/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:00:37,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:00:37,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:00:37,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:00:37,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:00:37,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:00:37,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:00:37,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:00:37,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:00:37,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:00:37,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:00:37,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:00:37,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:00:37,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:00:37,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:00:37,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:00:37,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:00:37,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:00:37,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:00:37,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:00:37,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:00:37,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:00:37,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:00:37,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:00:37,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:00:37,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:00:37,812 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:00:37,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:00:37,813 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:00:37,813 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:00:37,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:00:37,814 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:00:37,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:00:37,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:00:37,815 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:00:37,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:00:37,816 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:00:37,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:00:37,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:00:37,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:00:37,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:00:37,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:00:37,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:00:37,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:00:37,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:00:37,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:00:37,819 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:00:38,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:00:38,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:00:38,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:00:38,064 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:00:38,065 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:00:38,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i [2022-01-10 06:00:38,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2220717e8/8b6857bb6e18430e9368360ecd048a7e/FLAG71e3e0839 [2022-01-10 06:00:38,585 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:00:38,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i [2022-01-10 06:00:38,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2220717e8/8b6857bb6e18430e9368360ecd048a7e/FLAG71e3e0839 [2022-01-10 06:00:38,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2220717e8/8b6857bb6e18430e9368360ecd048a7e [2022-01-10 06:00:38,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:00:38,629 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:00:38,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:00:38,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:00:38,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:00:38,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:00:38" (1/1) ... [2022-01-10 06:00:38,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0d79d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:38, skipping insertion in model container [2022-01-10 06:00:38,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:00:38" (1/1) ... [2022-01-10 06:00:38,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:00:38,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:00:38,978 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-01-10 06:00:39,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:00:39,029 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:00:39,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:00:39,073 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-01-10 06:00:39,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:00:39,093 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:00:39,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2022-01-10 06:00:39,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:00:39,182 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:00:39,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39 WrapperNode [2022-01-10 06:00:39,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:00:39,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:00:39,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:00:39,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:00:39,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,246 INFO L137 Inliner]: procedures = 235, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 113 [2022-01-10 06:00:39,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:00:39,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:00:39,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:00:39,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:00:39,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:00:39,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:00:39,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:00:39,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:00:39,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (1/1) ... [2022-01-10 06:00:39,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:00:39,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:00:39,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:00:39,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:00:39,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 06:00:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 06:00:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-01-10 06:00:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-01-10 06:00:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 06:00:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-01-10 06:00:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-01-10 06:00:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-01-10 06:00:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-01-10 06:00:39,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:00:39,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:00:39,513 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:00:39,515 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:00:40,093 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:00:40,099 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:00:40,099 INFO L299 CfgBuilder]: Removed 41 assume(true) statements. [2022-01-10 06:00:40,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:00:40 BoogieIcfgContainer [2022-01-10 06:00:40,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:00:40,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:00:40,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:00:40,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:00:40,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:00:38" (1/3) ... [2022-01-10 06:00:40,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182ac819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:00:40, skipping insertion in model container [2022-01-10 06:00:40,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:00:39" (2/3) ... [2022-01-10 06:00:40,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182ac819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:00:40, skipping insertion in model container [2022-01-10 06:00:40,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:00:40" (3/3) ... [2022-01-10 06:00:40,107 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2022-01-10 06:00:40,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:00:40,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:00:40,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:00:40,154 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:00:40,155 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:00:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 88 states have (on average 1.75) internal successors, (154), 107 states have internal predecessors, (154), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-10 06:00:40,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 