/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/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:31:54,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:31:54,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:31:54,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:31:54,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:31:54,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:31:54,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:31:54,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:31:54,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:31:54,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:31:54,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:31:54,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:31:54,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:31:54,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:31:54,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:31:54,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:31:54,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 23:31:54,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:31:54,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:31:54,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:31:54,215 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 23:31:54,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:31:54,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:31:54,265 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:31:54,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:31:54,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:31:54,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:31:54,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:31:54,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:31:54,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:31:54,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:31:54,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:31:54,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:31:54,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:31:54,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:31:54,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:31:54,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:31:54,273 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:31:54,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:31:54,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:31:54,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:31:54,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:31:54,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:31:54,434 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:31:54,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2022-01-10 23:31:54,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2efaac9/f7f5902f9df243269c899b8749e540a4/FLAGf9c0f45fc [2022-01-10 23:31:54,860 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:31:54,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2022-01-10 23:31:54,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2efaac9/f7f5902f9df243269c899b8749e540a4/FLAGf9c0f45fc [2022-01-10 23:31:54,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba2efaac9/f7f5902f9df243269c899b8749e540a4 [2022-01-10 23:31:54,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:31:54,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:31:54,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:31:54,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:31:54,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:31:54,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:31:54" (1/1) ... [2022-01-10 23:31:54,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c382ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:54, skipping insertion in model container [2022-01-10 23:31:54,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:31:54" (1/1) ... [2022-01-10 23:31:54,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:31:54,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:31:55,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2022-01-10 23:31:55,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:31:55,221 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:31:55,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:31:55,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2022-01-10 23:31:55,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:31:55,263 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:31:55,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i[22285,22298] [2022-01-10 23:31:55,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:31:55,309 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:31:55,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55 WrapperNode [2022-01-10 23:31:55,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:31:55,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:31:55,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:31:55,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:31:55,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,352 INFO L137 Inliner]: procedures = 122, calls = 13, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 47 [2022-01-10 23:31:55,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:31:55,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:31:55,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:31:55,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:31:55,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:31:55,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:31:55,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:31:55,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:31:55,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:31:55,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:31:55,408 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 23:31:55,415 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 23:31:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-10 23:31:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:31:55,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 23:31:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:31:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:31:55,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:31:55,530 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:31:55,531 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:31:55,615 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:31:55,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:31:55,626 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 23:31:55,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:31:55 BoogieIcfgContainer [2022-01-10 23:31:55,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:31:55,628 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:31:55,628 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:31:55,636 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:31:55,638 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:31:55" (1/1) ... [2022-01-10 23:31:55,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:31:55 BasicIcfg [2022-01-10 23:31:55,713 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:31:55,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:31:55,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:31:55,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:31:55,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:31:54" (1/4) ... [2022-01-10 23:31:55,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84dfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:31:55, skipping insertion in model container [2022-01-10 23:31:55,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:31:55" (2/4) ... [2022-01-10 23:31:55,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84dfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:31:55, skipping insertion in model container [2022-01-10 23:31:55,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:31:55" (3/4) ... [2022-01-10 23:31:55,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a84dfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:31:55, skipping insertion in model container [2022-01-10 23:31:55,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:31:55" (4/4) ... [2022-01-10 23:31:55,718 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.iTransformedIcfg [2022-01-10 23:31:55,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:31:55,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:31:55,766 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:31:55,771 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 23:31:55,771 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:31:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 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 23:31:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 23:31:55,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:31:55,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:31:55,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:31:55,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:31:55,785 INFO L85 PathProgramCache]: Analyzing trace with hash -593370489, now seen corresponding path program 1 times [2022-01-10 23:31:55,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:31:55,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746198201] [2022-01-10 23:31:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:31:55,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:31:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:31:55,984 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 23:31:55,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:31:55,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746198201] [2022-01-10 23:31:55,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746198201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:31:55,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:31:55,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:31:55,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447107743] [2022-01-10 23:31:55,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:31:55,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:31:55,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:31:56,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:31:56,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:31:56,010 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.368421052631579) internal successors, (26), 21 states have internal predecessors, (26), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 23:31:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:31:56,037 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-01-10 23:31:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:31:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2022-01-10 23:31:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:31:56,044 INFO L225 Difference]: With dead ends: 41 [2022-01-10 23:31:56,044 INFO L226 Difference]: Without dead ends: 20 [2022-01-10 23:31:56,046 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 23:31:56,048 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:31:56,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:31:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-01-10 23:31:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2022-01-10 23:31:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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 23:31:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-01-10 23:31:56,070 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2022-01-10 23:31:56,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:31:56,071 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-01-10 23:31:56,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 23:31:56,071 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-01-10 23:31:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 23:31:56,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:31:56,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:31:56,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:31:56,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:31:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:31:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash -564741338, now seen corresponding path program 1 times [2022-01-10 23:31:56,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:31:56,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535079572] [2022-01-10 23:31:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:31:56,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:31:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:31:56,136 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 23:31:56,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:31:56,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535079572] [2022-01-10 23:31:56,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535079572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:31:56,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:31:56,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:31:56,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549972742] [2022-01-10 23:31:56,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:31:56,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:31:56,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:31:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:31:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:31:56,138 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 23:31:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:31:56,143 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-01-10 23:31:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:31:56,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2022-01-10 23:31:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:31:56,147 INFO L225 Difference]: With dead ends: 25 [2022-01-10 23:31:56,147 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 23:31:56,147 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 23:31:56,148 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:31:56,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:31:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 23:31:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 23:31:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 23:31:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-01-10 23:31:56,151 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2022-01-10 23:31:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:31:56,151 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-01-10 23:31:56,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 23:31:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-01-10 23:31:56,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 23:31:56,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:31:56,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:31:56,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:31:56,152 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:31:56,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:31:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1014834399, now seen corresponding path program 1 times [2022-01-10 23:31:56,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:31:56,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846143951] [2022-01-10 23:31:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:31:56,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:31:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:31:56,251 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 23:31:56,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:31:56,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846143951] [2022-01-10 23:31:56,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846143951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:31:56,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:31:56,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:31:56,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859286369] [2022-01-10 23:31:56,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:31:56,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:31:56,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:31:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:31:56,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:31:56,253 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 23:31:56,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:31:56,277 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2022-01-10 23:31:56,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:31:56,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-01-10 23:31:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:31:56,278 INFO L225 Difference]: With dead ends: 19 [2022-01-10 23:31:56,278 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 23:31:56,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:31:56,279 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:31:56,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:31:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 23:31:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 23:31:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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 23:31:56,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-01-10 23:31:56,282 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2022-01-10 23:31:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:31:56,282 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-01-10 23:31:56,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 23:31:56,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-01-10 23:31:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 23:31:56,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:31:56,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:31:56,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:31:56,283 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:31:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:31:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 447500299, now seen corresponding path program 1 times [2022-01-10 23:31:56,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:31:56,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488206660] [2022-01-10 23:31:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:31:56,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:31:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:31:56,308 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 23:31:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 23:31:56,343 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-10 23:31:56,343 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 23:31:56,344 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 23:31:56,345 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 23:31:56,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:31:56,347 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-01-10 23:31:56,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 23:31:56,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:31:56 BasicIcfg [2022-01-10 23:31:56,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 23:31:56,376 INFO L158 Benchmark]: Toolchain (without parser) took 1482.80ms. Allocated memory is still 185.6MB. Free memory was 134.0MB in the beginning and 76.0MB in the end (delta: 58.0MB). Peak memory consumption was 59.0MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,376 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 23:31:56,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.98ms. Allocated memory is still 185.6MB. Free memory was 133.8MB in the beginning and 147.4MB in the end (delta: -13.6MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.78ms. Allocated memory is still 185.6MB. Free memory was 146.9MB in the beginning and 145.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,377 INFO L158 Benchmark]: Boogie Preprocessor took 28.07ms. Allocated memory is still 185.6MB. Free memory was 145.3MB in the beginning and 143.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,378 INFO L158 Benchmark]: RCFGBuilder took 246.01ms. Allocated memory is still 185.6MB. Free memory was 143.7MB in the beginning and 132.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,378 INFO L158 Benchmark]: IcfgTransformer took 85.37ms. Allocated memory is still 185.6MB. Free memory was 132.7MB in the beginning and 129.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,378 INFO L158 Benchmark]: TraceAbstraction took 661.37ms. Allocated memory is still 185.6MB. Free memory was 129.0MB in the beginning and 76.0MB in the end (delta: 53.0MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. [2022-01-10 23:31:56,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 151.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.98ms. Allocated memory is still 185.6MB. Free memory was 133.8MB in the beginning and 147.4MB in the end (delta: -13.6MB). Peak memory consumption was 11.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.78ms. Allocated memory is still 185.6MB. Free memory was 146.9MB in the beginning and 145.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.07ms. Allocated memory is still 185.6MB. Free memory was 145.3MB in the beginning and 143.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 246.01ms. Allocated memory is still 185.6MB. Free memory was 143.7MB in the beginning and 132.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 85.37ms. Allocated memory is still 185.6MB. Free memory was 132.7MB in the beginning and 129.6MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 661.37ms. Allocated memory is still 185.6MB. Free memory was 129.0MB in the beginning and 76.0MB in the end (delta: 53.0MB). Peak memory consumption was 53.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 516]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L518] int globalState = 0; VAL [globalState=0] [L523] CALL, EXPR l_malloc(sizeof(int)) [L529] void *retVal = malloc(size); [L530] COND TRUE retVal != ((void *)0) [L531] globalState=1 VAL [\old(size)=4, globalState=1, retVal={-3:0}, size=4] [L532] return retVal; VAL [\old(size)=4, \result={-3:0}, globalState=1, retVal={-3:0}, size=4] [L523] RET, EXPR l_malloc(sizeof(int)) [L523] int *a = (int*) l_malloc(sizeof(int)); [L524] CALL l_free(a) [L535] COND TRUE ptr!=((void *)0) VAL [globalState=1, ptr={-3:0}, ptr={-3:0}] [L535] (globalState == 1) ? (0) : __blast_assert () VAL [globalState=1, ptr={-3:0}, ptr={-3:0}] [L536] globalState = 0 [L524] RET l_free(a) [L525] CALL l_free(a) [L535] COND TRUE ptr!=((void *)0) VAL [globalState=0, ptr={-3:0}, ptr={-3:0}] [L535] (globalState == 1) ? (0) : __blast_assert () [L535] CALL __blast_assert () [L516] reach_error() VAL [globalState=0] - UnprovableResult [Line: 516]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 40 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 53 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-10 23:31:56,406 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...