/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-sp_file-25.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 19:25:11,017 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 19:25:11,086 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 19:25:11,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 19:25:11,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 19:25:11,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 19:25:11,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 19:25:11,113 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 19:25:11,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 19:25:11,117 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 19:25:11,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 19:25:11,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 19:25:11,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 19:25:11,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 19:25:11,118 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 19:25:11,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 19:25:11,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 19:25:11,119 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 19:25:11,119 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 19:25:11,119 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 19:25:11,119 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 19:25:11,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 19:25:11,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 19:25:11,120 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 19:25:11,120 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 19:25:11,121 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 19:25:11,121 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 19:25:11,121 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 19:25:11,121 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 19:25:11,121 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 19:25:11,122 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 19:25:11,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 19:25:11,122 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 19:25:11,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 19:25:11,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 19:25:11,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 19:25:11,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 19:25:11,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 19:25:11,123 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 19:25:11,123 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 19:25:11,123 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 19:25:11,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 19:25:11,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 19:25:11,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 19:25:11,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 19:25:11,124 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 19:25:11,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 19:25:11,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 19:25:11,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 19:25:11,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 19:25:11,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 19:25:11,340 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 19:25:11,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i [2023-12-24 19:25:12,426 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 19:25:12,636 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 19:25:12,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-25.i [2023-12-24 19:25:12,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b58c9da8/0d3a18e7fb8c46eba6e4acefbaec7727/FLAG165abc4b7 [2023-12-24 19:25:12,661 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b58c9da8/0d3a18e7fb8c46eba6e4acefbaec7727 [2023-12-24 19:25:12,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 19:25:12,664 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 19:25:12,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 19:25:12,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 19:25:12,669 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 19:25:12,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:12,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117af2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12, skipping insertion in model container [2023-12-24 19:25:12,671 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:12,703 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 19:25:12,827 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-sp_file-25.i[917,930] [2023-12-24 19:25:12,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 19:25:12,910 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 19:25:12,922 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-sp_file-25.i[917,930] [2023-12-24 19:25:12,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 19:25:12,963 INFO L206 MainTranslator]: Completed translation [2023-12-24 19:25:12,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12 WrapperNode [2023-12-24 19:25:12,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 19:25:12,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 19:25:12,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 19:25:12,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 19:25:12,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:12,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,026 INFO L138 Inliner]: procedures = 36, calls = 176, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 566 [2023-12-24 19:25:13,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 19:25:13,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 19:25:13,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 19:25:13,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 19:25:13,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,053 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,082 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 19:25:13,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,129 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 19:25:13,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 19:25:13,154 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 19:25:13,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 19:25:13,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (1/1) ... [2023-12-24 19:25:13,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 19:25:13,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 19:25:13,216 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 19:25:13,220 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 19:25:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 19:25:13,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-12-24 19:25:13,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-12-24 19:25:13,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2023-12-24 19:25:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2023-12-24 19:25:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 19:25:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-24 19:25:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-12-24 19:25:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-12-24 19:25:13,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#0 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2#1 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2023-12-24 19:25:13,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2023-12-24 19:25:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 19:25:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 19:25:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 19:25:13,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 19:25:13,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-12-24 19:25:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-12-24 19:25:13,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#0 [2023-12-24 19:25:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2#1 [2023-12-24 19:25:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-24 19:25:13,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-24 19:25:13,409 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 19:25:13,411 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 19:25:13,977 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 19:25:14,024 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 19:25:14,024 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 19:25:14,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:25:14 BoogieIcfgContainer [2023-12-24 19:25:14,024 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 19:25:14,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 19:25:14,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 19:25:14,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 19:25:14,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 07:25:12" (1/3) ... [2023-12-24 19:25:14,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c77ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:25:14, skipping insertion in model container [2023-12-24 19:25:14,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 07:25:12" (2/3) ... [2023-12-24 19:25:14,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c77ee2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 07:25:14, skipping insertion in model container [2023-12-24 19:25:14,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 07:25:14" (3/3) ... [2023-12-24 19:25:14,066 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-25.i [2023-12-24 19:25:14,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 19:25:14,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 19:25:14,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 19:25:14,152 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;@343f5a84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 19:25:14,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 19:25:14,161 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 19:25:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 19:25:14,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:14,174 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 19:25:14,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:14,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash -140249938, now seen corresponding path program 1 times [2023-12-24 19:25:14,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:14,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637422463] [2023-12-24 19:25:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:14,198 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 19:25:14,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:14,201 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 19:25:14,206 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 19:25:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:14,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 19:25:14,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:14,625 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 19:25:14,626 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:25:14,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637422463] [2023-12-24 19:25:14,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637422463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:25:14,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:25:14,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 19:25:14,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287169613] [2023-12-24 19:25:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:14,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 19:25:14,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:14,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 19:25:14,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 19:25:14,663 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 19:25:14,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:14,709 INFO L93 Difference]: Finished difference Result 231 states and 368 transitions. [2023-12-24 19:25:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 19:25:14,711 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 19:25:14,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:14,716 INFO L225 Difference]: With dead ends: 231 [2023-12-24 19:25:14,717 INFO L226 Difference]: Without dead ends: 115 [2023-12-24 19:25:14,719 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 19:25:14,722 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 19:25:14,722 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 19:25:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-24 19:25:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-24 19:25:14,755 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 19:25:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-12-24 19:25:14,758 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 139 [2023-12-24 19:25:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:14,758 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-12-24 19:25:14,759 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 19:25:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-12-24 19:25:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-24 19:25:14,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:14,762 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 19:25:14,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-24 19:25:14,971 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 19:25:14,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:14,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:14,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1033622798, now seen corresponding path program 1 times [2023-12-24 19:25:14,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:14,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068066076] [2023-12-24 19:25:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:14,976 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 19:25:14,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:14,978 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 19:25:14,979 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 19:25:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:15,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-24 19:25:15,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:16,539 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-12-24 19:25:16,540 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 1 case distinctions, treesize of input 36 treesize of output 31 [2023-12-24 19:25:16,583 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 18 treesize of output 10 [2023-12-24 19:25:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 19:25:16,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:25:17,059 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 19:25:17,059 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 36 treesize of output 29 [2023-12-24 19:25:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 19:25:17,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068066076] [2023-12-24 19:25:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068066076] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 19:25:17,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 19:25:17,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 25 [2023-12-24 19:25:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615591683] [2023-12-24 19:25:17,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:17,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-24 19:25:17,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-24 19:25:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2023-12-24 19:25:17,295 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (18), 1 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 19:25:22,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:22,575 INFO L93 Difference]: Finished difference Result 289 states and 428 transitions. [2023-12-24 19:25:22,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-24 19:25:22,575 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (18), 1 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 19:25:22,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:22,578 INFO L225 Difference]: With dead ends: 289 [2023-12-24 19:25:22,578 INFO L226 Difference]: Without dead ends: 175 [2023-12-24 19:25:22,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2023-12-24 19:25:22,579 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 399 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 19:25:22,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 505 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 19:25:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-12-24 19:25:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2023-12-24 19:25:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 126 states have (on average 1.3650793650793651) internal successors, (172), 127 states have internal predecessors, (172), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 19:25:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 240 transitions. [2023-12-24 19:25:22,612 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 240 transitions. Word has length 139 [2023-12-24 19:25:22,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:22,616 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 240 transitions. [2023-12-24 19:25:22,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 3 states have call successors, (18), 1 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 19:25:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 240 transitions. [2023-12-24 19:25:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-24 19:25:22,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:22,618 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 19:25:22,626 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 19:25:22,824 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 19:25:22,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:22,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:22,825 INFO L85 PathProgramCache]: Analyzing trace with hash 555964663, now seen corresponding path program 1 times [2023-12-24 19:25:22,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:22,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493326296] [2023-12-24 19:25:22,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:22,825 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 19:25:22,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:22,827 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 19:25:22,828 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 19:25:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:23,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-24 19:25:23,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:26,250 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 36 treesize of output 27 [2023-12-24 19:25:26,440 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 0 case distinctions, treesize of input 47 treesize of output 30 [2023-12-24 19:25:26,533 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:25:26,534 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 47 treesize of output 30 [2023-12-24 19:25:26,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:25:26,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-24 19:25:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 19:25:26,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:25:27,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:27,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493326296] [2023-12-24 19:25:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493326296] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:25:27,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [731050855] [2023-12-24 19:25:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:27,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:25:27,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:25:27,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:25:27,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-24 19:25:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:28,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 19:25:28,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:30,009 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 19:25:30,210 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 25 treesize of output 13 [2023-12-24 19:25:30,307 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 25 treesize of output 13 [2023-12-24 19:25:30,350 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 18 treesize of output 10 [2023-12-24 19:25:30,516 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 19:25:30,517 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:25:30,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [731050855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:25:30,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 19:25:30,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2023-12-24 19:25:30,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938771002] [2023-12-24 19:25:30,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:30,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-24 19:25:30,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-24 19:25:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2023-12-24 19:25:30,519 INFO L87 Difference]: Start difference. First operand 163 states and 240 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 19:25:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:31,831 INFO L93 Difference]: Finished difference Result 366 states and 539 transitions. [2023-12-24 19:25:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 19:25:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 140 [2023-12-24 19:25:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:31,834 INFO L225 Difference]: With dead ends: 366 [2023-12-24 19:25:31,835 INFO L226 Difference]: Without dead ends: 246 [2023-12-24 19:25:31,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2023-12-24 19:25:31,836 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 302 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-24 19:25:31,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 485 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-24 19:25:31,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-24 19:25:31,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 179. [2023-12-24 19:25:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.380281690140845) internal successors, (196), 143 states have internal predecessors, (196), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 19:25:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 264 transitions. [2023-12-24 19:25:31,854 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 264 transitions. Word has length 140 [2023-12-24 19:25:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 264 transitions. [2023-12-24 19:25:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 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 19:25:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 264 transitions. [2023-12-24 19:25:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 19:25:31,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:31,856 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 19:25:31,865 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 19:25:32,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-24 19:25:32,265 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 19:25:32,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:32,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash 753777650, now seen corresponding path program 1 times [2023-12-24 19:25:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156197276] [2023-12-24 19:25:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:32,266 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 19:25:32,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:32,267 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 19:25:32,307 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 19:25:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:32,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-24 19:25:32,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:36,219 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 36 treesize of output 27 [2023-12-24 19:25:36,397 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 0 case distinctions, treesize of input 47 treesize of output 30 [2023-12-24 19:25:36,512 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 0 case distinctions, treesize of input 47 treesize of output 30 [2023-12-24 19:25:36,615 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:25:36,615 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 47 treesize of output 30 [2023-12-24 19:25:36,654 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:25:36,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2023-12-24 19:25:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 19:25:36,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:25:37,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156197276] [2023-12-24 19:25:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156197276] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:25:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [398096718] [2023-12-24 19:25:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:37,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:25:37,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:25:37,939 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:25:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-24 19:25:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:39,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 19:25:39,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:41,649 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 19:25:41,831 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 25 treesize of output 13 [2023-12-24 19:25:41,945 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 25 treesize of output 13 [2023-12-24 19:25:42,035 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 25 treesize of output 13 [2023-12-24 19:25:42,101 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 18 treesize of output 10 [2023-12-24 19:25:42,293 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 19:25:42,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:25:42,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [398096718] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:25:42,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 19:25:42,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 23 [2023-12-24 19:25:42,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065061274] [2023-12-24 19:25:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:42,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 19:25:42,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:42,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 19:25:42,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2023-12-24 19:25:42,295 INFO L87 Difference]: Start difference. First operand 179 states and 264 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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 19:25:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:43,885 INFO L93 Difference]: Finished difference Result 398 states and 587 transitions. [2023-12-24 19:25:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-24 19:25:43,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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 19:25:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:43,887 INFO L225 Difference]: With dead ends: 398 [2023-12-24 19:25:43,887 INFO L226 Difference]: Without dead ends: 262 [2023-12-24 19:25:43,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 281 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2023-12-24 19:25:43,889 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 346 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-24 19:25:43,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 484 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-24 19:25:43,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-24 19:25:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 179. [2023-12-24 19:25:43,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 142 states have (on average 1.380281690140845) internal successors, (196), 143 states have internal predecessors, (196), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 19:25:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 264 transitions. [2023-12-24 19:25:43,906 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 264 transitions. Word has length 142 [2023-12-24 19:25:43,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:43,906 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 264 transitions. [2023-12-24 19:25:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 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 19:25:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 264 transitions. [2023-12-24 19:25:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-24 19:25:43,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:43,915 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 19:25:43,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-24 19:25:44,136 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 19:25:44,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 19:25:44,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:44,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash 973982885, now seen corresponding path program 1 times [2023-12-24 19:25:44,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:44,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [230449236] [2023-12-24 19:25:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:44,337 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 19:25:44,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:44,342 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 19:25:44,343 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 19:25:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:44,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-24 19:25:44,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:44,624 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 19:25:44,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:25:44,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:44,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [230449236] [2023-12-24 19:25:44,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [230449236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:25:44,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:25:44,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 19:25:44,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125935551] [2023-12-24 19:25:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:44,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 19:25:44,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:44,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 19:25:44,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 19:25:44,626 INFO L87 Difference]: Start difference. First operand 179 states and 264 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 19:25:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:44,693 INFO L93 Difference]: Finished difference Result 345 states and 508 transitions. [2023-12-24 19:25:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-24 19:25:44,694 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 19:25:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:44,695 INFO L225 Difference]: With dead ends: 345 [2023-12-24 19:25:44,695 INFO L226 Difference]: Without dead ends: 209 [2023-12-24 19:25:44,696 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 19:25:44,697 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 19:25:44,698 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 19:25:44,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-24 19:25:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 182. [2023-12-24 19:25:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 145 states have (on average 1.3724137931034484) internal successors, (199), 146 states have internal predecessors, (199), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 19:25:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 267 transitions. [2023-12-24 19:25:44,739 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 267 transitions. Word has length 142 [2023-12-24 19:25:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:44,739 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 267 transitions. [2023-12-24 19:25:44,739 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 19:25:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 267 transitions. [2023-12-24 19:25:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 19:25:44,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:44,743 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] [2023-12-24 19:25:44,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-24 19:25:44,951 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 19:25:44,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:44,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1339725859, now seen corresponding path program 1 times [2023-12-24 19:25:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:44,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86391011] [2023-12-24 19:25:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:44,953 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 19:25:44,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:44,954 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 19:25:44,956 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 19:25:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:45,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 19:25:45,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:45,229 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 12 treesize of output 8 [2023-12-24 19:25:45,236 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 17 treesize of output 9 [2023-12-24 19:25:45,242 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 19:25:45,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 19:25:45,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:45,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86391011] [2023-12-24 19:25:45,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86391011] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 19:25:45,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 19:25:45,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-24 19:25:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171581745] [2023-12-24 19:25:45,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:45,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-24 19:25:45,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:45,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-24 19:25:45,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-24 19:25:45,244 INFO L87 Difference]: Start difference. First operand 182 states and 267 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 19:25:45,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:45,621 INFO L93 Difference]: Finished difference Result 333 states and 487 transitions. [2023-12-24 19:25:45,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-24 19:25:45,623 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 19:25:45,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:45,624 INFO L225 Difference]: With dead ends: 333 [2023-12-24 19:25:45,624 INFO L226 Difference]: Without dead ends: 194 [2023-12-24 19:25:45,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 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 19:25:45,625 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 13 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-24 19:25:45,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 580 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-24 19:25:45,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-24 19:25:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2023-12-24 19:25:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 146 states have (on average 1.36986301369863) internal successors, (200), 147 states have internal predecessors, (200), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 19:25:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 268 transitions. [2023-12-24 19:25:45,645 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 268 transitions. Word has length 143 [2023-12-24 19:25:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:45,648 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 268 transitions. [2023-12-24 19:25:45,649 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 19:25:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 268 transitions. [2023-12-24 19:25:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-24 19:25:45,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:45,651 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 19:25:45,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 19:25:45,864 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 19:25:45,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:45,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1205712353, now seen corresponding path program 1 times [2023-12-24 19:25:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:45,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334004886] [2023-12-24 19:25:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:45,865 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 19:25:45,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:45,867 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 19:25:45,889 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 19:25:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:46,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-24 19:25:46,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:47,179 INFO L349 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2023-12-24 19:25:47,180 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 1 case distinctions, treesize of input 31 treesize of output 30 [2023-12-24 19:25:47,204 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 17 treesize of output 9 [2023-12-24 19:25:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 68 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-12-24 19:25:47,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:25:47,619 INFO L349 Elim1Store]: treesize reduction 4, result has 69.2 percent of original size [2023-12-24 19:25:47,620 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 27 [2023-12-24 19:25:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2023-12-24 19:25:47,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:25:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334004886] [2023-12-24 19:25:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334004886] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 19:25:47,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 19:25:47,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 27 [2023-12-24 19:25:47,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211041281] [2023-12-24 19:25:47,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 19:25:47,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-24 19:25:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:25:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-24 19:25:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-12-24 19:25:47,839 INFO L87 Difference]: Start difference. First operand 183 states and 268 transitions. Second operand has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (18), 1 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 19:25:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:25:53,161 INFO L93 Difference]: Finished difference Result 316 states and 458 transitions. [2023-12-24 19:25:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-24 19:25:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (18), 1 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 19:25:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:25:53,162 INFO L225 Difference]: With dead ends: 316 [2023-12-24 19:25:53,162 INFO L226 Difference]: Without dead ends: 176 [2023-12-24 19:25:53,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2023-12-24 19:25:53,163 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 373 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-24 19:25:53,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 572 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-24 19:25:53,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-24 19:25:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 164. [2023-12-24 19:25:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 127 states have (on average 1.3464566929133859) internal successors, (171), 128 states have internal predecessors, (171), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-12-24 19:25:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 239 transitions. [2023-12-24 19:25:53,185 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 239 transitions. Word has length 143 [2023-12-24 19:25:53,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:25:53,185 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 239 transitions. [2023-12-24 19:25:53,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (18), 1 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 19:25:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 239 transitions. [2023-12-24 19:25:53,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-24 19:25:53,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:25:53,187 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] [2023-12-24 19:25:53,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 19:25:53,395 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 19:25:53,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:25:53,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:25:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1934792640, now seen corresponding path program 1 times [2023-12-24 19:25:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:25:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438101289] [2023-12-24 19:25:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:25:53,397 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 19:25:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:25:53,398 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 19:25:53,404 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 19:25:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:25:53,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-24 19:25:53,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:25:54,241 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 19:25:54,596 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 19:25:54,970 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 19:25:55,299 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 19:25:55,651 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 19:25:55,979 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 19:25:56,290 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 19:25:56,553 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 12 treesize of output 8 [2023-12-24 19:25:56,963 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 21 treesize of output 20 [2023-12-24 19:25:57,316 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 0 case distinctions, treesize of input 32 treesize of output 23 [2023-12-24 19:25:57,596 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 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 19:25:57,728 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 0 case distinctions, treesize of input 48 treesize of output 45 [2023-12-24 19:25:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 112 proven. 128 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2023-12-24 19:25:57,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:26:17,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:26:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438101289] [2023-12-24 19:26:17,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438101289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:26:17,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2076683936] [2023-12-24 19:26:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:26:17,650 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:26:17,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:26:17,651 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:26:17,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 19:26:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:26:19,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-24 19:26:19,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:26:21,357 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 19:26:22,487 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 19:26:22,888 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 19:26:23,398 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 19:26:23,927 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 19:26:24,162 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 70 treesize of output 34 [2023-12-24 19:26:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 192 proven. 128 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 19:26:24,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:26:24,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2076683936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:26:24,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:26:24,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 19 [2023-12-24 19:26:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724661639] [2023-12-24 19:26:24,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:26:24,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-24 19:26:24,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:26:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-24 19:26:24,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=814, Unknown=2, NotChecked=0, Total=930 [2023-12-24 19:26:24,785 INFO L87 Difference]: Start difference. First operand 164 states and 239 transitions. Second operand has 20 states, 20 states have (on average 5.7) internal successors, (114), 19 states have internal predecessors, (114), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 19:26:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:26:37,986 INFO L93 Difference]: Finished difference Result 557 states and 795 transitions. [2023-12-24 19:26:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-24 19:26:37,987 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 19 states have internal predecessors, (114), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 144 [2023-12-24 19:26:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:26:37,988 INFO L225 Difference]: With dead ends: 557 [2023-12-24 19:26:37,988 INFO L226 Difference]: Without dead ends: 436 [2023-12-24 19:26:37,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 25.7s TimeCoverageRelationStatistics Valid=585, Invalid=2493, Unknown=2, NotChecked=0, Total=3080 [2023-12-24 19:26:37,990 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1381 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-24 19:26:37,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 870 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-24 19:26:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-12-24 19:26:38,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 415. [2023-12-24 19:26:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 328 states have (on average 1.3414634146341464) internal successors, (440), 333 states have internal predecessors, (440), 76 states have call successors, (76), 10 states have call predecessors, (76), 10 states have return successors, (76), 71 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-24 19:26:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 592 transitions. [2023-12-24 19:26:38,041 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 592 transitions. Word has length 144 [2023-12-24 19:26:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:26:38,041 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 592 transitions. [2023-12-24 19:26:38,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.7) internal successors, (114), 19 states have internal predecessors, (114), 6 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-12-24 19:26:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 592 transitions. [2023-12-24 19:26:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 19:26:38,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:26:38,042 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 19:26:38,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-24 19:26:38,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 19:26:38,463 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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 19:26:38,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:26:38,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:26:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash -51575493, now seen corresponding path program 1 times [2023-12-24 19:26:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:26:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862407965] [2023-12-24 19:26:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:26:38,465 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 19:26:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:26:38,467 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 19:26:38,468 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 19:26:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:26:38,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-24 19:26:38,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:26:40,014 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 19:26:40,903 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 12 treesize of output 8 [2023-12-24 19:26:41,929 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 24 treesize of output 12 [2023-12-24 19:26:42,909 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 24 treesize of output 12 [2023-12-24 19:26:43,794 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 24 treesize of output 12 [2023-12-24 19:26:44,770 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 24 treesize of output 12 [2023-12-24 19:26:45,434 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 24 treesize of output 12 [2023-12-24 19:26:46,092 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 24 treesize of output 12 [2023-12-24 19:26:47,025 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 24 treesize of output 12 [2023-12-24 19:26:48,013 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 24 treesize of output 12 [2023-12-24 19:26:48,450 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 0 case distinctions, treesize of input 38 treesize of output 46 [2023-12-24 19:26:48,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 49 [2023-12-24 19:26:49,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 49 [2023-12-24 19:26:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 192 proven. 128 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-24 19:26:50,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:27:36,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:27:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862407965] [2023-12-24 19:27:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862407965] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:27:36,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508656542] [2023-12-24 19:27:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:27:36,163 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:27:36,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:27:36,164 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:27:36,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-24 19:27:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:27:37,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 19:27:37,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:27:40,926 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 19:27:42,686 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 19:27:43,185 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 61 treesize of output 40 [2023-12-24 19:27:44,322 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 0 case distinctions, treesize of input 69 treesize of output 51 [2023-12-24 19:27:45,392 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 0 case distinctions, treesize of input 80 treesize of output 54 [2023-12-24 19:27:45,917 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 0 case distinctions, treesize of input 80 treesize of output 54 [2023-12-24 19:27:46,275 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 0 case distinctions, treesize of input 86 treesize of output 42 [2023-12-24 19:27:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 208 proven. 128 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-24 19:27:46,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:27:48,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [508656542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:27:48,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:27:48,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-12-24 19:27:48,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576896810] [2023-12-24 19:27:48,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:27:48,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 19:27:48,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:27:48,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 19:27:48,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1343, Unknown=7, NotChecked=0, Total=1482 [2023-12-24 19:27:48,634 INFO L87 Difference]: Start difference. First operand 415 states and 592 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 24 states have internal predecessors, (126), 7 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2023-12-24 19:28:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:28:32,425 INFO L93 Difference]: Finished difference Result 1191 states and 1692 transitions. [2023-12-24 19:28:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-24 19:28:32,427 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 24 states have internal predecessors, (126), 7 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 146 [2023-12-24 19:28:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:28:32,430 INFO L225 Difference]: With dead ends: 1191 [2023-12-24 19:28:32,430 INFO L226 Difference]: Without dead ends: 833 [2023-12-24 19:28:32,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 68.0s TimeCoverageRelationStatistics Valid=1163, Invalid=4992, Unknown=7, NotChecked=0, Total=6162 [2023-12-24 19:28:32,432 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 2188 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 4035 mSolverCounterSat, 213 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2188 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 4252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 4035 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.5s IncrementalHoareTripleChecker+Time [2023-12-24 19:28:32,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2188 Valid, 1760 Invalid, 4252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [213 Valid, 4035 Invalid, 4 Unknown, 0 Unchecked, 26.5s Time] [2023-12-24 19:28:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-24 19:28:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 603. [2023-12-24 19:28:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 505 states have (on average 1.3623762376237625) internal successors, (688), 511 states have internal predecessors, (688), 84 states have call successors, (84), 13 states have call predecessors, (84), 13 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-24 19:28:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 856 transitions. [2023-12-24 19:28:32,510 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 856 transitions. Word has length 146 [2023-12-24 19:28:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:28:32,513 INFO L495 AbstractCegarLoop]: Abstraction has 603 states and 856 transitions. [2023-12-24 19:28:32,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 24 states have internal predecessors, (126), 7 states have call successors, (36), 7 states have call predecessors, (36), 7 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2023-12-24 19:28:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 856 transitions. [2023-12-24 19:28:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 19:28:32,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:28:32,514 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 19:28:32,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-12-24 19:28:32,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-24 19:28:32,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 19:28:32,924 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:28:32,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:28:32,924 INFO L85 PathProgramCache]: Analyzing trace with hash 425444663, now seen corresponding path program 1 times [2023-12-24 19:28:32,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:28:32,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597925164] [2023-12-24 19:28:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:28:32,925 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 19:28:32,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:28:32,926 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 19:28:32,936 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 (15)] Waiting until timeout for monitored process [2023-12-24 19:28:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:28:33,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 55 conjunts are in the unsatisfiable core [2023-12-24 19:28:33,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:28:34,611 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 19:28:35,677 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 12 treesize of output 8 [2023-12-24 19:28:36,912 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 24 treesize of output 12 [2023-12-24 19:28:38,532 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:28:39,821 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:28:41,120 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:28:42,045 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:28:43,017 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 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 19:28:44,581 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:28:45,708 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:28:46,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 49 [2023-12-24 19:28:47,014 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 0 case distinctions, treesize of input 60 treesize of output 49 [2023-12-24 19:28:47,460 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 0 case distinctions, treesize of input 60 treesize of output 49 [2023-12-24 19:28:47,914 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:28:47,914 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 65 treesize of output 33 [2023-12-24 19:28:48,009 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 353 proven. 152 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-24 19:28:48,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:29:26,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:29:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597925164] [2023-12-24 19:29:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597925164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:29:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587100595] [2023-12-24 19:29:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:29:26,650 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:29:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:29:26,651 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:29:26,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2023-12-24 19:29:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:29:28,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-24 19:29:28,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:29:29,535 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 19:29:30,671 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 19:29:31,081 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 19:29:31,469 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 19:29:31,729 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 19:29:31,988 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 20 treesize of output 19 [2023-12-24 19:29:32,615 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 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 19:29:33,292 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:29:34,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:29:34,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 62 treesize of output 114 [2023-12-24 19:29:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 301 proven. 152 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-12-24 19:29:34,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:29:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587100595] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:29:41,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:29:41,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 27 [2023-12-24 19:29:41,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049170417] [2023-12-24 19:29:41,338 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:29:41,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 19:29:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:29:41,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 19:29:41,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1455, Unknown=8, NotChecked=0, Total=1640 [2023-12-24 19:29:41,339 INFO L87 Difference]: Start difference. First operand 603 states and 856 transitions. Second operand has 28 states, 26 states have (on average 5.153846153846154) internal successors, (134), 27 states have internal predecessors, (134), 11 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 19:29:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:29:54,343 INFO L93 Difference]: Finished difference Result 1123 states and 1541 transitions. [2023-12-24 19:29:54,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-24 19:29:54,344 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.153846153846154) internal successors, (134), 27 states have internal predecessors, (134), 11 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) Word has length 146 [2023-12-24 19:29:54,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:29:54,348 INFO L225 Difference]: With dead ends: 1123 [2023-12-24 19:29:54,349 INFO L226 Difference]: Without dead ends: 565 [2023-12-24 19:29:54,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 54.1s TimeCoverageRelationStatistics Valid=587, Invalid=3187, Unknown=8, NotChecked=0, Total=3782 [2023-12-24 19:29:54,351 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 596 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-24 19:29:54,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 687 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2023-12-24 19:29:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-12-24 19:29:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 415. [2023-12-24 19:29:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 345 states have (on average 1.336231884057971) internal successors, (461), 349 states have internal predecessors, (461), 54 states have call successors, (54), 15 states have call predecessors, (54), 15 states have return successors, (54), 50 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 19:29:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 569 transitions. [2023-12-24 19:29:54,415 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 569 transitions. Word has length 146 [2023-12-24 19:29:54,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:29:54,415 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 569 transitions. [2023-12-24 19:29:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.153846153846154) internal successors, (134), 27 states have internal predecessors, (134), 11 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 19:29:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 569 transitions. [2023-12-24 19:29:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 19:29:54,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:29:54,417 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 19:29:54,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2023-12-24 19:29:54,634 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 (15)] Forceful destruction successful, exit code 0 [2023-12-24 19:29:54,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 19:29:54,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:29:54,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:29:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 229318839, now seen corresponding path program 1 times [2023-12-24 19:29:54,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:29:54,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853506577] [2023-12-24 19:29:54,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:29:54,833 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 19:29:54,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:29:54,834 INFO L229 MonitoredProcess]: Starting monitored process 17 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 19:29:54,837 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 (17)] Waiting until timeout for monitored process [2023-12-24 19:29:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:29:55,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-24 19:29:55,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:29:56,818 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 19:29:57,994 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 12 treesize of output 8 [2023-12-24 19:29:59,537 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 24 treesize of output 12 [2023-12-24 19:30:01,552 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:02,987 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:04,496 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:05,560 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:06,850 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:08,425 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 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 19:30:09,953 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:30:10,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2023-12-24 19:30:11,449 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 0 case distinctions, treesize of input 58 treesize of output 51 [2023-12-24 19:30:11,921 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 0 case distinctions, treesize of input 58 treesize of output 51 [2023-12-24 19:30:12,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:30:12,377 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 81 treesize of output 41 [2023-12-24 19:30:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 305 proven. 152 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-12-24 19:30:12,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:30:45,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:30:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853506577] [2023-12-24 19:30:45,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853506577] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:30:45,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [378053442] [2023-12-24 19:30:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:30:45,914 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:30:45,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:30:45,915 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:30:45,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-24 19:30:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:30:48,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-24 19:30:48,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:30:50,709 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 12 treesize of output 8 [2023-12-24 19:30:52,229 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 24 treesize of output 12 [2023-12-24 19:30:54,583 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:55,944 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:57,320 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:58,318 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:30:59,412 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 0 case distinctions, treesize of input 28 treesize of output 30 [2023-12-24 19:31:01,215 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:31:02,797 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:31:03,507 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:31:04,118 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:31:04,740 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 0 case distinctions, treesize of input 39 treesize of output 33 [2023-12-24 19:31:05,700 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-24 19:31:05,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 54 [2023-12-24 19:31:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 353 proven. 152 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-12-24 19:31:05,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:33:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [378053442] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:33:09,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:33:09,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2023-12-24 19:33:09,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101372561] [2023-12-24 19:33:09,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:33:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-24 19:33:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:33:09,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-24 19:33:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1571, Unknown=34, NotChecked=0, Total=1892 [2023-12-24 19:33:09,266 INFO L87 Difference]: Start difference. First operand 415 states and 569 transitions. Second operand has 30 states, 28 states have (on average 4.75) internal successors, (133), 29 states have internal predecessors, (133), 11 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 19:33:33,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 19:33:33,926 INFO L93 Difference]: Finished difference Result 913 states and 1239 transitions. [2023-12-24 19:33:33,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-24 19:33:33,927 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.75) internal successors, (133), 29 states have internal predecessors, (133), 11 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) Word has length 146 [2023-12-24 19:33:33,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 19:33:33,929 INFO L225 Difference]: With dead ends: 913 [2023-12-24 19:33:33,929 INFO L226 Difference]: Without dead ends: 511 [2023-12-24 19:33:33,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 311 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 168.7s TimeCoverageRelationStatistics Valid=1130, Invalid=3806, Unknown=34, NotChecked=0, Total=4970 [2023-12-24 19:33:33,931 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 1111 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2023-12-24 19:33:33,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 876 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2023-12-24 19:33:33,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-12-24 19:33:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 427. [2023-12-24 19:33:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 354 states have (on average 1.3220338983050848) internal successors, (468), 358 states have internal predecessors, (468), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (54), 50 states have call predecessors, (54), 54 states have call successors, (54) [2023-12-24 19:33:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 576 transitions. [2023-12-24 19:33:33,999 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 576 transitions. Word has length 146 [2023-12-24 19:33:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 19:33:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 576 transitions. [2023-12-24 19:33:34,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.75) internal successors, (133), 29 states have internal predecessors, (133), 11 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (36), 9 states have call predecessors, (36), 11 states have call successors, (36) [2023-12-24 19:33:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 576 transitions. [2023-12-24 19:33:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-24 19:33:34,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 19:33:34,002 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 19:33:34,012 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 (17)] Forceful destruction successful, exit code 0 [2023-12-24 19:33:34,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-24 19:33:34,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -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 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 19:33:34,421 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 19:33:34,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 19:33:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash 487484277, now seen corresponding path program 1 times [2023-12-24 19:33:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 19:33:34,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965339111] [2023-12-24 19:33:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:33:34,422 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 19:33:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 19:33:34,423 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 19:33:34,424 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 19:33:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:33:35,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 79 conjunts are in the unsatisfiable core [2023-12-24 19:33:35,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:33:39,575 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 19:33:41,170 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 19:33:43,549 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 19:33:47,233 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 0 case distinctions, treesize of input 37 treesize of output 24 [2023-12-24 19:33:50,561 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 0 case distinctions, treesize of input 44 treesize of output 34 [2023-12-24 19:33:52,297 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 0 case distinctions, treesize of input 44 treesize of output 34 [2023-12-24 19:33:53,943 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 0 case distinctions, treesize of input 44 treesize of output 34 [2023-12-24 19:33:56,066 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 0 case distinctions, treesize of input 44 treesize of output 34 [2023-12-24 19:33:58,521 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 0 case distinctions, treesize of input 44 treesize of output 34 [2023-12-24 19:33:59,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 55 [2023-12-24 19:34:01,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 61 [2023-12-24 19:34:03,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 68 [2023-12-24 19:34:14,346 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 307 proven. 185 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-24 19:34:14,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:36:14,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 19:36:14,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965339111] [2023-12-24 19:36:14,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965339111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:36:14,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1794148982] [2023-12-24 19:36:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 19:36:14,477 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 19:36:14,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 19:36:14,479 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 19:36:14,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-24 19:36:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 19:36:18,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 80 conjunts are in the unsatisfiable core [2023-12-24 19:36:18,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 19:36:23,902 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 12 treesize of output 8 [2023-12-24 19:36:26,541 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 24 treesize of output 12 [2023-12-24 19:36:31,104 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 0 case distinctions, treesize of input 31 treesize of output 22 [2023-12-24 19:36:39,141 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 0 case distinctions, treesize of input 45 treesize of output 35 [2023-12-24 19:36:45,572 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 0 case distinctions, treesize of input 52 treesize of output 45 [2023-12-24 19:36:47,607 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 0 case distinctions, treesize of input 52 treesize of output 45 [2023-12-24 19:36:49,602 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 0 case distinctions, treesize of input 52 treesize of output 45 [2023-12-24 19:36:52,194 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 0 case distinctions, treesize of input 49 treesize of output 53 [2023-12-24 19:36:55,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2023-12-24 19:36:58,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 70 [2023-12-24 19:37:52,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 89 [2023-12-24 19:38:02,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 83 [2023-12-24 19:38:31,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 93 [2023-12-24 19:38:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 359 proven. 185 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-24 19:38:31,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 19:39:22,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1794148982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 19:39:22,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 19:39:22,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 59 [2023-12-24 19:39:22,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124045063] [2023-12-24 19:39:22,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 19:39:22,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-12-24 19:39:22,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 19:39:22,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-12-24 19:39:22,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=4590, Unknown=43, NotChecked=0, Total=5112 [2023-12-24 19:39:22,495 INFO L87 Difference]: Start difference. First operand 427 states and 576 transitions. Second operand has 60 states, 52 states have (on average 2.9423076923076925) internal successors, (153), 55 states have internal predecessors, (153), 17 states have call successors, (36), 13 states have call predecessors, (36), 17 states have return successors, (36), 13 states have call predecessors, (36), 17 states have call successors, (36) Received shutdown request... [2023-12-24 19:39:46,950 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 19:39:46,950 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 19:39:46,950 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 19:39:47,976 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 (19)] Forceful destruction successful, exit code 0 [2023-12-24 19:39:47,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-12-24 19:39:48,161 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-24 19:39:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-24 19:39:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 281 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 296.8s TimeCoverageRelationStatistics Valid=857, Invalid=6756, Unknown=43, NotChecked=0, Total=7656 [2023-12-24 19:39:48,201 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 141 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-24 19:39:48,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 581 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-24 19:39:48,202 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 19:39:48,202 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (427states) and FLOYD_HOARE automaton (currently 33 states, 60 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-24 19:39:48,205 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 19:39:48,207 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 19:39:48,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 07:39:48 BoogieIcfgContainer [2023-12-24 19:39:48,208 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 19:39:48,208 INFO L158 Benchmark]: Toolchain (without parser) took 875544.28ms. Allocated memory was 169.9MB in the beginning and 327.2MB in the end (delta: 157.3MB). Free memory was 136.4MB in the beginning and 169.8MB in the end (delta: -33.4MB). Peak memory consumption was 125.8MB. Max. memory is 8.0GB. [2023-12-24 19:39:48,209 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 169.9MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 19:39:48,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.15ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 119.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-24 19:39:48,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.90ms. Allocated memory is still 169.9MB. Free memory was 119.0MB in the beginning and 115.4MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-24 19:39:48,209 INFO L158 Benchmark]: Boogie Preprocessor took 126.78ms. Allocated memory is still 169.9MB. Free memory was 115.4MB in the beginning and 110.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-24 19:39:48,209 INFO L158 Benchmark]: RCFGBuilder took 870.25ms. Allocated memory is still 169.9MB. Free memory was 110.6MB in the beginning and 69.1MB in the end (delta: 41.5MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-24 19:39:48,209 INFO L158 Benchmark]: TraceAbstraction took 874146.98ms. Allocated memory was 169.9MB in the beginning and 327.2MB in the end (delta: 157.3MB). Free memory was 143.5MB in the beginning and 169.8MB in the end (delta: -26.3MB). Peak memory consumption was 130.5MB. Max. memory is 8.0GB. [2023-12-24 19:39:48,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2023-12-24 19:39:48,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 169.9MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 298.15ms. Allocated memory is still 169.9MB. Free memory was 136.4MB in the beginning and 119.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 61.90ms. Allocated memory is still 169.9MB. Free memory was 119.0MB in the beginning and 115.4MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 126.78ms. Allocated memory is still 169.9MB. Free memory was 115.4MB in the beginning and 110.6MB in the end (delta: 4.8MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 870.25ms. Allocated memory is still 169.9MB. Free memory was 110.6MB in the beginning and 69.1MB in the end (delta: 41.5MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 874146.98ms. Allocated memory was 169.9MB in the beginning and 327.2MB in the end (delta: 157.3MB). Free memory was 143.5MB in the beginning and 169.8MB in the end (delta: -26.3MB). Peak memory consumption was 130.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was constructing difference of abstraction (427states) and FLOYD_HOARE automaton (currently 33 states, 60 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 874.1s, OverallIterations: 12, TraceHistogramMax: 18, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 134.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 6956 SdHoareTripleChecker+Valid, 78.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6952 mSDsluCounter, 8270 SdHoareTripleChecker+Invalid, 73.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6782 mSDsCounter, 1535 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15433 IncrementalHoareTripleChecker+Invalid, 16972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1535 mSolverCounterUnsat, 1488 mSDtfsCounter, 15433 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3509 GetRequests, 3029 SyntacticMatches, 6 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7623 ImplicationChecksByTransitivity, 625.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=603occurred in iteration=9, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 697 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 16.9s SatisfiabilityAnalysisTime, 715.9s InterpolantComputationTime, 2726 NumberOfCodeBlocks, 2726 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 2987 ConstructedInterpolants, 655 QuantifiedInterpolants, 90722 SizeOfPredicates, 361 NumberOfNonLiveVariables, 5917 ConjunctsInSsa, 669 ConjunctsInUnsatCore, 21 InterpolantComputations, 7 PerfectInterpolantSequences, 11090/12852 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown