/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:12:11,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:12:11,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:12:11,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 20:12:11,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 20:12:11,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 20:12:11,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 20:12:11,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 20:12:11,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 20:12:11,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 20:12:11,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 20:12:11,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 20:12:11,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:12:11,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:12:11,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:12:11,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:12:11,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:12:11,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:12:11,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:12:11,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:12:11,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:12:11,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:12:11,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:12:11,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:12:11,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:12:11,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:12:11,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:12:11,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:12:11,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:12:11,783 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:12:11,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:12:11,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:12:11,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:12:11,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:12:11,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:12:11,785 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:12:11,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:12:11,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:12:11,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:12:11,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:12:11,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:12:11,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:12:11,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:12:11,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:12:11,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:12:11,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:12:11,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:12:11,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:12:11,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:12:11,792 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:12:11,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:12:11,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:12:11,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:12:11,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:12:11,793 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:12:11,793 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:12:11,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:12:11,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:12:11,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:12:11,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:12:11,985 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:12:11,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c [2022-01-10 20:12:12,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7349e12b8/506abcb76cca462bbf26ed68536ab086/FLAGd4d73c679 [2022-01-10 20:12:12,390 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:12:12,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-2.c [2022-01-10 20:12:12,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7349e12b8/506abcb76cca462bbf26ed68536ab086/FLAGd4d73c679 [2022-01-10 20:12:12,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7349e12b8/506abcb76cca462bbf26ed68536ab086 [2022-01-10 20:12:12,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:12:12,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:12:12,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:12:12,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:12:12,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:12:12,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:12:12" (1/1) ... [2022-01-10 20:12:12,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ff4ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:12, skipping insertion in model container [2022-01-10 20:12:12,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:12:12" (1/1) ... [2022-01-10 20:12:12,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:12:12,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:12:13,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-2.c[321,334] [2022-01-10 20:12:13,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:12:13,021 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:12:13,028 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_1-2.c[321,334] [2022-01-10 20:12:13,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:12:13,041 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:12:13,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13 WrapperNode [2022-01-10 20:12:13,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:12:13,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:12:13,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:12:13,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:12:13,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,084 INFO L137 Inliner]: procedures = 15, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-01-10 20:12:13,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:12:13,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:12:13,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:12:13,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:12:13,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:12:13,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:12:13,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:12:13,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:12:13,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:12:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:13,134 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 20:12:13,165 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 20:12:13,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:12:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:12:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 20:12:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 20:12:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:12:13,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:12:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 20:12:13,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 20:12:13,227 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:12:13,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:12:13,289 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:12:13,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:12:13,293 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 20:12:13,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:13 BoogieIcfgContainer [2022-01-10 20:12:13,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:12:13,295 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:12:13,295 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:12:13,296 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:12:13,298 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:13" (1/1) ... [2022-01-10 20:12:13,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:12:13 BasicIcfg [2022-01-10 20:12:13,336 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:12:13,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:12:13,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:12:13,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:12:13,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:12:12" (1/4) ... [2022-01-10 20:12:13,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d88f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:13, skipping insertion in model container [2022-01-10 20:12:13,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:12:13" (2/4) ... [2022-01-10 20:12:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d88f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:12:13, skipping insertion in model container [2022-01-10 20:12:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:12:13" (3/4) ... [2022-01-10 20:12:13,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d88f9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:12:13, skipping insertion in model container [2022-01-10 20:12:13,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:12:13" (4/4) ... [2022-01-10 20:12:13,341 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.cTransformedIcfg [2022-01-10 20:12:13,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:12:13,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 20:12:13,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:12:13,405 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 20:12:13,406 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 20:12:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 20:12:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:12:13,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:13,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:12:13,432 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:13,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1805578951, now seen corresponding path program 1 times [2022-01-10 20:12:13,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:13,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216688235] [2022-01-10 20:12:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:13,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:13,542 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 20:12:13,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:13,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216688235] [2022-01-10 20:12:13,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216688235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:13,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:12:13,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:12:13,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795903155] [2022-01-10 20:12:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:13,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:12:13,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:12:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:12:13,569 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:12:13,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:13,577 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-01-10 20:12:13,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:12:13,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2022-01-10 20:12:13,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:13,583 INFO L225 Difference]: With dead ends: 20 [2022-01-10 20:12:13,583 INFO L226 Difference]: Without dead ends: 8 [2022-01-10 20:12:13,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 20:12:13,592 INFO L933 BasicCegarLoop]: 12 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, 12 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 20:12:13,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:13,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-01-10 20:12:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-01-10 20:12:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 20:12:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-01-10 20:12:13,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-01-10 20:12:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:13,613 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-01-10 20:12:13,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 20:12:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-01-10 20:12:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-10 20:12:13,613 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:13,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-10 20:12:13,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:12:13,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:13,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1805608742, now seen corresponding path program 1 times [2022-01-10 20:12:13,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:13,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553288099] [2022-01-10 20:12:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:13,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:13,713 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 20:12:13,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:13,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553288099] [2022-01-10 20:12:13,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553288099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:13,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:12:13,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:12:13,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195879292] [2022-01-10 20:12:13,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:13,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 20:12:13,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 20:12:13,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 20:12:13,716 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 20:12:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:13,750 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-01-10 20:12:13,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 20:12:13,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-01-10 20:12:13,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:13,751 INFO L225 Difference]: With dead ends: 14 [2022-01-10 20:12:13,751 INFO L226 Difference]: Without dead ends: 10 [2022-01-10 20:12:13,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:12:13,752 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:13,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-01-10 20:12:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-01-10 20:12:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 20:12:13,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-01-10 20:12:13,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2022-01-10 20:12:13,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:13,755 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-01-10 20:12:13,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 20:12:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-01-10 20:12:13,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 20:12:13,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:13,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:13,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 20:12:13,756 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:13,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash 52644360, now seen corresponding path program 1 times [2022-01-10 20:12:13,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:13,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004281765] [2022-01-10 20:12:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:13,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:13,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:13,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004281765] [2022-01-10 20:12:13,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004281765] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:12:13,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727302761] [2022-01-10 20:12:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:13,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:13,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:12:13,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:12:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:13,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 20:12:13,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:12:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:14,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:12:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:14,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727302761] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:12:14,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:12:14,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 20:12:14,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347431700] [2022-01-10 20:12:14,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:12:14,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:12:14,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:14,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:12:14,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:12:14,156 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 20:12:14,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:14,225 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-01-10 20:12:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:12:14,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 8 [2022-01-10 20:12:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:14,226 INFO L225 Difference]: With dead ends: 19 [2022-01-10 20:12:14,226 INFO L226 Difference]: Without dead ends: 15 [2022-01-10 20:12:14,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 20:12:14,228 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:14,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:12:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-10 20:12:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-10 20:12:14,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 20:12:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-01-10 20:12:14,231 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-01-10 20:12:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:14,231 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-01-10 20:12:14,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 20:12:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-01-10 20:12:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 20:12:14,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:14,232 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:14,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 20:12:14,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:14,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:14,433 INFO L85 PathProgramCache]: Analyzing trace with hash 20991918, now seen corresponding path program 2 times [2022-01-10 20:12:14,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:14,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846459096] [2022-01-10 20:12:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:14,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:14,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:14,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:14,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846459096] [2022-01-10 20:12:14,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846459096] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:12:14,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776216550] [2022-01-10 20:12:14,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 20:12:14,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:14,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:14,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:12:14,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:12:14,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 20:12:14,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 20:12:14,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 20:12:14,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:12:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:23,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:12:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:25,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776216550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:12:25,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 20:12:25,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2022-01-10 20:12:25,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916810842] [2022-01-10 20:12:25,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 20:12:25,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 20:12:25,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 20:12:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=181, Unknown=2, NotChecked=0, Total=272 [2022-01-10 20:12:25,026 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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 20:12:33,807 WARN L228 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 39 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 20:12:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:42,627 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-01-10 20:12:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 20:12:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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 14 [2022-01-10 20:12:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:42,628 INFO L225 Difference]: With dead ends: 29 [2022-01-10 20:12:42,628 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 20:12:42,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=160, Invalid=300, Unknown=2, NotChecked=0, Total=462 [2022-01-10 20:12:42,629 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 20 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:42,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 24 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 52 Invalid, 0 Unknown, 15 Unchecked, 0.9s Time] [2022-01-10 20:12:42,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 20:12:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 20:12:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 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 20:12:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-01-10 20:12:42,635 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 14 [2022-01-10 20:12:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:42,635 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-01-10 20:12:42,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 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 20:12:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-01-10 20:12:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 20:12:42,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:12:42,636 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1] [2022-01-10 20:12:42,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:12:42,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 20:12:42,837 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:12:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:12:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 491392792, now seen corresponding path program 3 times [2022-01-10 20:12:42,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:12:42,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445108570] [2022-01-10 20:12:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:12:42,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:12:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:12:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:12:43,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:12:43,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445108570] [2022-01-10 20:12:43,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445108570] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 20:12:43,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542877642] [2022-01-10 20:12:43,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 20:12:43,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:43,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:12:43,022 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:12:43,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 20:12:43,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-10 20:12:43,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 20:12:43,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 20:12:43,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:12:43,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-01-10 20:12:43,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-10 20:12:43,786 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-10 20:12:43,786 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 77 treesize of output 35 [2022-01-10 20:12:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 20:12:43,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:12:43,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542877642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:12:43,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:12:43,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-01-10 20:12:43,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140157963] [2022-01-10 20:12:43,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:12:43,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 20:12:43,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:12:43,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 20:12:43,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-01-10 20:12:43,904 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 20:12:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:12:43,921 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2022-01-10 20:12:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 20:12:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 24 [2022-01-10 20:12:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:12:43,922 INFO L225 Difference]: With dead ends: 25 [2022-01-10 20:12:43,923 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 20:12:43,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-01-10 20:12:43,925 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:12:43,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-01-10 20:12:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 20:12:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 20:12:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 20:12:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 20:12:43,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-01-10 20:12:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:12:43,927 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 20:12:43,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 20:12:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 20:12:43,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 20:12:43,929 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 20:12:43,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 20:12:44,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:12:44,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 20:12:45,500 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 20:12:45,500 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L854 garLoopResultBuilder]: At program point L16-3(lines 16 18) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_ULTIMATE.start_main_~#A~0#1.offsetInt| 0))) (or (and .cse0 (<= |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 0) (not (<= (+ (div |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 2147483648) 1) 0))) (and .cse0 (< |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 4294967296) (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) (exists ((|aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_13_74| Int)) (let ((.cse2 (* |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_13_74| 4294967296))) (let ((.cse1 (+ .cse2 |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|))) (and (< .cse1 4294967297) (< (* (mod (+ 2147483647 |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 2147483648) 2) (+ 1023 .cse2 |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|)) (= .cse1 (+ (select (select |#memory_intInt| |ULTIMATE.start_ULTIMATE.start_main_~#A~0#1.baseInt|) (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~#A~0#1.offsetInt| (mod (+ (* (mod (div (+ (- 1) .cse2 |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int|) 2147483648) 2) 18446744056529682432) 18446744073709551612 (* 17179869184 |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_13_74|) (* |ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int| 4)) 18446744073709551616)) 18446744073709551616)) 1))))))))) [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L861 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 21) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 20:12:45,501 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 20:12:45,503 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-01-10 20:12:45,504 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 20:12:45,510 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_13_74| at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.bvinttranslation.IntToBvBackTranslation.convert(IntToBvBackTranslation.java:88) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation.IcfgTransformationObserver.lambda$0(IcfgTransformationObserver.java:355) at de.uni_freiburg.informatik.ultimate.icfgtransformer.IcfgTransformationBacktranslator.translateExpression(IcfgTransformationBacktranslator.java:113) at de.uni_freiburg.informatik.ultimate.icfgtransformer.IcfgTransformationBacktranslator.translateExpression(IcfgTransformationBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-10 20:12:45,519 INFO L158 Benchmark]: Toolchain (without parser) took 32680.01ms. Allocated memory was 182.5MB in the beginning and 275.8MB in the end (delta: 93.3MB). Free memory was 131.8MB in the beginning and 176.7MB in the end (delta: -44.9MB). Peak memory consumption was 49.0MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,520 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 20:12:45,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.23ms. Allocated memory is still 182.5MB. Free memory was 131.5MB in the beginning and 157.9MB in the end (delta: -26.4MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.30ms. Allocated memory is still 182.5MB. Free memory was 157.9MB in the beginning and 156.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,520 INFO L158 Benchmark]: Boogie Preprocessor took 25.67ms. Allocated memory is still 182.5MB. Free memory was 156.4MB in the beginning and 155.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,520 INFO L158 Benchmark]: RCFGBuilder took 183.30ms. Allocated memory is still 182.5MB. Free memory was 155.3MB in the beginning and 145.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,520 INFO L158 Benchmark]: IcfgTransformer took 41.15ms. Allocated memory is still 182.5MB. Free memory was 145.9MB in the beginning and 142.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,521 INFO L158 Benchmark]: TraceAbstraction took 32182.27ms. Allocated memory was 182.5MB in the beginning and 275.8MB in the end (delta: 93.3MB). Free memory was 142.2MB in the beginning and 176.7MB in the end (delta: -34.4MB). Peak memory consumption was 60.4MB. Max. memory is 8.0GB. [2022-01-10 20:12:45,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.23ms. Allocated memory is still 182.5MB. Free memory was 131.5MB in the beginning and 157.9MB in the end (delta: -26.4MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.30ms. Allocated memory is still 182.5MB. Free memory was 157.9MB in the beginning and 156.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.67ms. Allocated memory is still 182.5MB. Free memory was 156.4MB in the beginning and 155.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 183.30ms. Allocated memory is still 182.5MB. Free memory was 155.3MB in the beginning and 145.9MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 41.15ms. Allocated memory is still 182.5MB. Free memory was 145.9MB in the beginning and 142.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 32182.27ms. Allocated memory was 182.5MB in the beginning and 275.8MB in the end (delta: 93.3MB). Free memory was 142.2MB in the beginning and 176.7MB in the end (delta: -34.4MB). Peak memory consumption was 60.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.1s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 17.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 65 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 32 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 23.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 88 HoareAnnotationTreeSize, 2 FomulaSimplifications, 119 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 934 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 116 ConstructedInterpolants, 5 QuantifiedInterpolants, 1507 SizeOfPredicates, 8 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 81/213 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_13_74| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |aux_div_v_ULTIMATE.start_ULTIMATE.start_main_~i~0#1Int_13_74|: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.bvinttranslation.IntToBvBackTranslation.convert(IntToBvBackTranslation.java:88) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-10 20:12:45,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...