24 17:53:14,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:14,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 149 treesize of output 82 [2023-12-24 17:53:15,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:15,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 116 [2023-12-24 17:53:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 325 proven. 15 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:53:15,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:53:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:53:16,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:16,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833668818] [2023-12-24 17:53:16,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833668818] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:53:16,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:53:16,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 26 [2023-12-24 17:53:16,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439423423] [2023-12-24 17:53:16,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:53:16,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:53:16,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:53:16,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2023-12-24 17:53:16,619 INFO L87 Difference]: Start difference. First operand 835 states and 1025 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:22,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-24 17:53:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:31,394 INFO L93 Difference]: Finished difference Result 2217 states and 2727 transitions. [2023-12-24 17:53:31,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:53:31,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 17:53:31,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:31,397 INFO L225 Difference]: With dead ends: 2217 [2023-12-24 17:53:31,397 INFO L226 Difference]: Without dead ends: 1383 [2023-12-24 17:53:31,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-12-24 17:53:31,398 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 383 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:31,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 586 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 868 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2023-12-24 17:53:31,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-12-24 17:53:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 851. [2023-12-24 17:53:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 782 states have (on average 1.2340153452685423) internal successors, (965), 784 states have internal predecessors, (965), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1049 transitions. [2023-12-24 17:53:31,482 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1049 transitions. Word has length 151 [2023-12-24 17:53:31,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:31,483 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1049 transitions. [2023-12-24 17:53:31,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:31,483 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1049 transitions. [2023-12-24 17:53:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 17:53:31,484 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:31,484 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:31,492 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 (54)] Ended with exit code 0 [2023-12-24 17:53:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /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 [2023-12-24 17:53:31,688 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash -68968805, now seen corresponding path program 1 times [2023-12-24 17:53:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203754143] [2023-12-24 17:53:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:31,689 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 [2023-12-24 17:53:31,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:31,690 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2023-12-24 17:53:31,690 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 (55)] Waiting until timeout for monitored process [2023-12-24 17:53:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:32,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-24 17:53:32,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:32,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:53:32,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:32,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 42 [2023-12-24 17:53:32,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:32,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 55 [2023-12-24 17:53:33,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:33,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 58 [2023-12-24 17:53:33,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:33,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 92 [2023-12-24 17:53:33,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:33,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 185 treesize of output 65 [2023-12-24 17:53:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 325 proven. 15 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:53:34,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:53:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:53:34,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203754143] [2023-12-24 17:53:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203754143] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:53:34,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:53:34,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [20] total 28 [2023-12-24 17:53:34,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938760889] [2023-12-24 17:53:34,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:53:34,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:53:34,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:53:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-12-24 17:53:34,824 INFO L87 Difference]: Start difference. First operand 851 states and 1049 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:39,935 INFO L93 Difference]: Finished difference Result 2058 states and 2551 transitions. [2023-12-24 17:53:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-24 17:53:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 151 [2023-12-24 17:53:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:39,938 INFO L225 Difference]: With dead ends: 2058 [2023-12-24 17:53:39,938 INFO L226 Difference]: Without dead ends: 1208 [2023-12-24 17:53:39,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2023-12-24 17:53:39,939 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 506 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:39,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 918 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-24 17:53:39,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2023-12-24 17:53:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 841. [2023-12-24 17:53:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 772 states have (on average 1.2292746113989637) internal successors, (949), 774 states have internal predecessors, (949), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1033 transitions. [2023-12-24 17:53:40,014 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1033 transitions. Word has length 151 [2023-12-24 17:53:40,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:40,014 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1033 transitions. [2023-12-24 17:53:40,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:53:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1033 transitions. [2023-12-24 17:53:40,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-24 17:53:40,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:40,016 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:40,024 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 (55)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /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 [2023-12-24 17:53:40,224 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:40,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:40,225 INFO L85 PathProgramCache]: Analyzing trace with hash 149885913, now seen corresponding path program 1 times [2023-12-24 17:53:40,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:40,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863182801] [2023-12-24 17:53:40,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:40,226 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 [2023-12-24 17:53:40,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:40,227 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-12-24 17:53:40,228 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 (56)] Waiting until timeout for monitored process [2023-12-24 17:53:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:40,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:53:40,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:40,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:53:40,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:41,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:41,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:41,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:41,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:53:41,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 33 [2023-12-24 17:53:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 293 proven. 15 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:53:41,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:53:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-24 17:53:42,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863182801] [2023-12-24 17:53:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863182801] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:53:42,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:53:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2023-12-24 17:53:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005239399] [2023-12-24 17:53:42,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:53:42,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-24 17:53:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-24 17:53:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:53:42,086 INFO L87 Difference]: Start difference. First operand 841 states and 1033 transitions. Second operand has 21 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 6 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 17:53:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:46,801 INFO L93 Difference]: Finished difference Result 2463 states and 3020 transitions. [2023-12-24 17:53:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 17:53:46,802 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 6 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 6 states have call successors, (36) Word has length 151 [2023-12-24 17:53:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:46,804 INFO L225 Difference]: With dead ends: 2463 [2023-12-24 17:53:46,804 INFO L226 Difference]: Without dead ends: 1549 [2023-12-24 17:53:46,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=433, Invalid=1207, Unknown=0, NotChecked=0, Total=1640 [2023-12-24 17:53:46,805 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 738 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 219 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:46,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1035 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2814 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-12-24 17:53:46,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2023-12-24 17:53:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 759. [2023-12-24 17:53:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 690 states have (on average 1.2304347826086957) internal successors, (849), 692 states have internal predecessors, (849), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 933 transitions. [2023-12-24 17:53:46,880 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 933 transitions. Word has length 151 [2023-12-24 17:53:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:46,880 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 933 transitions. [2023-12-24 17:53:46,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 6.7368421052631575) internal successors, (128), 20 states have internal predecessors, (128), 6 states have call successors, (36), 4 states have call predecessors, (36), 5 states have return successors, (36), 4 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 17:53:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 933 transitions. [2023-12-24 17:53:46,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-24 17:53:46,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:46,881 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:46,889 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 (56)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:47,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /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 [2023-12-24 17:53:47,091 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:47,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:47,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2033516180, now seen corresponding path program 1 times [2023-12-24 17:53:47,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:47,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671076736] [2023-12-24 17:53:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:47,091 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 [2023-12-24 17:53:47,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:47,092 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2023-12-24 17:53:47,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-12-24 17:53:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:47,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 17:53:47,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:47,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:53:47,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:53:47,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:53:48,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:53:48,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:48,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 183 treesize of output 92 [2023-12-24 17:53:48,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:48,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 70 [2023-12-24 17:53:48,584 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-12-24 17:53:48,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:53:48,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:48,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671076736] [2023-12-24 17:53:48,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671076736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:53:48,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:53:48,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-24 17:53:48,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225372689] [2023-12-24 17:53:48,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:53:48,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 17:53:48,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:48,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 17:53:48,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:53:48,586 INFO L87 Difference]: Start difference. First operand 759 states and 933 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:53:54,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:54,191 INFO L93 Difference]: Finished difference Result 2035 states and 2496 transitions. [2023-12-24 17:53:54,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:53:54,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 152 [2023-12-24 17:53:54,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:54,194 INFO L225 Difference]: With dead ends: 2035 [2023-12-24 17:53:54,194 INFO L226 Difference]: Without dead ends: 1277 [2023-12-24 17:53:54,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:53:54,195 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 421 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:54,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 787 Invalid, 1772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-24 17:53:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-12-24 17:53:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 755. [2023-12-24 17:53:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 686 states have (on average 1.228862973760933) internal successors, (843), 688 states have internal predecessors, (843), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 927 transitions. [2023-12-24 17:53:54,307 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 927 transitions. Word has length 152 [2023-12-24 17:53:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:54,307 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 927 transitions. [2023-12-24 17:53:54,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-24 17:53:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 927 transitions. [2023-12-24 17:53:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 17:53:54,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:54,308 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:54,317 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 (57)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:54,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /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 [2023-12-24 17:53:54,517 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:54,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:54,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1603442912, now seen corresponding path program 1 times [2023-12-24 17:53:54,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:54,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347348505] [2023-12-24 17:53:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:54,519 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 [2023-12-24 17:53:54,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:54,520 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2023-12-24 17:53:54,520 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 (58)] Waiting until timeout for monitored process [2023-12-24 17:53:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:54,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:53:54,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:54,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:53:55,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 17:53:55,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:55,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:53:55,195 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:55,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:53:55,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:55,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 40 [2023-12-24 17:53:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:53:55,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:53:55,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:53:55,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347348505] [2023-12-24 17:53:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347348505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:53:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:53:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 17:53:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804629497] [2023-12-24 17:53:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:53:55,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 17:53:55,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:53:55,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 17:53:55,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:53:55,388 INFO L87 Difference]: Start difference. First operand 755 states and 927 transitions. Second operand has 14 states, 12 states have (on average 6.0) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:53:56,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:53:56,977 INFO L93 Difference]: Finished difference Result 1412 states and 1723 transitions. [2023-12-24 17:53:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 17:53:56,978 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.0) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 153 [2023-12-24 17:53:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:53:56,993 INFO L225 Difference]: With dead ends: 1412 [2023-12-24 17:53:56,993 INFO L226 Difference]: Without dead ends: 1410 [2023-12-24 17:53:56,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-12-24 17:53:56,994 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 356 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:53:56,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 480 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 17:53:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2023-12-24 17:53:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1180. [2023-12-24 17:53:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1111 states have (on average 1.234923492349235) internal successors, (1372), 1113 states have internal predecessors, (1372), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:53:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1456 transitions. [2023-12-24 17:53:57,079 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1456 transitions. Word has length 153 [2023-12-24 17:53:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:53:57,079 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1456 transitions. [2023-12-24 17:53:57,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.0) internal successors, (72), 13 states have internal predecessors, (72), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:53:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1456 transitions. [2023-12-24 