/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:24:25,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:24:25,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:24:25,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 08:24:25,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:24:25,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:24:25,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:24:25,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:24:25,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:24:25,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:24:25,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:24:25,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:24:25,221 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:24:25,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:24:25,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:24:25,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:24:25,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:24:25,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:24:25,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:24:25,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:24:25,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:24:25,240 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:24:25,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:24:25,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:24:25,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:24:25,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:24:25,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:24:25,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:24:25,273 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:24:25,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:24:25,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:24:25,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:24:25,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:24:25,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:24:25,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:24:25,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:24:25,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:24:25,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:24:25,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:24:25,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:24:25,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:24:25,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:24:25,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:24:25,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:24:25,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:24:25,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:24:25,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:24:25,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:24:25,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:24:25,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:24:25,277 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:24:25,277 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:24:25,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:24:25,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:24:25,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:24:25,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:24:25,526 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:24:25,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2022-03-20 08:24:25,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1e1fc850/90021ad98db2432eb8ad82fc30bbc100/FLAG2f84bd2b5 [2022-03-20 08:24:26,005 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:24:26,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2022-03-20 08:24:26,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1e1fc850/90021ad98db2432eb8ad82fc30bbc100/FLAG2f84bd2b5 [2022-03-20 08:24:26,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1e1fc850/90021ad98db2432eb8ad82fc30bbc100 [2022-03-20 08:24:26,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:24:26,030 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:24:26,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:24:26,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:24:26,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:24:26,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@528a5566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26, skipping insertion in model container [2022-03-20 08:24:26,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:24:26,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:24:26,251 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-lit/gcnr2008.i[895,908] [2022-03-20 08:24:26,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:24:26,287 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:24:26,302 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-lit/gcnr2008.i[895,908] [2022-03-20 08:24:26,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:24:26,326 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:24:26,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26 WrapperNode [2022-03-20 08:24:26,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:24:26,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:24:26,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:24:26,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:24:26,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:24:26,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:24:26,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:24:26,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:24:26,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:24:26,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:26,400 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) [2022-03-20 08:24:26,420 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 [2022-03-20 08:24:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:24:26,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:24:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:24:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 08:24:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:24:26,441 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:24:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:24:26,442 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:24:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 08:24:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 08:24:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:24:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:24:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 08:24:26,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:24:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:24:26,519 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:24:26,521 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:24:26,652 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:24:26,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:24:26,657 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 08:24:26,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:24:26 BoogieIcfgContainer [2022-03-20 08:24:26,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:24:26,659 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:24:26,659 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:24:26,676 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:24:26,703 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:24:26" (1/1) ... [2022-03-20 08:24:26,704 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:24:26,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:24:26 BasicIcfg [2022-03-20 08:24:26,716 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:24:26,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:24:26,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:24:26,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:24:26,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:24:26" (1/4) ... [2022-03-20 08:24:26,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606e903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:24:26, skipping insertion in model container [2022-03-20 08:24:26,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:26" (2/4) ... [2022-03-20 08:24:26,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606e903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:24:26, skipping insertion in model container [2022-03-20 08:24:26,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:24:26" (3/4) ... [2022-03-20 08:24:26,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606e903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:24:26, skipping insertion in model container [2022-03-20 08:24:26,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:24:26" (4/4) ... [2022-03-20 08:24:26,722 INFO L111 eAbstractionObserver]: Analyzing ICFG gcnr2008.iqvasr [2022-03-20 08:24:26,740 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:24:26,741 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:24:26,775 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:24:26,781 INFO L340 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=FINITE_AUTOMATA, 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 [2022-03-20 08:24:26,781 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:24:26,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:24:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 08:24:26,797 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:26,797 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:24:26,798 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:26,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:26,802 INFO L85 PathProgramCache]: Analyzing trace with hash -108758017, now seen corresponding path program 1 times [2022-03-20 08:24:26,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:26,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514650716] [2022-03-20 08:24:26,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:24:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:26,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514650716] [2022-03-20 08:24:26,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514650716] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:24:26,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:24:26,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:24:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000729494] [2022-03-20 08:24:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:24:26,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:24:26,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:27,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:24:27,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:24:27,015 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:27,060 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-03-20 08:24:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:24:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-20 08:24:27,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:27,069 INFO L225 Difference]: With dead ends: 37 [2022-03-20 08:24:27,069 INFO L226 Difference]: Without dead ends: 18 [2022-03-20 08:24:27,071 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:24:27,075 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:27,075 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:24:27,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-20 08:24:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-20 08:24:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-03-20 08:24:27,109 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-03-20 08:24:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:27,110 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-03-20 08:24:27,111 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-03-20 08:24:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 08:24:27,112 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:27,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:24:27,113 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:24:27,114 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:27,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:27,116 INFO L85 PathProgramCache]: Analyzing trace with hash 952898376, now seen corresponding path program 1 times [2022-03-20 08:24:27,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:27,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867184774] [2022-03-20 08:24:27,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:27,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 08:24:27,160 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 08:24:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 08:24:27,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 08:24:27,185 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 08:24:27,187 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:24:27,188 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:24:27,192 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 08:24:27,195 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:24:27,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:24:27 BasicIcfg [2022-03-20 08:24:27,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:24:27,221 INFO L158 Benchmark]: Toolchain (without parser) took 1190.09ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 115.1MB in the beginning and 198.2MB in the end (delta: -83.1MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2022-03-20 08:24:27,222 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:24:27,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.92ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 114.9MB in the beginning and 238.5MB in the end (delta: -123.6MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-03-20 08:24:27,226 INFO L158 Benchmark]: Boogie Preprocessor took 37.08ms. Allocated memory is still 265.3MB. Free memory was 238.5MB in the beginning and 237.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 08:24:27,228 INFO L158 Benchmark]: RCFGBuilder took 291.79ms. Allocated memory is still 265.3MB. Free memory was 237.0MB in the beginning and 225.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 08:24:27,228 INFO L158 Benchmark]: IcfgTransformer took 56.91ms. Allocated memory is still 265.3MB. Free memory was 225.4MB in the beginning and 224.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:24:27,228 INFO L158 Benchmark]: TraceAbstraction took 502.61ms. Allocated memory is still 265.3MB. Free memory was 223.9MB in the beginning and 198.2MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-03-20 08:24:27,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 294.92ms. Allocated memory was 175.1MB in the beginning and 265.3MB in the end (delta: 90.2MB). Free memory was 114.9MB in the beginning and 238.5MB in the end (delta: -123.6MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.08ms. Allocated memory is still 265.3MB. Free memory was 238.5MB in the beginning and 237.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 291.79ms. Allocated memory is still 265.3MB. Free memory was 237.0MB in the beginning and 225.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 56.91ms. Allocated memory is still 265.3MB. Free memory was 225.4MB in the beginning and 224.4MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 502.61ms. Allocated memory is still 265.3MB. Free memory was 223.9MB in the beginning and 198.2MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. 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: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int x,y,z,w; [L26] EXPR w = 0 [L26] EXPR z = w = 0 [L26] EXPR y = z = w = 0 [L26] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L27] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L42] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, 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, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 28 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-03-20 08:24:27,266 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...