/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/array-examples/standard_init7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 03:39:15,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 03:39:15,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 03:39:15,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 03:39:15,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 03:39:15,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 03:39:15,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 03:39:15,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 03:39:15,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 03:39:15,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 03:39:15,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 03:39:15,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 03:39:15,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 03:39:15,511 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 03:39:15,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 03:39:15,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 03:39:15,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 03:39:15,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 03:39:15,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 03:39:15,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 03:39:15,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 03:39:15,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 03:39:15,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 03:39:15,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 03:39:15,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 03:39:15,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 03:39:15,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 03:39:15,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 03:39:15,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 03:39:15,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 03:39:15,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 03:39:15,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 03:39:15,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 03:39:15,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 03:39:15,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 03:39:15,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 03:39:15,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 03:39:15,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 03:39:15,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 03:39:15,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 03:39:15,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 03:39:15,563 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 03:39:15,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 03:39:15,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 03:39:15,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 03:39:15,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 03:39:15,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 03:39:15,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 03:39:15,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 03:39:15,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 03:39:15,589 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 03:39:15,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 03:39:15,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 03:39:15,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 03:39:15,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:39:15,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 03:39:15,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 03:39:15,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 03:39:15,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 03:39:15,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 03:39:15,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 03:39:15,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 03:39:15,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 03:39:15,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 03:39:15,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 03:39:15,819 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 03:39:15,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2022-01-10 03:39:15,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b606800/30fad588ca90404495db461e6190c94c/FLAGb0f800bef [2022-01-10 03:39:16,183 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 03:39:16,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2022-01-10 03:39:16,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b606800/30fad588ca90404495db461e6190c94c/FLAGb0f800bef [2022-01-10 03:39:16,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5b606800/30fad588ca90404495db461e6190c94c [2022-01-10 03:39:16,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 03:39:16,621 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 03:39:16,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 03:39:16,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 03:39:16,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 03:39:16,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3532bd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16, skipping insertion in model container [2022-01-10 03:39:16,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 03:39:16,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 03:39:16,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i[816,829] [2022-01-10 03:39:16,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:39:16,780 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 03:39:16,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i[816,829] [2022-01-10 03:39:16,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 03:39:16,810 INFO L208 MainTranslator]: Completed translation [2022-01-10 03:39:16,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16 WrapperNode [2022-01-10 03:39:16,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 03:39:16,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 03:39:16,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 03:39:16,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 03:39:16,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,843 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2022-01-10 03:39:16,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 03:39:16,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 03:39:16,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 03:39:16,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 03:39:16,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 03:39:16,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 03:39:16,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 03:39:16,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 03:39:16,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (1/1) ... [2022-01-10 03:39:16,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 03:39:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 03:39:16,897 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 03:39:16,898 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 03:39:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 03:39:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 03:39:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 03:39:16,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 03:39:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 03:39:16,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 03:39:16,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 03:39:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 03:39:16,984 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 03:39:16,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 03:39:17,198 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 03:39:17,202 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 03:39:17,202 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 03:39:17,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:39:17 BoogieIcfgContainer [2022-01-10 03:39:17,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 03:39:17,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 03:39:17,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 03:39:17,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 03:39:17,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 03:39:16" (1/3) ... [2022-01-10 03:39:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456bdfce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:39:17, skipping insertion in model container [2022-01-10 03:39:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 03:39:16" (2/3) ... [2022-01-10 03:39:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456bdfce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 03:39:17, skipping insertion in model container [2022-01-10 03:39:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 03:39:17" (3/3) ... [2022-01-10 03:39:17,209 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2022-01-10 03:39:17,213 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 03:39:17,213 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 03:39:17,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 03:39:17,295 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 03:39:17,295 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 03:39:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 03:39:17,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:17,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:39:17,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:17,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:17,329 INFO L85 PathProgramCache]: Analyzing trace with hash -495328290, now seen corresponding path program 1 times [2022-01-10 03:39:17,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:17,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263422795] [2022-01-10 03:39:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:39:17,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:17,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:17,342 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 03:39:17,344 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 03:39:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:39:17,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 03:39:17,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:17,453 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 03:39:17,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:39:17,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:17,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263422795] [2022-01-10 03:39:17,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263422795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:39:17,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:39:17,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 03:39:17,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391581925] [2022-01-10 03:39:17,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:39:17,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 03:39:17,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:17,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 03:39:17,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 03:39:17,481 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:39:17,491 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2022-01-10 03:39:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 03:39:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 03:39:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:39:17,497 INFO L225 Difference]: With dead ends: 49 [2022-01-10 03:39:17,497 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 03:39:17,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 03:39:17,501 INFO L933 BasicCegarLoop]: 33 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, 33 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 03:39:17,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:39:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 03:39:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-10 03:39:17,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-01-10 03:39:17,520 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 19 [2022-01-10 03:39:17,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:39:17,521 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-01-10 03:39:17,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,521 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-01-10 03:39:17,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 03:39:17,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:17,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:39:17,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 03:39:17,722 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 03:39:17,723 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:17,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1855445030, now seen corresponding path program 1 times [2022-01-10 03:39:17,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:17,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155829205] [2022-01-10 03:39:17,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:39:17,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:17,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:17,725 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 03:39:17,727 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 03:39:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:39:17,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 03:39:17,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:17,815 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 03:39:17,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 03:39:17,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:17,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155829205] [2022-01-10 03:39:17,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155829205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 03:39:17,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 03:39:17,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 03:39:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490649717] [2022-01-10 03:39:17,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 03:39:17,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 03:39:17,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 03:39:17,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 03:39:17,818 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:39:17,871 INFO L93 Difference]: Finished difference Result 48 states and 68 transitions. [2022-01-10 03:39:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 03:39:17,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-10 03:39:17,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:39:17,872 INFO L225 Difference]: With dead ends: 48 [2022-01-10 03:39:17,873 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 03:39:17,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 03:39:17,874 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:39:17,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 03:39:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 03:39:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-10 03:39:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-01-10 03:39:17,878 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19 [2022-01-10 03:39:17,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:39:17,878 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-01-10 03:39:17,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:17,878 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-01-10 03:39:17,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 03:39:17,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:17,879 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 03:39:17,887 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 03:39:18,084 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 03:39:18,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:18,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1838625458, now seen corresponding path program 1 times [2022-01-10 03:39:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:18,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147268426] [2022-01-10 03:39:18,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 03:39:18,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:18,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:18,088 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 03:39:18,089 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 03:39:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 03:39:18,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 03:39:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 03:39:18,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:39:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 03:39:18,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:18,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147268426] [2022-01-10 03:39:18,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147268426] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:39:18,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:39:18,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 03:39:18,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141585502] [2022-01-10 03:39:18,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:39:18,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 03:39:18,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 03:39:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 03:39:18,268 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:39:18,487 INFO L93 Difference]: Finished difference Result 75 states and 109 transitions. [2022-01-10 03:39:18,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 03:39:18,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 03:39:18,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:39:18,491 INFO L225 Difference]: With dead ends: 75 [2022-01-10 03:39:18,491 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 03:39:18,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 03:39:18,492 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 03:39:18,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 03:39:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 03:39:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-01-10 03:39:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-01-10 03:39:18,514 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 26 [2022-01-10 03:39:18,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:39:18,515 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-01-10 03:39:18,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:18,515 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-01-10 03:39:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 03:39:18,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:18,516 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:39:18,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 03:39:18,726 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 03:39:18,726 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1915847130, now seen corresponding path program 2 times [2022-01-10 03:39:18,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:18,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968449999] [2022-01-10 03:39:18,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 03:39:18,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:18,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:18,729 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 03:39:18,730 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 03:39:18,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 03:39:18,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:39:18,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 03:39:18,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 03:39:18,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:39:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 03:39:19,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:19,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968449999] [2022-01-10 03:39:19,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968449999] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:39:19,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:39:19,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-01-10 03:39:19,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568425259] [2022-01-10 03:39:19,094 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:39:19,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 03:39:19,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 03:39:19,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-01-10 03:39:19,095 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:39:19,745 INFO L93 Difference]: Finished difference Result 135 states and 190 transitions. [2022-01-10 03:39:19,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 03:39:19,746 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-01-10 03:39:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:39:19,747 INFO L225 Difference]: With dead ends: 135 [2022-01-10 03:39:19,747 INFO L226 Difference]: Without dead ends: 92 [2022-01-10 03:39:19,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-01-10 03:39:19,748 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 03:39:19,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 03:39:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-01-10 03:39:19,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-01-10 03:39:19,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2022-01-10 03:39:19,764 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 47 [2022-01-10 03:39:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:39:19,764 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2022-01-10 03:39:19,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2022-01-10 03:39:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 03:39:19,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:19,766 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:39:19,776 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 03:39:19,974 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 03:39:19,975 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1268791078, now seen corresponding path program 3 times [2022-01-10 03:39:19,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080719681] [2022-01-10 03:39:19,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 03:39:19,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:19,977 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 03:39:19,979 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 03:39:20,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-10 03:39:20,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:39:20,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 03:39:20,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-01-10 03:39:20,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:39:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-01-10 03:39:21,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:21,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080719681] [2022-01-10 03:39:21,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080719681] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:39:21,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:39:21,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-01-10 03:39:21,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517476737] [2022-01-10 03:39:21,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:39:21,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 03:39:21,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:21,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 03:39:21,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-01-10 03:39:21,233 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:39:23,942 INFO L93 Difference]: Finished difference Result 255 states and 352 transitions. [2022-01-10 03:39:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-10 03:39:23,942 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 03:39:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:39:23,944 INFO L225 Difference]: With dead ends: 255 [2022-01-10 03:39:23,944 INFO L226 Difference]: Without dead ends: 176 [2022-01-10 03:39:23,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 03:39:23,945 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 1095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1095 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 03:39:23,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1095 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 03:39:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-10 03:39:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-01-10 03:39:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0457142857142858) internal successors, (183), 175 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:23,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2022-01-10 03:39:23,968 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 89 [2022-01-10 03:39:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:39:23,968 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 183 transitions. [2022-01-10 03:39:23,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 24 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 183 transitions. [2022-01-10 03:39:23,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-10 03:39:23,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:23,971 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:39:23,990 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 03:39:24,191 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 03:39:24,191 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:24,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:24,193 INFO L85 PathProgramCache]: Analyzing trace with hash 126801626, now seen corresponding path program 4 times [2022-01-10 03:39:24,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:24,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100313528] [2022-01-10 03:39:24,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-10 03:39:24,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:24,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:24,200 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 03:39:24,202 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 03:39:24,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-10 03:39:24,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:39:24,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-10 03:39:24,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-01-10 03:39:24,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:39:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2022-01-10 03:39:26,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:26,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100313528] [2022-01-10 03:39:26,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100313528] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:39:26,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:39:26,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-01-10 03:39:26,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833689866] [2022-01-10 03:39:26,331 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:39:26,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-10 03:39:26,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-10 03:39:26,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1634, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 03:39:26,333 INFO L87 Difference]: Start difference. First operand 176 states and 183 transitions. Second operand has 48 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 03:39:38,297 INFO L93 Difference]: Finished difference Result 495 states and 676 transitions. [2022-01-10 03:39:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-10 03:39:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-01-10 03:39:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 03:39:38,299 INFO L225 Difference]: With dead ends: 495 [2022-01-10 03:39:38,300 INFO L226 Difference]: Without dead ends: 344 [2022-01-10 03:39:38,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1678, Invalid=3152, Unknown=0, NotChecked=0, Total=4830 [2022-01-10 03:39:38,302 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 3729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 7922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3729 IncrementalHoareTripleChecker+Valid, 4193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-01-10 03:39:38,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 7922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3729 Valid, 4193 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-01-10 03:39:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-01-10 03:39:38,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-01-10 03:39:38,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.0233236151603498) internal successors, (351), 343 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 351 transitions. [2022-01-10 03:39:38,324 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 351 transitions. Word has length 173 [2022-01-10 03:39:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 03:39:38,325 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 351 transitions. [2022-01-10 03:39:38,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 48 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 03:39:38,325 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 351 transitions. [2022-01-10 03:39:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2022-01-10 03:39:38,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 03:39:38,329 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 03:39:38,344 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 03:39:38,541 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 03:39:38,542 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 03:39:38,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 03:39:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash -866716966, now seen corresponding path program 5 times [2022-01-10 03:39:38,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 03:39:38,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105597679] [2022-01-10 03:39:38,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-10 03:39:38,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 03:39:38,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 03:39:38,545 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 03:39:38,547 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 03:39:48,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2022-01-10 03:39:48,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 03:39:48,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-10 03:39:48,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 03:39:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2022-01-10 03:39:49,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 03:39:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2022-01-10 03:39:55,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 03:39:55,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105597679] [2022-01-10 03:39:55,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105597679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 03:39:55,492 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 03:39:55,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2022-01-10 03:39:55,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740616405] [2022-01-10 03:39:55,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 03:39:55,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-01-10 03:39:55,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 03:39:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-01-10 03:39:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6722, Unknown=0, NotChecked=0, Total=9120 [2022-01-10 03:39:55,495 INFO L87 Difference]: Start difference. First operand 344 states and 351 transitions. Second operand has 96 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 96 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)