17:53:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 17:53:57,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:53:57,081 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:53:57,091 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 (58)] Forceful destruction successful, exit code 0 [2023-12-24 17:53:57,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /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 [2023-12-24 17:53:57,291 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:53:57,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:53:57,292 INFO L85 PathProgramCache]: Analyzing trace with hash -839683989, now seen corresponding path program 1 times [2023-12-24 17:53:57,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:53:57,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225576484] [2023-12-24 17:53:57,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:53:57,292 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 [2023-12-24 17:53:57,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:53:57,293 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2023-12-24 17:53:57,295 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 (59)] Waiting until timeout for monitored process [2023-12-24 17:53:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:53:57,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-24 17:53:57,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:53:57,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:53:58,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:53:58,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 44 [2023-12-24 17:53:58,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:58,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 57 [2023-12-24 17:53:58,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:58,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 84 [2023-12-24 17:53:59,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:59,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 202 treesize of output 117 [2023-12-24 17:53:59,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:53:59,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 253 treesize of output 123 [2023-12-24 17:54:01,146 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:01,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 237 treesize of output 81 [2023-12-24 17:54:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 17:54:01,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:54:01,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:54:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225576484] [2023-12-24 17:54:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225576484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:54:01,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:54:01,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-24 17:54:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845455123] [2023-12-24 17:54:01,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:54:01,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-24 17:54:01,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:54:01,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-24 17:54:01,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2023-12-24 17:54:01,300 INFO L87 Difference]: Start difference. First operand 1180 states and 1456 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 17:54:11,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:54:11,452 INFO L93 Difference]: Finished difference Result 3206 states and 3946 transitions. [2023-12-24 17:54:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 17:54:11,454 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 153 [2023-12-24 17:54:11,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:54:11,456 INFO L225 Difference]: With dead ends: 3206 [2023-12-24 17:54:11,457 INFO L226 Difference]: Without dead ends: 2027 [2023-12-24 17:54:11,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2023-12-24 17:54:11,458 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1125 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 137 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 2256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:54:11,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 819 Invalid, 2256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 2117 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2023-12-24 17:54:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2023-12-24 17:54:11,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1268. [2023-12-24 17:54:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 1199 states have (on average 1.2276897414512093) internal successors, (1472), 1201 states have internal predecessors, (1472), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:54:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1556 transitions. [2023-12-24 17:54:11,594 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1556 transitions. Word has length 153 [2023-12-24 17:54:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:54:11,594 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1556 transitions. [2023-12-24 17:54:11,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 states have internal predecessors, (75), 4 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-12-24 17:54:11,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1556 transitions. [2023-12-24 17:54:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 17:54:11,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:54:11,596 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:54:11,607 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 (59)] Ended with exit code 0 [2023-12-24 17:54:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /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 [2023-12-24 17:54:11,804 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:54:11,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:54:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash 377789143, now seen corresponding path program 1 times [2023-12-24 17:54:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:54:11,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30514394] [2023-12-24 17:54:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:54:11,806 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 [2023-12-24 17:54:11,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:54:11,807 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2023-12-24 17:54:11,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-12-24 17:54:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:54:12,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-24 17:54:12,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:54:12,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:12,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 34 [2023-12-24 17:54:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:54:12,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:54:12,384 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:54:12,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30514394] [2023-12-24 17:54:12,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30514394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:54:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:54:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:54:12,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034678463] [2023-12-24 17:54:12,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:54:12,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:54:12,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:54:12,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:54:12,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:54:12,385 INFO L87 Difference]: Start difference. First operand 1268 states and 1556 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:54:13,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:54:13,986 INFO L93 Difference]: Finished difference Result 2640 states and 3259 transitions. [2023-12-24 17:54:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:54:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 153 [2023-12-24 17:54:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:54:13,989 INFO L225 Difference]: With dead ends: 2640 [2023-12-24 17:54:13,989 INFO L226 Difference]: Without dead ends: 1373 [2023-12-24 17:54:13,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:54:13,990 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 303 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:54:13,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 893 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 17:54:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2023-12-24 17:54:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1296. [2023-12-24 17:54:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1227 states have (on average 1.2290138549307252) internal successors, (1508), 1229 states have internal predecessors, (1508), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:54:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1592 transitions. [2023-12-24 17:54:14,078 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1592 transitions. Word has length 153 [2023-12-24 17:54:14,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:54:14,078 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1592 transitions. [2023-12-24 17:54:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:54:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1592 transitions. [2023-12-24 17:54:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-24 17:54:14,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:54:14,079 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:54:14,087 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 (60)] Ended with exit code 0 [2023-12-24 17:54:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /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 [2023-12-24 17:54:14,287 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:54:14,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:54:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash 722859699, now seen corresponding path program 1 times [2023-12-24 17:54:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:54:14,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894668046] [2023-12-24 17:54:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:54:14,288 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 [2023-12-24 17:54:14,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:54:14,289 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2023-12-24 17:54:14,293 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 (61)] Waiting until timeout for monitored process [2023-12-24 17:54:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:54:14,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 17:54:14,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:54:14,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:54:15,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:54:15,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:54:15,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 32 [2023-12-24 17:54:15,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 65 [2023-12-24 17:54:15,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:15,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 56 [2023-12-24 17:54:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 4 proven. 272 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2023-12-24 17:54:15,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:54:15,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:54:15,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894668046] [2023-12-24 17:54:15,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894668046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:54:15,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1885483971] [2023-12-24 17:54:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:54:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:54:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:54:15,804 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:54:15,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2023-12-24 17:54:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:54:18,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-24 17:54:18,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:54:18,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 17:54:18,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:54:19,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2023-12-24 17:54:21,961 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:21,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 59 [2023-12-24 17:54:22,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:22,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 67 [2023-12-24 17:54:23,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:23,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 70 [2023-12-24 17:54:24,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:54:24,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 91 [2023-12-24 17:54:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 316 proven. 24 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:54:25,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:54:28,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1885483971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:54:28,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:54:28,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26] total 38 [2023-12-24 17:54:28,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900038585] [2023-12-24 17:54:28,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:54:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-24 17:54:28,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:54:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-24 17:54:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2162, Unknown=0, NotChecked=0, Total=2550 [2023-12-24 17:54:28,050 INFO L87 Difference]: Start difference. First operand 1296 states and 1592 transitions. Second operand has 39 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 17:55:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:19,282 INFO L93 Difference]: Finished difference Result 6343 states and 7799 transitions. [2023-12-24 17:55:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-24 17:55:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) Word has length 153 [2023-12-24 17:55:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:19,289 INFO L225 Difference]: With dead ends: 6343 [2023-12-24 17:55:19,289 INFO L226 Difference]: Without dead ends: 5048 [2023-12-24 17:55:19,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4484 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=1994, Invalid=12768, Unknown=0, NotChecked=0, Total=14762 [2023-12-24 17:55:19,291 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 1442 mSDsluCounter, 2075 mSDsCounter, 0 mSdLazyCounter, 7568 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 7979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 7568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:19,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2232 Invalid, 7979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [411 Valid, 7568 Invalid, 0 Unknown, 0 Unchecked, 38.4s Time] [2023-12-24 17:55:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2023-12-24 17:55:19,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 1390. [2023-12-24 17:55:19,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1310 states have (on average 1.2305343511450382) internal successors, (1612), 1312 states have internal predecessors, (1612), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 17:55:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1708 transitions. [2023-12-24 17:55:19,416 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1708 transitions. Word has length 153 [2023-12-24 17:55:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:19,416 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 1708 transitions. [2023-12-24 17:55:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 3.6666666666666665) internal successors, (132), 35 states have internal predecessors, (132), 8 states have call successors, (36), 8 states have call predecessors, (36), 8 states have return successors, (36), 6 states have call predecessors, (36), 8 states have call successors, (36) [2023-12-24 17:55:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1708 transitions. [2023-12-24 17:55:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 17:55:19,418 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:19,418 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:19,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (62)] Ended with exit code 0 [2023-12-24 17:55:19,639 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 (61)] Forceful destruction successful, exit code 0 [2023-12-24 17:55:19,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,61 /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 [2023-12-24 17:55:19,837 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:19,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1407755477, now seen corresponding path program 1 times [2023-12-24 17:55:19,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:19,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714667701] [2023-12-24 17:55:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:19,837 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 [2023-12-24 17:55:19,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:19,839 INFO L229 MonitoredProcess]: Starting monitored process 63 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) [2023-12-24 17:55:19,858 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 (63)] Waiting until timeout for monitored process [2023-12-24 17:55:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:20,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 17:55:20,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:21,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:21,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 188 treesize of output 62 [2023-12-24 17:55:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:55:21,563 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:55:21,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:21,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714667701] [2023-12-24 17:55:21,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714667701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:55:21,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:55:21,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-24 17:55:21,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677249498] [2023-12-24 17:55:21,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:55:21,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 17:55:21,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 17:55:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:55:21,565 INFO L87 Difference]: Start difference. First operand 1390 states and 1708 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:28,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:28,765 INFO L93 Difference]: Finished difference Result 3303 states and 4090 transitions. [2023-12-24 17:55:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-24 17:55:28,766 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 17:55:28,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:28,768 INFO L225 Difference]: With dead ends: 3303 [2023-12-24 17:55:28,768 INFO L226 Difference]: Without dead ends: 1914 [2023-12-24 17:55:28,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2023-12-24 17:55:28,770 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 437 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:28,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1149 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-24 17:55:28,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2023-12-24 17:55:28,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1466. [2023-12-24 17:55:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1386 states have (on average 1.225108225108225) internal successors, (1698), 1388 states have internal predecessors, (1698), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 17:55:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1794 transitions. [2023-12-24 17:55:28,969 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1794 transitions. Word has length 154 [2023-12-24 17:55:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:28,969 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 1794 transitions. [2023-12-24 17:55:28,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1794 transitions. [2023-12-24 17:55:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 17:55:28,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:28,977 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:28,987 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 (63)] Ended with exit code 0 [2023-12-24 17:55:29,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /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 [2023-12-24 17:55:29,185 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:29,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash -987818381, now seen corresponding path program 1 times [2023-12-24 17:55:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:29,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118792184] [2023-12-24 17:55:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:29,187 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 [2023-12-24 17:55:29,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:29,188 INFO L229 MonitoredProcess]: Starting monitored process 64 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) [2023-12-24 17:55:29,191 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 (64)] Waiting until timeout for monitored process [2023-12-24 17:55:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:29,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:55:29,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:29,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 21 [2023-12-24 17:55:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:55:29,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:55:29,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118792184] [2023-12-24 17:55:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118792184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:55:29,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:55:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:55:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634782062] [2023-12-24 17:55:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:55:29,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:55:29,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:29,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:55:29,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:55:29,845 INFO L87 Difference]: Start difference. First operand 1466 states and 1794 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:31,367 INFO L93 Difference]: Finished difference Result 3697 states and 4557 transitions. [2023-12-24 17:55:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:55:31,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 17:55:31,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:31,370 INFO L225 Difference]: With dead ends: 3697 [2023-12-24 17:55:31,370 INFO L226 Difference]: Without dead ends: 2232 [2023-12-24 17:55:31,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:55:31,376 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 262 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:31,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 270 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 17:55:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2023-12-24 17:55:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 1787. [2023-12-24 17:55:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1707 states have (on average 1.2021089630931459) internal successors, (2052), 1709 states have internal predecessors, (2052), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 17:55:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2148 transitions. [2023-12-24 17:55:31,490 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2148 transitions. Word has length 154 [2023-12-24 17:55:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:31,490 INFO L495 AbstractCegarLoop]: Abstraction has 1787 states and 2148 transitions. [2023-12-24 17:55:31,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2148 transitions. [2023-12-24 17:55:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 17:55:31,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:31,492 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:31,500 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 (64)] Forceful destruction successful, exit code 0 [2023-12-24 17:55:31,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /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 [2023-12-24 17:55:31,701 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:31,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash -594791371, now seen corresponding path program 1 times [2023-12-24 17:55:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092236004] [2023-12-24 17:55:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:31,702 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 [2023-12-24 17:55:31,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:31,703 INFO L229 MonitoredProcess]: Starting monitored process 65 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) [2023-12-24 17:55:31,704 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 (65)] Waiting until timeout for monitored process [2023-12-24 17:55:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:32,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 17:55:32,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:55:32,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:55:32,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:32,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092236004] [2023-12-24 17:55:32,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092236004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:55:32,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:55:32,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:55:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249806055] [2023-12-24 17:55:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:55:32,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:55:32,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:55:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:55:32,695 INFO L87 Difference]: Start difference. First operand 1787 states and 2148 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:36,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:36,091 INFO L93 Difference]: Finished difference Result 3935 states and 4726 transitions. [2023-12-24 17:55:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:55:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 17:55:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:36,094 INFO L225 Difference]: With dead ends: 3935 [2023-12-24 17:55:36,094 INFO L226 Difference]: Without dead ends: 2073 [2023-12-24 17:55:36,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:55:36,096 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 100 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:36,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 648 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 17:55:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-12-24 17:55:36,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1795. [2023-12-24 17:55:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1715 states have (on average 1.2011661807580174) internal successors, (2060), 1717 states have internal predecessors, (2060), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 17:55:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 2156 transitions. [2023-12-24 17:55:36,192 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 2156 transitions. Word has length 154 [2023-12-24 17:55:36,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:36,192 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 2156 transitions. [2023-12-24 17:55:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 2156 transitions. [2023-12-24 17:55:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 17:55:36,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:36,194 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:36,207 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 (65)] Forceful destruction successful, exit code 0 [2023-12-24 17:55:36,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /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 [2023-12-24 17:55:36,404 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:36,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:36,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1599343928, now seen corresponding path program 1 times [2023-12-24 17:55:36,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:36,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910086750] [2023-12-24 17:55:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:36,405 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 [2023-12-24 17:55:36,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:36,406 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2023-12-24 17:55:36,441 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 (66)] Waiting until timeout for monitored process [2023-12-24 17:55:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:36,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:55:36,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:37,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:37,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 42 [2023-12-24 17:55:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:55:37,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:55:37,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:37,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910086750] [2023-12-24 17:55:37,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910086750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:55:37,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:55:37,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:55:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600076627] [2023-12-24 17:55:37,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:55:37,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:55:37,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:37,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:55:37,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:55:37,187 INFO L87 Difference]: Start difference. First operand 1795 states and 2156 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:39,602 INFO L93 Difference]: Finished difference Result 4372 states and 5248 transitions. [2023-12-24 17:55:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:55:39,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 17:55:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:39,605 INFO L225 Difference]: With dead ends: 4372 [2023-12-24 17:55:39,605 INFO L226 Difference]: Without dead ends: 2310 [2023-12-24 17:55:39,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-12-24 17:55:39,607 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 264 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:39,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 811 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 1.9s Time] [2023-12-24 17:55:39,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2023-12-24 17:55:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1693. [2023-12-24 17:55:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1693 states, 1613 states have (on average 1.1934283942963422) internal successors, (1925), 1615 states have internal predecessors, (1925), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 17:55:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2021 transitions. [2023-12-24 17:55:39,706 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2021 transitions. Word has length 154 [2023-12-24 17:55:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:39,707 INFO L495 AbstractCegarLoop]: Abstraction has 1693 states and 2021 transitions. [2023-12-24 17:55:39,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2021 transitions. [2023-12-24 17:55:39,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 17:55:39,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:39,709 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:39,717 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 (66)] Ended with exit code 0 [2023-12-24 17:55:39,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /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 [2023-12-24 17:55:39,913 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:39,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1714769050, now seen corresponding path program 1 times [2023-12-24 17:55:39,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:39,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079105875] [2023-12-24 17:55:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:39,914 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 [2023-12-24 17:55:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:39,915 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2023-12-24 17:55:39,916 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 (67)] Waiting until timeout for monitored process [2023-12-24 17:55:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:40,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:55:40,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:40,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:55:40,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:40,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 68 [2023-12-24 17:55:40,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:40,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 61 [2023-12-24 17:55:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:55:40,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:55:40,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079105875] [2023-12-24 17:55:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079105875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:55:40,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:55:40,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-24 17:55:40,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238903470] [2023-12-24 17:55:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:55:40,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:55:40,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:55:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:55:40,995 INFO L87 Difference]: Start difference. First operand 1693 states and 2021 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:45,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:45,202 INFO L93 Difference]: Finished difference Result 3367 states and 4025 transitions. [2023-12-24 17:55:45,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:55:45,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2023-12-24 17:55:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:45,205 INFO L225 Difference]: With dead ends: 3367 [2023-12-24 17:55:45,205 INFO L226 Difference]: Without dead ends: 1675 [2023-12-24 17:55:45,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:55:45,207 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 184 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:45,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 555 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-24 17:55:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2023-12-24 17:55:45,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1525. [2023-12-24 17:55:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1445 states have (on average 1.184083044982699) internal successors, (1711), 1447 states have internal predecessors, (1711), 48 states have call successors, (48), 31 states have call predecessors, (48), 31 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-24 17:55:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1807 transitions. [2023-12-24 17:55:45,329 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1807 transitions. Word has length 154 [2023-12-24 17:55:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:45,329 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 1807 transitions. [2023-12-24 17:55:45,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:55:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1807 transitions. [2023-12-24 17:55:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-24 17:55:45,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:45,331 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:45,340 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 (67)] Forceful destruction successful, exit code 0 [2023-12-24 17:55:45,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /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 [2023-12-24 17:55:45,539 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:45,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2050820200, now seen corresponding path program 1 times [2023-12-24 17:55:45,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:45,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643733724] [2023-12-24 17:55:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:45,540 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 [2023-12-24 17:55:45,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:45,541 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2023-12-24 17:55:45,542 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 (68)] Waiting until timeout for monitored process [2023-12-24 17:55:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:45,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-24 17:55:45,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:46,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 43 [2023-12-24 17:55:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 260 proven. 48 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-24 17:55:46,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:55:46,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 25 [2023-12-24 17:55:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 36 proven. 15 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-24 17:55:46,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643733724] [2023-12-24 17:55:46,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643733724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:55:46,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 17:55:46,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-12-24 17:55:46,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696390584] [2023-12-24 17:55:46,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 17:55:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:55:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:55:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:55:46,195 INFO L87 Difference]: Start difference. First operand 1525 states and 1807 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 17:55:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:55:47,003 INFO L93 Difference]: Finished difference Result 2847 states and 3360 transitions. [2023-12-24 17:55:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:55:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 154 [2023-12-24 17:55:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:55:47,005 INFO L225 Difference]: With dead ends: 2847 [2023-12-24 17:55:47,005 INFO L226 Difference]: Without dead ends: 1314 [2023-12-24 17:55:47,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:55:47,007 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 138 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:55:47,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 524 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:55:47,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2023-12-24 17:55:47,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1296. [2023-12-24 17:55:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1227 states have (on average 1.1752241238793806) internal successors, (1442), 1229 states have internal predecessors, (1442), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:55:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1526 transitions. [2023-12-24 17:55:47,094 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1526 transitions. Word has length 154 [2023-12-24 17:55:47,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:55:47,095 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1526 transitions. [2023-12-24 17:55:47,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 4 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-12-24 17:55:47,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1526 transitions. [2023-12-24 17:55:47,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 17:55:47,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:55:47,096 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:55:47,106 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 (68)] Forceful destruction successful, exit code 0 [2023-12-24 17:55:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /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 [2023-12-24 17:55:47,304 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:55:47,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:55:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash 647252931, now seen corresponding path program 1 times [2023-12-24 17:55:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:55:47,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179331452] [2023-12-24 17:55:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:55:47,305 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 [2023-12-24 17:55:47,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:55:47,306 INFO L229 MonitoredProcess]: Starting monitored process 69 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) [2023-12-24 17:55:47,309 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 (69)] Waiting until timeout for monitored process [2023-12-24 17:55:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:55:47,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-24 17:55:47,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:55:47,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:55:48,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 34 [2023-12-24 17:55:48,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:48,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 65 [2023-12-24 17:55:48,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:48,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2023-12-24 17:55:49,372 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:49,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 81 [2023-12-24 17:55:49,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:49,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 181 treesize of output 114 [2023-12-24 17:55:50,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:50,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 232 treesize of output 120 [2023-12-24 17:55:53,514 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:55:53,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 237 treesize of output 81 [2023-12-24 17:55:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-24 17:55:53,751 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:55:53,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:55:53,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179331452] [2023-12-24 17:55:53,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179331452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:55:53,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:55:53,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-12-24 17:55:53,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361840216] [2023-12-24 17:55:53,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:55:53,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 17:55:53,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:55:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 17:55:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-12-24 17:55:53,752 INFO L87 Difference]: Start difference. First operand 1296 states and 1526 transitions. Second operand has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-24 17:56:07,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:56:10,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-24 17:56:15,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:15,164 INFO L93 Difference]: Finished difference Result 3775 states and 4484 transitions. [2023-12-24 17:56:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 17:56:15,165 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 155 [2023-12-24 17:56:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:15,167 INFO L225 Difference]: With dead ends: 3775 [2023-12-24 17:56:15,167 INFO L226 Difference]: Without dead ends: 2480 [2023-12-24 17:56:15,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:56:15,168 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 873 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:15,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 980 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 18.7s Time] [2023-12-24 17:56:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2023-12-24 17:56:15,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 1358. [2023-12-24 17:56:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1289 states have (on average 1.1722265321955003) internal successors, (1511), 1291 states have internal predecessors, (1511), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1595 transitions. [2023-12-24 17:56:15,260 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1595 transitions. Word has length 155 [2023-12-24 17:56:15,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:15,260 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 1595 transitions. [2023-12-24 17:56:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.2) internal successors, (80), 24 states have internal predecessors, (80), 5 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-12-24 17:56:15,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1595 transitions. [2023-12-24 17:56:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 17:56:15,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:15,262 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:15,272 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 (69)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:15,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /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 [2023-12-24 17:56:15,471 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:15,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1801658643, now seen corresponding path program 1 times [2023-12-24 17:56:15,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:15,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687868477] [2023-12-24 17:56:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:15,472 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 [2023-12-24 17:56:15,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:15,473 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2023-12-24 17:56:15,508 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 (70)] Waiting until timeout for monitored process [2023-12-24 17:56:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:15,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:56:15,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:16,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:16,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 49 [2023-12-24 17:56:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:16,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:16,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:16,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687868477] [2023-12-24 17:56:16,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687868477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:16,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:16,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:56:16,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83262294] [2023-12-24 17:56:16,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:16,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:56:16,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:16,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:56:16,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:56:16,402 INFO L87 Difference]: Start difference. First operand 1358 states and 1595 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:20,198 INFO L93 Difference]: Finished difference Result 2775 states and 3273 transitions. [2023-12-24 17:56:20,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:56:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 155 [2023-12-24 17:56:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:20,202 INFO L225 Difference]: With dead ends: 2775 [2023-12-24 17:56:20,202 INFO L226 Difference]: Without dead ends: 1418 [2023-12-24 17:56:20,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:56:20,203 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 249 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:20,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 891 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 17:56:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2023-12-24 17:56:20,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1336. [2023-12-24 17:56:20,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1267 states have (on average 1.1720599842146804) internal successors, (1485), 1269 states have internal predecessors, (1485), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1569 transitions. [2023-12-24 17:56:20,291 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1569 transitions. Word has length 155 [2023-12-24 17:56:20,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:20,291 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1569 transitions. [2023-12-24 17:56:20,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:20,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1569 transitions. [2023-12-24 17:56:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 17:56:20,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:20,293 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:20,303 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 (70)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:20,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /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 [2023-12-24 17:56:20,502 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:20,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1653679088, now seen corresponding path program 1 times [2023-12-24 17:56:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449488954] [2023-12-24 17:56:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:20,503 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 [2023-12-24 17:56:20,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:20,503 INFO L229 MonitoredProcess]: Starting monitored process 71 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) [2023-12-24 17:56:20,516 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 (71)] Waiting until timeout for monitored process [2023-12-24 17:56:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:20,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:56:20,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:21,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:21,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 37 [2023-12-24 17:56:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:21,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:21,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:21,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449488954] [2023-12-24 17:56:21,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449488954] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:21,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:21,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:56:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120971645] [2023-12-24 17:56:21,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:21,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:56:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:56:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:56:21,443 INFO L87 Difference]: Start difference. First operand 1336 states and 1569 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:24,596 INFO L93 Difference]: Finished difference Result 2818 states and 3319 transitions. [2023-12-24 17:56:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:56:24,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 155 [2023-12-24 17:56:24,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:24,598 INFO L225 Difference]: With dead ends: 2818 [2023-12-24 17:56:24,598 INFO L226 Difference]: Without dead ends: 1483 [2023-12-24 17:56:24,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:56:24,600 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 331 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:24,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 692 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-24 17:56:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2023-12-24 17:56:24,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1364. [2023-12-24 17:56:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1295 states have (on average 1.162162162162162) internal successors, (1505), 1297 states have internal predecessors, (1505), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1589 transitions. [2023-12-24 17:56:24,708 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1589 transitions. Word has length 155 [2023-12-24 17:56:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:24,708 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1589 transitions. [2023-12-24 17:56:24,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1589 transitions. [2023-12-24 17:56:24,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 17:56:24,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:24,709 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:24,717 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 (71)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:24,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /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 [2023-12-24 17:56:24,918 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:24,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash 130404382, now seen corresponding path program 1 times [2023-12-24 17:56:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877959021] [2023-12-24 17:56:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:24,919 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 [2023-12-24 17:56:24,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:24,920 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2023-12-24 17:56:24,940 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 (72)] Waiting until timeout for monitored process [2023-12-24 17:56:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:25,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-24 17:56:25,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:25,769 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:25,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 34 [2023-12-24 17:56:26,093 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:26,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:26,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:26,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877959021] [2023-12-24 17:56:26,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877959021] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:26,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:26,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-24 17:56:26,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455180379] [2023-12-24 17:56:26,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:26,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 17:56:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:26,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 17:56:26,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:56:26,095 INFO L87 Difference]: Start difference. First operand 1364 states and 1589 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:30,611 INFO L93 Difference]: Finished difference Result 2863 states and 3357 transitions. [2023-12-24 17:56:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-24 17:56:30,613 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 155 [2023-12-24 17:56:30,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:30,614 INFO L225 Difference]: With dead ends: 2863 [2023-12-24 17:56:30,615 INFO L226 Difference]: Without dead ends: 1500 [2023-12-24 17:56:30,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=232, Invalid=470, Unknown=0, NotChecked=0, Total=702 [2023-12-24 17:56:30,616 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 489 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:30,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 919 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1251 Invalid, 3 Unknown, 0 Unchecked, 3.1s Time] [2023-12-24 17:56:30,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-12-24 17:56:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1392. [2023-12-24 17:56:30,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1323 states have (on average 1.163265306122449) internal successors, (1539), 1325 states have internal predecessors, (1539), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1623 transitions. [2023-12-24 17:56:30,706 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1623 transitions. Word has length 155 [2023-12-24 17:56:30,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:30,706 INFO L495 AbstractCegarLoop]: Abstraction has 1392 states and 1623 transitions. [2023-12-24 17:56:30,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:30,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1623 transitions. [2023-12-24 17:56:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-24 17:56:30,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:30,708 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:30,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /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 [2023-12-24 17:56:30,915 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:30,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash 831468960, now seen corresponding path program 1 times [2023-12-24 17:56:30,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789107410] [2023-12-24 17:56:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:30,916 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 [2023-12-24 17:56:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:30,917 INFO L229 MonitoredProcess]: Starting monitored process 73 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) [2023-12-24 17:56:30,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2023-12-24 17:56:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:31,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 17:56:31,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:32,090 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:32,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789107410] [2023-12-24 17:56:32,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789107410] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:32,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:32,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:56:32,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198876405] [2023-12-24 17:56:32,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:32,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:56:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:56:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:56:32,091 INFO L87 Difference]: Start difference. First operand 1392 states and 1623 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:35,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:35,842 INFO L93 Difference]: Finished difference Result 2837 states and 3317 transitions. [2023-12-24 17:56:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:56:35,844 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 155 [2023-12-24 17:56:35,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:35,845 INFO L225 Difference]: With dead ends: 2837 [2023-12-24 17:56:35,845 INFO L226 Difference]: Without dead ends: 1446 [2023-12-24 17:56:35,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2023-12-24 17:56:35,846 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 373 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:35,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 464 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-24 17:56:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-12-24 17:56:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1388. [2023-12-24 17:56:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1319 states have (on average 1.1607278241091736) internal successors, (1531), 1321 states have internal predecessors, (1531), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1615 transitions. [2023-12-24 17:56:35,944 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1615 transitions. Word has length 155 [2023-12-24 17:56:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:35,944 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 1615 transitions. [2023-12-24 17:56:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1615 transitions. [2023-12-24 17:56:35,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 17:56:35,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:35,946 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:35,953 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 (73)] Ended with exit code 0 [2023-12-24 17:56:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /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 [2023-12-24 17:56:36,153 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:36,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash 898751131, now seen corresponding path program 1 times [2023-12-24 17:56:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124044681] [2023-12-24 17:56:36,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:36,154 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 [2023-12-24 17:56:36,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:36,155 INFO L229 MonitoredProcess]: Starting monitored process 74 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) [2023-12-24 17:56:36,156 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 (74)] Waiting until timeout for monitored process [2023-12-24 17:56:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:36,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-24 17:56:36,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:36,581 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:36,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-12-24 17:56:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:36,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:36,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:36,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124044681] [2023-12-24 17:56:36,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124044681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:36,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:36,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 17:56:36,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157728701] [2023-12-24 17:56:36,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:36,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:56:36,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:36,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:56:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 17:56:36,594 INFO L87 Difference]: Start difference. First operand 1388 states and 1615 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:37,348 INFO L93 Difference]: Finished difference Result 3010 states and 3546 transitions. [2023-12-24 17:56:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:56:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 17:56:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:37,350 INFO L225 Difference]: With dead ends: 3010 [2023-12-24 17:56:37,350 INFO L226 Difference]: Without dead ends: 1623 [2023-12-24 17:56:37,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:56:37,352 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 108 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:37,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 498 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-24 17:56:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2023-12-24 17:56:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1394. [2023-12-24 17:56:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1325 states have (on average 1.16) internal successors, (1537), 1327 states have internal predecessors, (1537), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1621 transitions. [2023-12-24 17:56:37,450 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1621 transitions. Word has length 156 [2023-12-24 17:56:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:37,450 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 1621 transitions. [2023-12-24 17:56:37,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1621 