06:00:40,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:00:40,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:00:40,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:00:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:00:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash 844459879, now seen corresponding path program 1 times [2022-01-10 06:00:40,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:00:40,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517105335] [2022-01-10 06:00:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:00:40,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:00:40,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:00:40,187 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:00:40,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:00:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:00:40,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:00:40,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:00:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:00:40,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:00:40,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:00:40,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517105335] [2022-01-10 06:00:40,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517105335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:00:40,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:00:40,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:00:40,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658339136] [2022-01-10 06:00:40,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:00:40,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:00:40,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:00:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:00:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:00:40,350 INFO L87 Difference]: Start difference. First operand has 117 states, 88 states have (on average 1.75) internal successors, (154), 107 states have internal predecessors, (154), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:00:40,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:00:40,378 INFO L93 Difference]: Finished difference Result 228 states and 395 transitions. [2022-01-10 06:00:40,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:00:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-10 06:00:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:00:40,386 INFO L225 Difference]: With dead ends: 228 [2022-01-10 06:00:40,386 INFO L226 Difference]: Without dead ends: 106 [2022-01-10 06:00:40,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:00:40,392 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:00:40,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:00:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-10 06:00:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-01-10 06:00:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 96 states have internal predecessors, (101), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:00:40,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-01-10 06:00:40,441 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 9 [2022-01-10 06:00:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:00:40,441 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-01-10 06:00:40,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:00:40,442 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-01-10 06:00:40,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 06:00:40,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:00:40,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:00:40,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:00:40,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:00:40,652 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:00:40,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:00:40,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1622181416, now seen corresponding path program 1 times [2022-01-10 06:00:40,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:00:40,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247523650] [2022-01-10 06:00:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:00:40,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:00:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:00:40,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:00:40,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:00:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:00:40,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:00:40,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:00:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:00:40,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:00:40,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:00:40,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247523650] [2022-01-10 06:00:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247523650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:00:40,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:00:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:00:40,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765869860] [2022-01-10 06:00:40,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:00:40,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:00:40,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:00:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:00:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:00:40,966 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:00:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:00:41,157 INFO L93 Difference]: Finished difference Result 108 states and 128 transitions. [2022-01-10 06:00:41,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:00:41,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-01-10 06:00:41,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:00:41,160 INFO L225 Difference]: With dead ends: 108 [2022-01-10 06:00:41,160 INFO L226 Difference]: Without dead ends: 105 [2022-01-10 06:00:41,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:00:41,161 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 169 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:00:41,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 253 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:00:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-01-10 06:00:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-01-10 06:00:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 95 states have internal predecessors, (100), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-10 06:00:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2022-01-10 06:00:41,183 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 20 [2022-01-10 06:00:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:00:41,184 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2022-01-10 06:00:41,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:00:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2022-01-10 06:00:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-10 06:00:41,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:00:41,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:00:41,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:00:41,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:00:41,404 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:00:41,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:00:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -845475890, now seen corresponding path program 1 times [2022-01-10 06:00:41,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:00:41,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196634750] [2022-01-10 06:00:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:00:41,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:00:41,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:00:41,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:00:41,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:00:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:00:41,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-10 06:00:41,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:00:41,736 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:00:41,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 12 [2022-01-10 06:00:42,052 INFO L353 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-01-10 06:00:42,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 130 [2022-01-10 06:00:42,088 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 [2022-01-10 06:00:42,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 [2022-01-10 06:00:42,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 [2022-01-10 06:00:42,818 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 06:00:42,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 16 [2022-01-10 06:00:42,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-01-10 06:00:42,972 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 06:00:42,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 06:00:43,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-01-10 06:00:43,301 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:00:43,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 31 [2022-01-10 06:00:43,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-01-10 06:00:43,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-01-10 06:00:43,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 06:00:43,721 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-10 06:00:43,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 26 [2022-01-10 06:00:43,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-10 06:00:43,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-10 06:00:43,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-01-10 06:00:43,833 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:00:43,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2022-01-10 06:00:43,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 06:00:43,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 11 [2022-01-10 06:00:43,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:00:43,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:00:43,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:00:43,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196634750] [2022-01-10 06:00:43,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196634750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:00:43,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:00:43,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 06:00:43,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355534134] [2022-01-10 06:00:43,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:00:43,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:00:43,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:00:43,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:00:43,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-01-10 06:00:43,959 INFO L87 Difference]: Start difference. First operand 105 states and 125 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:00:45,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:00:45,796 INFO L93 Difference]: Finished difference Result 197 states and 234 transitions. [2022-01-10 06:00:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 06:00:45,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-01-10 06:00:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:00:45,802 INFO L225 Difference]: With dead ends: 197 [2022-01-10 06:00:45,802 INFO L226 Difference]: Without dead ends: 191 [2022-01-10 06:00:45,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-01-10 06:00:45,803 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 378 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:00:45,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 548 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 06:00:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-01-10 06:00:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 171. [2022-01-10 06:00:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 143 states have (on average 1.2447552447552448) internal successors, (178), 157 states have internal predecessors, (178), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-01-10 06:00:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 208 transitions. [2022-01-10 06:00:45,816 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 208 transitions. Word has length 23 [2022-01-10 06:00:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:00:45,816 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 208 transitions. [2022-01-10 06:00:45,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:00:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 208 transitions. [2022-01-10 06:00:45,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 06:00:45,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:00:45,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:00:45,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 06:00:46,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:00:46,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:00:46,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:00:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2145302357, now seen corresponding path program 1 times [2022-01-10 06:00:46,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:00:46,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684728011] [2022-01-10 06:00:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:00:46,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:00:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:00:46,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:00:46,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:00:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:00:46,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-10 06:00:46,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:00:46,332 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:00:46,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 12 [2022-01-10 06:00:46,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:00:46,383 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:00:46,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:00:46,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:00:46,672 INFO L353 Elim1Store]: treesize reduction 77, result has 3.8 percent of original size [2022-01-10 06:00:46,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 54 treesize of output 46 [2022-01-10 06:00:46,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:00:46,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2022-01-10 06:00:46,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 17 [2022-01-10 06:00:46,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:00:46,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 20 [2022-01-10 06:00:46,780 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:00:46,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-01-10 06:00:46,980 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-01-10 06:00:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:00:47,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:00:47,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:00:47,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684728011] [2022-01-10 06:00:47,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684728011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:00:47,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:00:47,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 06:00:47,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864573621] [2022-01-10 06:00:47,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:00:47,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:00:47,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:00:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:00:47,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=85, Unknown=5, NotChecked=0, Total=110 [2022-01-10 06:00:47,012 INFO L87 Difference]: Start difference. First operand 171 states and 208 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:00:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:00:48,854 INFO L93 Difference]: Finished difference Result 275 states and 329 transitions. [2022-01-10 06:00:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:00:48,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-01-10 06:00:48,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:00:48,855 INFO L225 Difference]: With dead ends: 275 [2022-01-10 06:00:48,855 INFO L226 Difference]: Without dead ends: 272 [2022-01-10 06:00:48,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=205, Unknown=11, NotChecked=0, Total=272 [2022-01-10 06:00:48,856 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 231 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:00:48,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 448 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 681 Invalid, 0 Unknown, 125 Unchecked, 1.5s Time] [2022-01-10 06:00:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-01-10 06:00:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 255. [2022-01-10 06:00:48,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 219 states have (on average 1.2374429223744292) internal successors, (271), 234 states have internal predecessors, (271), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-10 06:00:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 310 transitions. [2022-01-10 06:00:48,881 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 310 transitions. Word has length 26 [2022-01-10 06:00:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:00:48,881 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 310 transitions. [2022-01-10 06:00:48,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:00:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 310 transitions. [2022-01-10 06:00:48,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 06:00:48,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:00:48,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:00:48,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:00:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:00:49,082 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:00:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:00:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1337820254, now seen corresponding path program 1 times [2022-01-10 06:00:49,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:00:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813803183] [2022-01-10 06:00:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:00:49,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:00:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:00:49,084 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:00:49,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:00:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:00:49,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-10 06:00:49,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:00:49,356 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:00:49,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 12 [2022-01-10 06:00:49,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:00:49,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:00:49,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:00:49,440 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:00:57,814 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 137 treesize of output 101 [2022-01-10 06:00:57,830 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-01-10 06:00:57,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 37 [2022-01-10 06:00:59,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-01-10 06:00:59,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 22 treesize of output 16 [2022-01-10 06:01:02,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-10 06:01:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:01:02,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:01:02,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:01:02,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813803183] [2022-01-10 06:01:02,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813803183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:01:02,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:01:02,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 06:01:02,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931634252] [2022-01-10 06:01:02,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:01:02,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 06:01:02,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:01:02,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 06:01:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=85, Unknown=5, NotChecked=0, Total=110 [2022-01-10 06:01:02,204 INFO L87 Difference]: Start difference. First operand 255 states and 310 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:01:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:01:17,010 INFO L93 Difference]: Finished difference Result 274 states and 327 transitions. [2022-01-10 06:01:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 06:01:17,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-01-10 06:01:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:01:17,012 INFO L225 Difference]: With dead ends: 274 [2022-01-10 06:01:17,012 INFO L226 Difference]: Without dead ends: 271 [2022-01-10 06:01:17,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=54, Invalid=207, Unknown=11, NotChecked=0, Total=272 [2022-01-10 06:01:17,013 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 256 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:01:17,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 523 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 669 Invalid, 0 Unknown, 212 Unchecked, 2.5s Time] [2022-01-10 06:01:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-01-10 06:01:17,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 255. [2022-01-10 06:01:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 219 states have (on average 1.2328767123287672) internal successors, (270), 234 states have internal predecessors, (270), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-10 06:01:17,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 309 transitions. [2022-01-10 06:01:17,029 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 309 transitions. Word has length 29 [2022-01-10 06:01:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:01:17,030 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 309 transitions. [2022-01-10 06:01:17,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:01:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 309 transitions. [2022-01-10 06:01:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 06:01:17,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:01:17,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:01:17,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:01:17,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:01:17,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:01:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:01:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1765703232, now seen corresponding path program 1 times [2022-01-10 06:01:17,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:01:17,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729733546] [2022-01-10 06:01:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:01:17,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:01:17,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:01:17,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:01:17,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:01:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:01:17,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-10 06:01:17,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:01:17,613 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:01:17,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 12 [2022-01-10 06:01:17,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:01:17,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:01:17,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:01:17,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:01:20,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:20,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 157 [2022-01-10 06:01:20,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:20,984 INFO L353 Elim1Store]: treesize reduction 44, result has 6.4 percent of original size [2022-01-10 06:01:20,984 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 184 treesize of output 167 [2022-01-10 06:01:20,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:20,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 140 [2022-01-10 06:01:21,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:21,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:21,022 INFO L353 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-01-10 06:01:21,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 52 [2022-01-10 06:01:21,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 22 [2022-01-10 06:01:21,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 52 [2022-01-10 06:01:22,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 22 [2022-01-10 06:01:22,820 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-10 06:01:22,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 19 [2022-01-10 06:01:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:01:22,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:01:22,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:01:22,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729733546] [2022-01-10 06:01:22,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729733546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:01:22,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:01:22,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:01:22,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768061299] [2022-01-10 06:01:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:01:22,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:01:22,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:01:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:01:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=105, Unknown=5, NotChecked=0, Total=132 [2022-01-10 06:01:22,902 INFO L87 Difference]: Start difference. First operand 255 states and 309 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:01:28,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:01:28,612 INFO L93 Difference]: Finished difference Result 273 states and 325 transitions. [2022-01-10 06:01:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:01:28,613 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-01-10 06:01:28,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:01:28,614 INFO L225 Difference]: With dead ends: 273 [2022-01-10 06:01:28,614 INFO L226 Difference]: Without dead ends: 270 [2022-01-10 06:01:28,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=66, Invalid=264, Unknown=12, NotChecked=0, Total=342 [2022-01-10 06:01:28,615 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 246 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:01:28,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 557 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 761 Invalid, 0 Unknown, 146 Unchecked, 3.6s Time] [2022-01-10 06:01:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-10 06:01:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 255. [2022-01-10 06:01:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 219 states have (on average 1.2283105022831051) internal successors, (269), 234 states have internal predecessors, (269), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-10 06:01:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 308 transitions. [2022-01-10 06:01:28,631 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 308 transitions. Word has length 32 [2022-01-10 06:01:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:01:28,631 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 308 transitions. [2022-01-10 06:01:28,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:01:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 308 transitions. [2022-01-10 06:01:28,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 06:01:28,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:01:28,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:01:28,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:01:28,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:01:28,840 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:01:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:01:28,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1378941963, now seen corresponding path program 1 times [2022-01-10 06:01:28,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:01:28,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942808000] [2022-01-10 06:01:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:01:28,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:01:28,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:01:28,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:01:28,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:01:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:01:29,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-10 06:01:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:01:29,221 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:01:29,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 12 [2022-01-10 06:01:29,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:01:29,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:01:29,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:01:29,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:01:32,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:32,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 157 [2022-01-10 06:01:32,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:32,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 35 treesize of output 30 [2022-01-10 06:01:32,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:32,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:32,511 INFO L353 Elim1Store]: treesize reduction 17, result has 34.6 percent of original size [2022-01-10 06:01:32,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 50 [2022-01-10 06:01:32,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:32,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-10 06:01:32,703 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-10 06:01:32,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 67 [2022-01-10 06:01:32,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 58 [2022-01-10 06:01:33,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 22 [2022-01-10 06:01:33,668 INFO L353 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-01-10 06:01:33,668 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 19 [2022-01-10 06:01:33,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:01:33,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:01:33,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:01:33,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942808000] [2022-01-10 06:01:33,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942808000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:01:33,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:01:33,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 06:01:33,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219353950] [2022-01-10 06:01:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:01:33,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:01:33,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:01:33,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:01:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=105, Unknown=5, NotChecked=0, Total=132 [2022-01-10 06:01:33,757 INFO L87 Difference]: Start difference. First operand 255 states and 308 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:01:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:01:38,642 INFO L93 Difference]: Finished difference Result 272 states and 323 transitions. [2022-01-10 06:01:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 06:01:38,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-01-10 06:01:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:01:38,644 INFO L225 Difference]: With dead ends: 272 [2022-01-10 06:01:38,644 INFO L226 Difference]: Without dead ends: 269 [2022-01-10 06:01:38,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=66, Invalid=264, Unknown=12, NotChecked=0, Total=342 [2022-01-10 06:01:38,645 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 06:01:38,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 553 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 750 Invalid, 0 Unknown, 127 Unchecked, 2.9s Time] [2022-01-10 06:01:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-01-10 06:01:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 255. [2022-01-10 06:01:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 219 states have (on average 1.2237442922374429) internal successors, (268), 234 states have internal predecessors, (268), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-01-10 06:01:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 307 transitions. [2022-01-10 06:01:38,660 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 307 transitions. Word has length 35 [2022-01-10 06:01:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:01:38,661 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 307 transitions. [2022-01-10 06:01:38,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-10 06:01:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 307 transitions. [2022-01-10 06:01:38,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 06:01:38,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:01:38,662 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:01:38,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:01:38,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:01:38,868 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:01:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:01:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1206750989, now seen corresponding path program 1 times [2022-01-10 06:01:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:01:38,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331794494] [2022-01-10 06:01:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:01:38,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:01:38,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:01:38,870 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:01:38,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:01:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:01:39,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-10 06:01:39,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:01:39,494 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-01-10 06:01:39,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 25 [2022-01-10 06:01:39,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:01:39,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-01-10 06:01:39,632 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:01:39,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-01-10 06:01:48,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:48,170 INFO L353 Elim1Store]: treesize reduction 122, result has 14.7 percent of original size [2022-01-10 06:01:48,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 43 [2022-01-10 06:01:48,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-01-10 06:01:50,334 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-01-10 06:01:50,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 43 [2022-01-10 06:01:50,342 INFO L353 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-01-10 06:01:50,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 7 [2022-01-10 06:01:52,490 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-10 06:01:52,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 17 [2022-01-10 06:01:52,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 26 [2022-01-10 06:01:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-10 06:01:52,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 22 treesize of output 8