transitions. [2023-12-24 17:56:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 17:56:37,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:37,451 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:37,459 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 (74)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:37,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /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 [2023-12-24 17:56:37,659 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:37,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash 89404505, now seen corresponding path program 1 times [2023-12-24 17:56:37,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:37,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371965205] [2023-12-24 17:56:37,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:37,661 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 [2023-12-24 17:56:37,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:37,662 INFO L229 MonitoredProcess]: Starting monitored process 75 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) [2023-12-24 17:56:37,697 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 (75)] Waiting until timeout for monitored process [2023-12-24 17:56:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:38,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-24 17:56:38,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:38,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:38,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:38,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371965205] [2023-12-24 17:56:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371965205] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:38,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:38,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:56:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113996545] [2023-12-24 17:56:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-24 17:56:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-24 17:56:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-24 17:56:38,048 INFO L87 Difference]: Start difference. First operand 1394 states and 1621 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:38,194 INFO L93 Difference]: Finished difference Result 2844 states and 3319 transitions. [2023-12-24 17:56:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 17:56:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 17:56:38,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:38,196 INFO L225 Difference]: With dead ends: 2844 [2023-12-24 17:56:38,196 INFO L226 Difference]: Without dead ends: 1451 [2023-12-24 17:56:38,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:56:38,197 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 66 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:38,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 753 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:56:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2023-12-24 17:56:38,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1400. [2023-12-24 17:56:38,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1331 states have (on average 1.1592787377911344) internal successors, (1543), 1333 states have internal predecessors, (1543), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:38,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 1627 transitions. [2023-12-24 17:56:38,286 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 1627 transitions. Word has length 156 [2023-12-24 17:56:38,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:38,286 INFO L495 AbstractCegarLoop]: Abstraction has 1400 states and 1627 transitions. [2023-12-24 17:56:38,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:38,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 1627 transitions. [2023-12-24 17:56:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 17:56:38,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:38,288 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:38,296 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 (75)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:38,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /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 [2023-12-24 17:56:38,496 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:38,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1842760944, now seen corresponding path program 1 times [2023-12-24 17:56:38,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:38,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253142083] [2023-12-24 17:56:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:38,497 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 [2023-12-24 17:56:38,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:38,498 INFO L229 MonitoredProcess]: Starting monitored process 76 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) [2023-12-24 17:56:38,499 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 (76)] Waiting until timeout for monitored process [2023-12-24 17:56:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:38,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-24 17:56:38,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:39,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:39,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 41 [2023-12-24 17:56:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:39,324 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:39,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:39,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253142083] [2023-12-24 17:56:39,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253142083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:39,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:39,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 17:56:39,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980627748] [2023-12-24 17:56:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:39,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:56:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:56:39,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:56:39,325 INFO L87 Difference]: Start difference. First operand 1400 states and 1627 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:41,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:41,037 INFO L93 Difference]: Finished difference Result 2876 states and 3339 transitions. [2023-12-24 17:56:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:56:41,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 17:56:41,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:41,039 INFO L225 Difference]: With dead ends: 2876 [2023-12-24 17:56:41,039 INFO L226 Difference]: Without dead ends: 1393 [2023-12-24 17:56:41,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:56:41,045 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 142 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:41,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 779 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 17:56:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-12-24 17:56:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1348. [2023-12-24 17:56:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1279 states have (on average 1.1548084440969508) internal successors, (1477), 1281 states have internal predecessors, (1477), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1561 transitions. [2023-12-24 17:56:41,136 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1561 transitions. Word has length 156 [2023-12-24 17:56:41,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:41,136 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1561 transitions. [2023-12-24 17:56:41,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:41,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1561 transitions. [2023-12-24 17:56:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 17:56:41,146 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:41,146 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:41,158 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 (76)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:41,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /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 [2023-12-24 17:56:41,354 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:41,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash 675668263, now seen corresponding path program 1 times [2023-12-24 17:56:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:41,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952807308] [2023-12-24 17:56:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:41,355 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 [2023-12-24 17:56:41,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:41,356 INFO L229 MonitoredProcess]: Starting monitored process 77 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) [2023-12-24 17:56:41,389 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 (77)] Waiting until timeout for monitored process [2023-12-24 17:56:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:41,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-24 17:56:41,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:41,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:41,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:41,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952807308] [2023-12-24 17:56:41,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952807308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:41,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:41,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-24 17:56:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918633872] [2023-12-24 17:56:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:41,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-24 17:56:41,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-24 17:56:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:56:41,736 INFO L87 Difference]: Start difference. First operand 1348 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:41,839 INFO L93 Difference]: Finished difference Result 2707 states and 3136 transitions. [2023-12-24 17:56:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-24 17:56:41,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 17:56:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:41,841 INFO L225 Difference]: With dead ends: 2707 [2023-12-24 17:56:41,841 INFO L226 Difference]: Without dead ends: 1360 [2023-12-24 17:56:41,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-24 17:56:41,842 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:41,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 304 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-24 17:56:41,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2023-12-24 17:56:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1351. [2023-12-24 17:56:41,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1351 states, 1282 states have (on average 1.1544461778471138) internal successors, (1480), 1284 states have internal predecessors, (1480), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1351 states to 1351 states and 1564 transitions. [2023-12-24 17:56:41,931 INFO L78 Accepts]: Start accepts. Automaton has 1351 states and 1564 transitions. Word has length 156 [2023-12-24 17:56:41,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:41,931 INFO L495 AbstractCegarLoop]: Abstraction has 1351 states and 1564 transitions. [2023-12-24 17:56:41,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:41,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1351 states and 1564 transitions. [2023-12-24 17:56:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 17:56:41,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:41,933 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:41,940 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 (77)] Ended with exit code 0 [2023-12-24 17:56:42,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /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 [2023-12-24 17:56:42,141 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:42,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1844291671, now seen corresponding path program 1 times [2023-12-24 17:56:42,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:42,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619002000] [2023-12-24 17:56:42,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:42,141 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 [2023-12-24 17:56:42,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:42,142 INFO L229 MonitoredProcess]: Starting monitored process 78 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) [2023-12-24 17:56:42,144 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 (78)] Waiting until timeout for monitored process [2023-12-24 17:56:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:42,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 17:56:42,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:42,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:56:42,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 17:56:42,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:42,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:56:42,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:42,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:56:43,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:43,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 40 [2023-12-24 17:56:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:56:43,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:43,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:43,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619002000] [2023-12-24 17:56:43,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619002000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:43,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:43,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-24 17:56:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879383206] [2023-12-24 17:56:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-24 17:56:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:43,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-24 17:56:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:56:43,095 INFO L87 Difference]: Start difference. First operand 1351 states and 1564 transitions. Second operand has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:56:44,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:44,925 INFO L93 Difference]: Finished difference Result 1596 states and 1843 transitions. [2023-12-24 17:56:44,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-24 17:56:44,925 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 156 [2023-12-24 17:56:44,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:44,927 INFO L225 Difference]: With dead ends: 1596 [2023-12-24 17:56:44,927 INFO L226 Difference]: Without dead ends: 1594 [2023-12-24 17:56:44,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-12-24 17:56:44,927 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 413 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:44,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 514 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 17:56:44,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2023-12-24 17:56:45,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1360. [2023-12-24 17:56:45,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1291 states have (on average 1.158017041053447) internal successors, (1495), 1293 states have internal predecessors, (1495), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1579 transitions. [2023-12-24 17:56:45,031 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1579 transitions. Word has length 156 [2023-12-24 17:56:45,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:45,031 INFO L495 AbstractCegarLoop]: Abstraction has 1360 states and 1579 transitions. [2023-12-24 17:56:45,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.769230769230769) internal successors, (75), 14 states have internal predecessors, (75), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:56:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1579 transitions. [2023-12-24 17:56:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-24 17:56:45,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:45,033 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:45,043 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 (78)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:45,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /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 [2023-12-24 17:56:45,241 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1979542445, now seen corresponding path program 1 times [2023-12-24 17:56:45,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:45,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471210710] [2023-12-24 17:56:45,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:45,242 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 [2023-12-24 17:56:45,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:45,243 INFO L229 MonitoredProcess]: Starting monitored process 79 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) [2023-12-24 17:56:45,277 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 (79)] Waiting until timeout for monitored process [2023-12-24 17:56:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:45,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 17:56:45,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:45,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:56:46,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:46,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 46 [2023-12-24 17:56:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:56:46,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:56:46,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:56:46,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471210710] [2023-12-24 17:56:46,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471210710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:56:46,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:56:46,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 17:56:46,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046530305] [2023-12-24 17:56:46,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:56:46,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 17:56:46,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:56:46,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 17:56:46,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-24 17:56:46,120 INFO L87 Difference]: Start difference. First operand 1360 states and 1579 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:56:53,748 INFO L93 Difference]: Finished difference Result 3422 states and 4021 transitions. [2023-12-24 17:56:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 17:56:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 156 [2023-12-24 17:56:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:56:53,751 INFO L225 Difference]: With dead ends: 3422 [2023-12-24 17:56:53,751 INFO L226 Difference]: Without dead ends: 2063 [2023-12-24 17:56:53,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:56:53,752 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 231 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 23 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-12-24 17:56:53,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1407 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1365 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2023-12-24 17:56:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-24 17:56:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1432. [2023-12-24 17:56:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1363 states have (on average 1.1599413059427732) internal successors, (1581), 1365 states have internal predecessors, (1581), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:56:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1665 transitions. [2023-12-24 17:56:53,845 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1665 transitions. Word has length 156 [2023-12-24 17:56:53,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:56:53,845 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1665 transitions. [2023-12-24 17:56:53,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:56:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1665 transitions. [2023-12-24 17:56:53,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 17:56:53,847 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:56:53,847 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:56:53,857 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 (79)] Forceful destruction successful, exit code 0 [2023-12-24 17:56:54,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /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 [2023-12-24 17:56:54,052 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:56:54,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:56:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1306964925, now seen corresponding path program 1 times [2023-12-24 17:56:54,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:56:54,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958527977] [2023-12-24 17:56:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:56:54,053 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 [2023-12-24 17:56:54,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:56:54,054 INFO L229 MonitoredProcess]: Starting monitored process 80 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) [2023-12-24 17:56:54,055 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 (80)] Waiting until timeout for monitored process [2023-12-24 17:56:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:56:54,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-24 17:56:54,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:56:54,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:56:54,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 22 [2023-12-24 17:56:55,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:55,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 63 [2023-12-24 17:56:55,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:55,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 66 [2023-12-24 17:56:56,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:56,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 66 [2023-12-24 17:56:56,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:56,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 169 treesize of output 99 [2023-12-24 17:56:56,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:56,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 90 [2023-12-24 17:56:58,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:56:58,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 204 treesize of output 72 [2023-12-24 17:56:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 312 proven. 12 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-24 17:56:58,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:57:00,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:57:00,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958527977] [2023-12-24 17:57:00,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958527977] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 17:57:00,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2024961667] [2023-12-24 17:57:00,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:57:00,810 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 17:57:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 17:57:00,811 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 17:57:00,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (81)] Waiting until timeout for monitored process [2023-12-24 17:57:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:57:02,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 17:57:02,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:57:02,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-12-24 17:57:02,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-24 17:57:03,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-24 17:57:03,605 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:03,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-24 17:57:03,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:03,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-12-24 17:57:03,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:03,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2023-12-24 17:57:04,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:04,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2023-12-24 17:57:04,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:04,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2023-12-24 17:57:04,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:04,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2023-12-24 17:57:04,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:04,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 32 [2023-12-24 17:57:04,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:04,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 17 [2023-12-24 17:57:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 416 proven. 42 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-12-24 17:57:04,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:57:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 54 proven. 45 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 17:57:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2024961667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-24 17:57:06,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-24 17:57:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 44 [2023-12-24 17:57:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627797844] [2023-12-24 17:57:06,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-24 17:57:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-24 17:57:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:57:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-24 17:57:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=2563, Unknown=0, NotChecked=0, Total=2862 [2023-12-24 17:57:06,259 INFO L87 Difference]: Start difference. First operand 1432 states and 1665 transitions. Second operand has 44 states, 39 states have (on average 5.794871794871795) internal successors, (226), 42 states have internal predecessors, (226), 16 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 16 states have call successors, (54) [2023-12-24 17:57:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:57:52,264 INFO L93 Difference]: Finished difference Result 3862 states and 4489 transitions. [2023-12-24 17:57:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-12-24 17:57:52,265 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 39 states have (on average 5.794871794871795) internal successors, (226), 42 states have internal predecessors, (226), 16 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 16 states have call successors, (54) Word has length 157 [2023-12-24 17:57:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:57:52,267 INFO L225 Difference]: With dead ends: 3862 [2023-12-24 17:57:52,267 INFO L226 Difference]: Without dead ends: 2359 [2023-12-24 17:57:52,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6215 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=3395, Invalid=19861, Unknown=0, NotChecked=0, Total=23256 [2023-12-24 17:57:52,282 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 877 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 7240 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1819 SdHoareTripleChecker+Invalid, 7492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 7240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:57:52,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1819 Invalid, 7492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 7240 Invalid, 0 Unknown, 0 Unchecked, 27.4s Time] [2023-12-24 17:57:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2023-12-24 17:57:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 1430. [2023-12-24 17:57:52,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1361 states have (on average 1.1557678177810433) internal successors, (1573), 1363 states have internal predecessors, (1573), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:57:52,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1657 transitions. [2023-12-24 17:57:52,384 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1657 transitions. Word has length 157 [2023-12-24 17:57:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:57:52,384 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1657 transitions. [2023-12-24 17:57:52,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 39 states have (on average 5.794871794871795) internal successors, (226), 42 states have internal predecessors, (226), 16 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 16 states have call successors, (54) [2023-12-24 17:57:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1657 transitions. [2023-12-24 17:57:52,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-24 17:57:52,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:57:52,387 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:57:52,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (81)] Forceful destruction successful, exit code 0 [2023-12-24 17:57:52,607 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 (80)] Forceful destruction successful, exit code 0 [2023-12-24 17:57:52,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,80 /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 [2023-12-24 17:57:52,802 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:57:52,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:57:52,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1412616139, now seen corresponding path program 1 times [2023-12-24 17:57:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:57:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921087475] [2023-12-24 17:57:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:57:52,803 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 [2023-12-24 17:57:52,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:57:52,804 INFO L229 MonitoredProcess]: Starting monitored process 82 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) [2023-12-24 17:57:52,805 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 (82)] Waiting until timeout for monitored process [2023-12-24 17:57:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:57:53,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-24 17:57:53,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:57:53,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:57:53,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2023-12-24 17:57:53,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:53,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-24 17:57:53,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:53,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 37 [2023-12-24 17:57:54,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:54,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 43 [2023-12-24 17:57:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:57:54,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:57:54,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:57:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921087475] [2023-12-24 17:57:54,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921087475] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:57:54,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:57:54,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-24 17:57:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638514571] [2023-12-24 17:57:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:57:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-24 17:57:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:57:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-24 17:57:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-12-24 17:57:54,145 INFO L87 Difference]: Start difference. First operand 1430 states and 1657 transitions. Second operand has 16 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:57:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:57:57,440 INFO L93 Difference]: Finished difference Result 1471 states and 1700 transitions. [2023-12-24 17:57:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 17:57:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 157 [2023-12-24 17:57:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:57:57,442 INFO L225 Difference]: With dead ends: 1471 [2023-12-24 17:57:57,442 INFO L226 Difference]: Without dead ends: 1469 [2023-12-24 17:57:57,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2023-12-24 17:57:57,443 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 118 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-24 17:57:57,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 414 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-24 17:57:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1469 states. [2023-12-24 17:57:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1469 to 1430. [2023-12-24 17:57:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1361 states have (on average 1.1557678177810433) internal successors, (1573), 1363 states have internal predecessors, (1573), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:57:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1657 transitions. [2023-12-24 17:57:57,540 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1657 transitions. Word has length 157 [2023-12-24 17:57:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:57:57,540 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 1657 transitions. [2023-12-24 17:57:57,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:57:57,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1657 transitions. [2023-12-24 17:57:57,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 17:57:57,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:57:57,542 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:57:57,552 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 (82)] Ended with exit code 0 [2023-12-24 17:57:57,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /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 [2023-12-24 17:57:57,753 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:57:57,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:57:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash -825386228, now seen corresponding path program 1 times [2023-12-24 17:57:57,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:57:57,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557807946] [2023-12-24 17:57:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:57:57,754 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 [2023-12-24 17:57:57,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:57:57,756 INFO L229 MonitoredProcess]: Starting monitored process 83 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) [2023-12-24 17:57:57,789 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 (83)] Waiting until timeout for monitored process [2023-12-24 17:57:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:57:58,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-24 17:57:58,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:57:58,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 31 [2023-12-24 17:57:58,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:58,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:57:58,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:58,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 34 [2023-12-24 17:57:58,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:57:58,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 20 [2023-12-24 17:57:58,822 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 17:57:58,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:57:58,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:57:58,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557807946] [2023-12-24 17:57:58,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557807946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:57:58,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:57:58,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-24 17:57:58,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738079682] [2023-12-24 17:57:58,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:57:58,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-24 17:57:58,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:57:58,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-24 17:57:58,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:57:58,823 INFO L87 Difference]: Start difference. First operand 1430 states and 1657 transitions. Second operand has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:58:01,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:01,813 INFO L93 Difference]: Finished difference Result 1678 states and 1933 transitions. [2023-12-24 17:58:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 17:58:01,814 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 158 [2023-12-24 17:58:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:01,815 INFO L225 Difference]: With dead ends: 1678 [2023-12-24 17:58:01,815 INFO L226 Difference]: Without dead ends: 1676 [2023-12-24 17:58:01,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=1115, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 17:58:01,816 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 249 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:01,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 585 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 17:58:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2023-12-24 17:58:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1439. [2023-12-24 17:58:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1370 states have (on average 1.1569343065693432) internal successors, (1585), 1372 states have internal predecessors, (1585), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:01,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1669 transitions. [2023-12-24 17:58:01,923 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1669 transitions. Word has length 158 [2023-12-24 17:58:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:01,923 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 1669 transitions. [2023-12-24 17:58:01,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.133333333333334) internal successors, (77), 16 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:58:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1669 transitions. [2023-12-24 17:58:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 17:58:01,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:01,925 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:01,934 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 (83)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:02,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /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 [2023-12-24 17:58:02,134 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:02,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1224809074, now seen corresponding path program 1 times [2023-12-24 17:58:02,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:02,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606191825] [2023-12-24 17:58:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:02,135 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 [2023-12-24 17:58:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:02,136 INFO L229 MonitoredProcess]: Starting monitored process 84 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) [2023-12-24 17:58:02,169 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 (84)] Waiting until timeout for monitored process [2023-12-24 17:58:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:02,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 17:58:02,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:02,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:58:02,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 21 [2023-12-24 17:58:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:02,811 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:58:02,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:02,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606191825] [2023-12-24 17:58:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606191825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:58:02,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:58:02,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-24 17:58:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237782611] [2023-12-24 17:58:02,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:02,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-24 17:58:02,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:02,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-24 17:58:02,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-24 17:58:02,812 INFO L87 Difference]: Start difference. First operand 1439 states and 1669 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:04,497 INFO L93 Difference]: Finished difference Result 3396 states and 3983 transitions. [2023-12-24 17:58:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-24 17:58:04,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 17:58:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:04,499 INFO L225 Difference]: With dead ends: 3396 [2023-12-24 17:58:04,499 INFO L226 Difference]: Without dead ends: 1958 [2023-12-24 17:58:04,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-24 17:58:04,500 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 262 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:04,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 683 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 703 Invalid, 1 Unknown, 0 Unchecked, 1.4s Time] [2023-12-24 17:58:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2023-12-24 17:58:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1407. [2023-12-24 17:58:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1338 states have (on average 1.1606875934230194) internal successors, (1553), 1340 states have internal predecessors, (1553), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1637 transitions. [2023-12-24 17:58:04,601 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1637 transitions. Word has length 158 [2023-12-24 17:58:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:04,601 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1637 transitions. [2023-12-24 17:58:04,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1637 transitions. [2023-12-24 17:58:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 17:58:04,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:04,603 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:04,610 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 (84)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:04,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /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 [2023-12-24 17:58:04,811 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:04,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:04,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2024221766, now seen corresponding path program 1 times [2023-12-24 17:58:04,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:04,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651795595] [2023-12-24 17:58:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:04,812 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 [2023-12-24 17:58:04,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:04,813 INFO L229 MonitoredProcess]: Starting monitored process 85 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) [2023-12-24 17:58:04,846 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 (85)] Waiting until timeout for monitored process [2023-12-24 17:58:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:05,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-24 17:58:05,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:05,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:58:05,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:05,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 42 [2023-12-24 17:58:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:05,486 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:58:05,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:05,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651795595] [2023-12-24 17:58:05,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651795595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:58:05,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:58:05,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-24 17:58:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32301267] [2023-12-24 17:58:05,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:05,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 17:58:05,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:05,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 17:58:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-24 17:58:05,487 INFO L87 Difference]: Start difference. First operand 1407 states and 1637 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:07,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:07,559 INFO L93 Difference]: Finished difference Result 3196 states and 3729 transitions. [2023-12-24 17:58:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 17:58:07,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 17:58:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:07,562 INFO L225 Difference]: With dead ends: 3196 [2023-12-24 17:58:07,562 INFO L226 Difference]: Without dead ends: 1790 [2023-12-24 17:58:07,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:58:07,563 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 221 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:07,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 717 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 827 Invalid, 1 Unknown, 0 Unchecked, 1.8s Time] [2023-12-24 17:58:07,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2023-12-24 17:58:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1319. [2023-12-24 17:58:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1250 states have (on average 1.1576) internal successors, (1447), 1252 states have internal predecessors, (1447), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1531 transitions. [2023-12-24 17:58:07,673 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1531 transitions. Word has length 158 [2023-12-24 17:58:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:07,673 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1531 transitions. [2023-12-24 17:58:07,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1531 transitions. [2023-12-24 17:58:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 17:58:07,674 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:07,674 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:07,686 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 (85)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /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 [2023-12-24 17:58:07,882 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:07,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1425789390, now seen corresponding path program 1 times [2023-12-24 17:58:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:07,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016028976] [2023-12-24 17:58:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:07,883 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 [2023-12-24 17:58:07,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:07,885 INFO L229 MonitoredProcess]: Starting monitored process 86 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) [2023-12-24 17:58:07,886 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 (86)] Waiting until timeout for monitored process [2023-12-24 17:58:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:08,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-24 17:58:08,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:08,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:58:08,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:08,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 53 [2023-12-24 17:58:08,835 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:08,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:58:08,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:08,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016028976] [2023-12-24 17:58:08,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016028976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:58:08,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:58:08,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-24 17:58:08,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116505330] [2023-12-24 17:58:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:08,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-24 17:58:08,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-24 17:58:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-24 17:58:08,836 INFO L87 Difference]: Start difference. First operand 1319 states and 1531 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:11,750 INFO L93 Difference]: Finished difference Result 3281 states and 3825 transitions. [2023-12-24 17:58:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-24 17:58:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 17:58:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:11,752 INFO L225 Difference]: With dead ends: 3281 [2023-12-24 17:58:11,753 INFO L226 Difference]: Without dead ends: 1963 [2023-12-24 17:58:11,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-12-24 17:58:11,754 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 419 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 76 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:11,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 920 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1220 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 17:58:11,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2023-12-24 17:58:11,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1271. [2023-12-24 17:58:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1202 states have (on average 1.1439267886855242) internal successors, (1375), 1204 states have internal predecessors, (1375), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1459 transitions. [2023-12-24 17:58:11,887 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1459 transitions. Word has length 158 [2023-12-24 17:58:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:11,887 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 1459 transitions. [2023-12-24 17:58:11,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1459 transitions. [2023-12-24 17:58:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-24 17:58:11,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:11,888 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:11,899 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 (86)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:12,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /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 [2023-12-24 17:58:12,091 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:12,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:12,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1323790328, now seen corresponding path program 1 times [2023-12-24 17:58:12,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:12,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946186191] [2023-12-24 17:58:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:12,092 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 [2023-12-24 17:58:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:12,093 INFO L229 MonitoredProcess]: Starting monitored process 87 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) [2023-12-24 17:58:12,093 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 (87)] Waiting until timeout for monitored process [2023-12-24 17:58:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:12,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-24 17:58:12,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:12,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:12,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 163 treesize of output 55 [2023-12-24 17:58:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:13,086 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:58:13,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:13,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946186191] [2023-12-24 17:58:13,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946186191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:58:13,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:58:13,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-24 17:58:13,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947671040] [2023-12-24 17:58:13,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:13,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-24 17:58:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-24 17:58:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-12-24 17:58:13,087 INFO L87 Difference]: Start difference. First operand 1271 states and 1459 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:16,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-24 17:58:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:16,253 INFO L93 Difference]: Finished difference Result 2555 states and 2923 transitions. [2023-12-24 17:58:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 17:58:16,253 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 158 [2023-12-24 17:58:16,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:16,254 INFO L225 Difference]: With dead ends: 2555 [2023-12-24 17:58:16,254 INFO L226 Difference]: Without dead ends: 1201 [2023-12-24 17:58:16,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2023-12-24 17:58:16,256 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 101 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:16,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 915 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-24 17:58:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2023-12-24 17:58:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1201. [2023-12-24 17:58:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1132 states have (on average 1.1351590106007068) internal successors, (1285), 1134 states have internal predecessors, (1285), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1369 transitions. [2023-12-24 17:58:16,366 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1369 transitions. Word has length 158 [2023-12-24 17:58:16,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:16,366 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1369 transitions. [2023-12-24 17:58:16,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1369 transitions. [2023-12-24 17:58:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 17:58:16,367 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:16,367 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:16,380 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 (87)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:16,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /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 [2023-12-24 17:58:16,569 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:16,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:16,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1751319604, now seen corresponding path program 1 times [2023-12-24 17:58:16,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:16,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602818365] [2023-12-24 17:58:16,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:16,570 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 [2023-12-24 17:58:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:16,571 INFO L229 MonitoredProcess]: Starting monitored process 88 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) [2023-12-24 17:58:16,572 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 (88)] Waiting until timeout for monitored process [2023-12-24 17:58:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:17,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-24 17:58:17,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:17,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-24 17:58:17,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-12-24 17:58:17,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 17:58:17,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:17,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2023-12-24 17:58:17,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 63 [2023-12-24 17:58:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 17:58:17,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:17,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 105 [2023-12-24 17:58:17,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 50 [2023-12-24 17:58:17,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:17,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 84 [2023-12-24 17:58:18,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:18,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 84 [2023-12-24 17:58:18,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:18,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 135 treesize of output 63 [2023-12-24 17:58:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 291 proven. 48 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-12-24 17:58:18,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:58:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:18,961 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602818365] [2023-12-24 17:58:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602818365] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:58:18,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:58:18,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-12-24 17:58:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719709359] [2023-12-24 17:58:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:58:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:58:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:58:18,964 INFO L87 Difference]: Start difference. First operand 1201 states and 1369 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:19,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:19,462 INFO L93 Difference]: Finished difference Result 2905 states and 3306 transitions. [2023-12-24 17:58:19,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:58:19,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 160 [2023-12-24 17:58:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:19,464 INFO L225 Difference]: With dead ends: 2905 [2023-12-24 17:58:19,464 INFO L226 Difference]: Without dead ends: 1705 [2023-12-24 17:58:19,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:58:19,466 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 86 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:19,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 413 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 17:58:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-12-24 17:58:19,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1649. [2023-12-24 17:58:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1580 states have (on average 1.1329113924050633) internal successors, (1790), 1582 states have internal predecessors, (1790), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 1874 transitions. [2023-12-24 17:58:19,583 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 1874 transitions. Word has length 160 [2023-12-24 17:58:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:19,583 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 1874 transitions. [2023-12-24 17:58:19,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 1874 transitions. [2023-12-24 17:58:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-24 17:58:19,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:19,585 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:19,595 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 (88)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /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 [2023-12-24 17:58:19,793 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:19,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash 853926326, now seen corresponding path program 1 times [2023-12-24 17:58:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808920322] [2023-12-24 17:58:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:19,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 17:58:19,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:19,795 INFO L229 MonitoredProcess]: Starting monitored process 89 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) [2023-12-24 17:58:19,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2023-12-24 17:58:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:20,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:58:20,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:20,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:58:20,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 17:58:20,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2023-12-24 17:58:20,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 17:58:20,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:20,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 87 [2023-12-24 17:58:20,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 17:58:20,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2023-12-24 17:58:20,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:20,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 67 [2023-12-24 17:58:20,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:20,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 67 [2023-12-24 17:58:21,437 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:21,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 55 [2023-12-24 17:58:21,454 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2023-12-24 17:58:21,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:58:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:21,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808920322] [2023-12-24 17:58:21,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808920322] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:58:21,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:58:21,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 17:58:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830093826] [2023-12-24 17:58:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:58:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:58:21,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:58:21,599 INFO L87 Difference]: Start difference. First operand 1649 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:22,280 INFO L93 Difference]: Finished difference Result 3469 states and 3941 transitions. [2023-12-24 17:58:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:58:22,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 160 [2023-12-24 17:58:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:22,282 INFO L225 Difference]: With dead ends: 3469 [2023-12-24 17:58:22,282 INFO L226 Difference]: Without dead ends: 1821 [2023-12-24 17:58:22,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 305 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:58:22,284 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 158 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:22,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 500 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:58:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2023-12-24 17:58:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1646. [2023-12-24 17:58:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1577 states have (on average 1.1312618896639188) internal successors, (1784), 1579 states have internal predecessors, (1784), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 1868 transitions. [2023-12-24 17:58:22,399 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 1868 transitions. Word has length 160 [2023-12-24 17:58:22,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:22,399 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 1868 transitions. [2023-12-24 17:58:22,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 1868 transitions. [2023-12-24 17:58:22,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 17:58:22,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:22,401 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:22,409 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 (89)] Ended with exit code 0 [2023-12-24 17:58:22,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /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 [2023-12-24 17:58:22,609 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:22,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:22,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1403343063, now seen corresponding path program 1 times [2023-12-24 17:58:22,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:22,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28853950] [2023-12-24 17:58:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:22,610 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 [2023-12-24 17:58:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:22,611 INFO L229 MonitoredProcess]: Starting monitored process 90 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) [2023-12-24 17:58:22,645 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 (90)] Waiting until timeout for monitored process [2023-12-24 17:58:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:23,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 17:58:23,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:23,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:58:23,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2023-12-24 17:58:23,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2023-12-24 17:58:23,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:23,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:58:23,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:23,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:58:23,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:23,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-12-24 17:58:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 237 proven. 6 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-24 17:58:23,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:58:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:24,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:24,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28853950] [2023-12-24 17:58:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28853950] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:58:24,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:58:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 22 [2023-12-24 17:58:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409485995] [2023-12-24 17:58:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:24,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 17:58:24,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 17:58:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-12-24 17:58:24,672 INFO L87 Difference]: Start difference. First operand 1646 states and 1868 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:26,175 INFO L93 Difference]: Finished difference Result 2716 states and 3073 transitions. [2023-12-24 17:58:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-24 17:58:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 17:58:26,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:26,200 INFO L225 Difference]: With dead ends: 2716 [2023-12-24 17:58:26,200 INFO L226 Difference]: Without dead ends: 2714 [2023-12-24 17:58:26,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 301 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2023-12-24 17:58:26,201 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 106 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:26,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1510 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 17:58:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2023-12-24 17:58:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 2542. [2023-12-24 17:58:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2473 states have (on average 1.1298018600889608) internal successors, (2794), 2475 states have internal predecessors, (2794), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 2878 transitions. [2023-12-24 17:58:26,313 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 2878 transitions. Word has length 162 [2023-12-24 17:58:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:26,313 INFO L495 AbstractCegarLoop]: Abstraction has 2542 states and 2878 transitions. [2023-12-24 17:58:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 2878 transitions. [2023-12-24 17:58:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 17:58:26,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:26,315 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:26,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /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 [2023-12-24 17:58:26,524 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:26,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1116616871, now seen corresponding path program 1 times [2023-12-24 17:58:26,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915931194] [2023-12-24 17:58:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:26,525 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 [2023-12-24 17:58:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:26,526 INFO L229 MonitoredProcess]: Starting monitored process 91 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) [2023-12-24 17:58:26,550 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 (91)] Waiting until timeout for monitored process [2023-12-24 17:58:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:27,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:58:27,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:27,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:58:27,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-24 17:58:27,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:27,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 47 [2023-12-24 17:58:27,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:27,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 17:58:27,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:27,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2023-12-24 17:58:27,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:27,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 28 [2023-12-24 17:58:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 237 proven. 6 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2023-12-24 17:58:27,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:58:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:28,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915931194] [2023-12-24 17:58:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915931194] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:58:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:58:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-12-24 17:58:28,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564850403] [2023-12-24 17:58:28,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:28,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:58:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:58:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:58:28,116 INFO L87 Difference]: Start difference. First operand 2542 states and 2878 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:28,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:28,808 INFO L93 Difference]: Finished difference Result 5259 states and 5948 transitions. [2023-12-24 17:58:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 17:58:28,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 17:58:28,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:28,810 INFO L225 Difference]: With dead ends: 5259 [2023-12-24 17:58:28,810 INFO L226 Difference]: Without dead ends: 2718 [2023-12-24 17:58:28,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-12-24 17:58:28,813 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 145 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:28,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 492 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:58:28,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2718 states. [2023-12-24 17:58:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2718 to 2542. [2023-12-24 17:58:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2473 states have (on average 1.1285887585928023) internal successors, (2791), 2475 states have internal predecessors, (2791), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 2875 transitions. [2023-12-24 17:58:28,936 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 2875 transitions. Word has length 162 [2023-12-24 17:58:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:28,936 INFO L495 AbstractCegarLoop]: Abstraction has 2542 states and 2875 transitions. [2023-12-24 17:58:28,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 2875 transitions. [2023-12-24 17:58:28,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 17:58:28,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:28,939 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:28,947 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 (91)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /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 [2023-12-24 17:58:29,140 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:29,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 505949785, now seen corresponding path program 1 times [2023-12-24 17:58:29,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:29,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472675242] [2023-12-24 17:58:29,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:29,142 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 [2023-12-24 17:58:29,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:29,143 INFO L229 MonitoredProcess]: Starting monitored process 92 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) [2023-12-24 17:58:29,144 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 (92)] Waiting until timeout for monitored process [2023-12-24 17:58:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:29,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-24 17:58:29,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:29,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-24 17:58:29,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2023-12-24 17:58:29,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2023-12-24 17:58:29,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-24 17:58:29,929 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:29,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 81 [2023-12-24 17:58:29,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 18 [2023-12-24 17:58:30,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:30,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 55 [2023-12-24 17:58:30,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:30,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 55 [2023-12-24 17:58:30,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:30,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 43 [2023-12-24 17:58:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 167 proven. 6 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2023-12-24 17:58:30,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 17:58:30,826 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-24 17:58:30,826 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:30,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472675242] [2023-12-24 17:58:30,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472675242] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 17:58:30,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 17:58:30,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-12-24 17:58:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515686626] [2023-12-24 17:58:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:30,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 17:58:30,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:30,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 17:58:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-12-24 17:58:30,841 INFO L87 Difference]: Start difference. First operand 2542 states and 2875 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:31,591 INFO L93 Difference]: Finished difference Result 5223 states and 5906 transitions. [2023-12-24 17:58:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 17:58:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 162 [2023-12-24 17:58:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:31,595 INFO L225 Difference]: With dead ends: 5223 [2023-12-24 17:58:31,595 INFO L226 Difference]: Without dead ends: 2682 [2023-12-24 17:58:31,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-12-24 17:58:31,597 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 88 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:31,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 446 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-24 17:58:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2023-12-24 17:58:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2542. [2023-12-24 17:58:31,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2473 states have (on average 1.1273756570966438) internal successors, (2788), 2475 states have internal predecessors, (2788), 42 states have call successors, (42), 26 states have call predecessors, (42), 26 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2023-12-24 17:58:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 2872 transitions. [2023-12-24 17:58:31,726 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 2872 transitions. Word has length 162 [2023-12-24 17:58:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:31,726 INFO L495 AbstractCegarLoop]: Abstraction has 2542 states and 2872 transitions. [2023-12-24 17:58:31,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-24 17:58:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 2872 transitions. [2023-12-24 17:58:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-24 17:58:31,728 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 17:58:31,728 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 17:58:31,737 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 (92)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /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 [2023-12-24 17:58:31,936 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 17:58:31,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 17:58:31,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2014010149, now seen corresponding path program 1 times [2023-12-24 17:58:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 17:58:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5895166] [2023-12-24 17:58:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 17:58:31,937 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 [2023-12-24 17:58:31,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 17:58:31,938 INFO L229 MonitoredProcess]: Starting monitored process 93 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) [2023-12-24 17:58:31,939 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 (93)] Waiting until timeout for monitored process [2023-12-24 17:58:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 17:58:32,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-24 17:58:32,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 17:58:32,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2023-12-24 17:58:32,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2023-12-24 17:58:32,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:32,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:58:32,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:32,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2023-12-24 17:58:33,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 17:58:33,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 28 [2023-12-24 17:58:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-24 17:58:33,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 17:58:33,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 17:58:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5895166] [2023-12-24 17:58:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5895166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 17:58:33,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 17:58:33,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-24 17:58:33,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641757824] [2023-12-24 17:58:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 17:58:33,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-24 17:58:33,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 17:58:33,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-24 17:58:33,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-12-24 17:58:33,474 INFO L87 Difference]: Start difference. First operand 2542 states and 2872 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:58:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 17:58:38,487 INFO L93 Difference]: Finished difference Result 2575 states and 2905 transitions. [2023-12-24 17:58:38,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 17:58:38,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 162 [2023-12-24 17:58:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 17:58:38,488 INFO L225 Difference]: With dead ends: 2575 [2023-12-24 17:58:38,488 INFO L226 Difference]: Without dead ends: 0 [2023-12-24 17:58:38,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=210, Invalid=980, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 17:58:38,490 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 162 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-24 17:58:38,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 527 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-24 17:58:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-24 17:58:38,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-24 17:58:38,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-24 17:58:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-24 17:58:38,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 162 [2023-12-24 17:58:38,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 17:58:38,490 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-24 17:58:38,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 17 states have internal predecessors, (81), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-24 17:58:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-24 17:58:38,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-24 17:58:38,492 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 17:58:38,501 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 (93)] Forceful destruction successful, exit code 0 [2023-12-24 17:58:38,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /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 [2023-12-24 17:58:38,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-24 18:00:23,172 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-2-3-5-3-4-6-3-10-3-10-3-10-3-11-4-11-4-11-4-11-4-4-8-9-8-9-8-9-8-9-6-9-6-9-6-12-6-12-6-12-7-12-7-12-7-11-7-11-7-11-7-17-7-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-3-17-3-4-2-4-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 7 xjuncts wrt. a ∧-115-11-7-11-18-12-18-11-12-11-7-11-7-17-7-17-7-17-7-17-7-17-8-17-8-17-8-17-8-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-3-17-3-4-2-4-2-3-1 context. [2023-12-24 18:00:23,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-24 18:00:23,215 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 [2023-12-24 18:00:23,218 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-24 18:00:23,221 INFO L158 Benchmark]: Toolchain (without parser) took 877302.59ms. Allocated memory was 374.3MB in the beginning and 700.4MB in the end (delta: 326.1MB). Free memory was 331.6MB in the beginning and 554.0MB in the end (delta: -222.4MB). Peak memory consumption was 104.0MB. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 221.2MB. Free memory is still 172.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.72ms. Allocated memory is still 374.3MB. Free memory was 331.6MB in the beginning and 313.2MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.14ms. Allocated memory is still 374.3MB. Free memory was 313.2MB in the beginning and 309.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 INFO L158 Benchmark]: Boogie Preprocessor took 56.66ms. Allocated memory is still 374.3MB. Free memory was 309.3MB in the beginning and 303.7MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 INFO L158 Benchmark]: RCFGBuilder took 648.87ms. Allocated memory is still 374.3MB. Free memory was 303.7MB in the beginning and 308.6MB in the end (delta: -4.9MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 INFO L158 Benchmark]: TraceAbstraction took 876312.33ms. Allocated memory was 374.3MB in the beginning and 700.4MB in the end (delta: 326.1MB). Free memory was 308.1MB in the beginning and 554.0MB in the end (delta: -246.0MB). Peak memory consumption was 80.1MB. Max. memory is 8.0GB. [2023-12-24 18:00:23,222 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 221.2MB. Free memory is still 172.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.72ms. Allocated memory is still 374.3MB. Free memory was 331.6MB in the beginning and 313.2MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.14ms. Allocated memory is still 374.3MB. Free memory was 313.2MB in the beginning and 309.3MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 56.66ms. Allocated memory is still 374.3MB. Free memory was 309.3MB in the beginning and 303.7MB in the end (delta: 5.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 648.87ms. Allocated memory is still 374.3MB. Free memory was 303.7MB in the beginning and 308.6MB in the end (delta: -4.9MB). Peak memory consumption was 15.5MB. Max. memory is 8.0GB. * TraceAbstraction took 876312.33ms. Allocated memory was 374.3MB in the beginning and 700.4MB in the end (delta: 326.1MB). Free memory was 308.1MB in the beginning and 554.0MB in the end (delta: -246.0MB). Peak memory consumption was 80.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-2-3-5-3-4-6-3-10-3-10-3-10-3-11-4-11-4-11-4-11-4-4-8-9-8-9-8-9-8-9-6-9-6-9-6-12-6-12-6-12-7-12-7-12-7-11-7-11-7-11-7-17-7-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-3-17-3-4-2-4-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-84-11-7-11-7-11-7-11-7-11-7-11-9-11-11-11-11-11-10-17-17-17-17-17-17-17-17-17-17-17-17-17-17-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-7-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-5-17-3-17-3-4-2-4-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown