/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/openssl-simplified/s3_srvr_1a.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 09:38:01,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 09:38:01,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 09:38:01,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-05 09:38:01,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 09:38:01,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 09:38:01,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 09:38:01,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 09:38:01,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 09:38:01,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 09:38:01,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 09:38:01,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 09:38:01,292 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 09:38:01,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 09:38:01,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 09:38:01,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 09:38:01,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 09:38:01,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-05 09:38:01,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 09:38:01,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 09:38:01,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 09:38:01,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 09:38:01,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 09:38:01,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 09:38:01,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 09:38:01,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 09:38:01,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 09:38:01,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 09:38:01,335 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 09:38:01,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 09:38:01,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 09:38:01,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 09:38:01,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 09:38:01,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:38:01,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 09:38:01,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 09:38:01,337 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 09:38:01,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 09:38:01,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 09:38:01,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 09:38:01,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 09:38:01,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 09:38:01,550 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 09:38:01,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-04-05 09:38:01,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49087cfc1/185d63518329476286cc19ae78bb4c2f/FLAGce3217117 [2022-04-05 09:38:01,929 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 09:38:01,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c [2022-04-05 09:38:01,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49087cfc1/185d63518329476286cc19ae78bb4c2f/FLAGce3217117 [2022-04-05 09:38:01,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49087cfc1/185d63518329476286cc19ae78bb4c2f [2022-04-05 09:38:01,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 09:38:01,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 09:38:01,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 09:38:01,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 09:38:01,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 09:38:01,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:38:01" (1/1) ... [2022-04-05 09:38:01,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4b867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:01, skipping insertion in model container [2022-04-05 09:38:01,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 09:38:01" (1/1) ... [2022-04-05 09:38:01,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 09:38:01,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 09:38:02,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-04-05 09:38:02,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:38:02,116 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 09:38:02,129 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1a.cil.c[14184,14197] [2022-04-05 09:38:02,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 09:38:02,138 INFO L208 MainTranslator]: Completed translation [2022-04-05 09:38:02,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02 WrapperNode [2022-04-05 09:38:02,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 09:38:02,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 09:38:02,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 09:38:02,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 09:38:02,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 09:38:02,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 09:38:02,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 09:38:02,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 09:38:02,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 09:38:02,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 09:38:02,210 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) [2022-04-05 09:38:02,231 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 [2022-04-05 09:38:02,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 09:38:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 09:38:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 09:38:02,239 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 09:38:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 09:38:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 09:38:02,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 09:38:02,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 09:38:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-05 09:38:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 09:38:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-05 09:38:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 09:38:02,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 09:38:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 09:38:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 09:38:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 09:38:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 09:38:02,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 09:38:02,289 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 09:38:02,291 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 09:38:02,470 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 09:38:02,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 09:38:02,474 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-05 09:38:02,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:38:02 BoogieIcfgContainer [2022-04-05 09:38:02,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 09:38:02,476 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 09:38:02,476 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 09:38:02,477 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 09:38:02,479 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:38:02" (1/1) ... [2022-04-05 09:38:02,480 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 09:38:02,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:38:02 BasicIcfg [2022-04-05 09:38:02,507 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 09:38:02,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 09:38:02,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 09:38:02,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 09:38:02,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 09:38:01" (1/4) ... [2022-04-05 09:38:02,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebee77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:38:02, skipping insertion in model container [2022-04-05 09:38:02,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 09:38:02" (2/4) ... [2022-04-05 09:38:02,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebee77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 09:38:02, skipping insertion in model container [2022-04-05 09:38:02,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 09:38:02" (3/4) ... [2022-04-05 09:38:02,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebee77c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 09:38:02, skipping insertion in model container [2022-04-05 09:38:02,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 09:38:02" (4/4) ... [2022-04-05 09:38:02,525 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a.cil.cqvasr [2022-04-05 09:38:02,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 09:38:02,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 09:38:02,571 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 09:38:02,576 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 [2022-04-05 09:38:02,576 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 09:38:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-05 09:38:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-05 09:38:02,605 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:02,606 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:02,606 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:02,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:02,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1676912857, now seen corresponding path program 1 times [2022-04-05 09:38:02,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:02,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584879908] [2022-04-05 09:38:02,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:02,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:02,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:38:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584879908] [2022-04-05 09:38:02,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584879908] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:02,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:02,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:02,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586517678] [2022-04-05 09:38:02,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:02,791 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:02,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:02,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:02,815 INFO L87 Difference]: Start difference. First operand has 51 states, 45 states have (on average 1.6888888888888889) internal successors, (76), 46 states have internal predecessors, (76), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:02,967 INFO L93 Difference]: Finished difference Result 136 states and 224 transitions. [2022-04-05 09:38:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-04-05 09:38:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:02,975 INFO L225 Difference]: With dead ends: 136 [2022-04-05 09:38:02,975 INFO L226 Difference]: Without dead ends: 83 [2022-04-05 09:38:02,977 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:02,979 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:02,979 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 79 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 09:38:03,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-04-05 09:38:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-04-05 09:38:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.5443037974683544) internal successors, (122), 79 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2022-04-05 09:38:03,048 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 9 [2022-04-05 09:38:03,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:03,048 INFO L478 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2022-04-05 09:38:03,049 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2022-04-05 09:38:03,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-05 09:38:03,049 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:03,049 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:03,050 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 09:38:03,050 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:03,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash 141831786, now seen corresponding path program 1 times [2022-04-05 09:38:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:03,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810763448] [2022-04-05 09:38:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-05 09:38:03,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:03,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810763448] [2022-04-05 09:38:03,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810763448] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:03,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:03,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:03,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872030428] [2022-04-05 09:38:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:03,126 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:03,128 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:03,277 INFO L93 Difference]: Finished difference Result 160 states and 250 transitions. [2022-04-05 09:38:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-04-05 09:38:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:03,283 INFO L225 Difference]: With dead ends: 160 [2022-04-05 09:38:03,283 INFO L226 Difference]: Without dead ends: 120 [2022-04-05 09:38:03,284 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:03,285 INFO L913 BasicCegarLoop]: 114 mSDtfsCounter, 118 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:03,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 121 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 09:38:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-04-05 09:38:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-04-05 09:38:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.5172413793103448) internal successors, (176), 116 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 179 transitions. [2022-04-05 09:38:03,323 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 179 transitions. Word has length 14 [2022-04-05 09:38:03,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:03,323 INFO L478 AbstractCegarLoop]: Abstraction has 120 states and 179 transitions. [2022-04-05 09:38:03,324 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,324 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 179 transitions. [2022-04-05 09:38:03,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 09:38:03,324 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:03,324 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:03,324 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-05 09:38:03,325 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:03,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:03,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1247550592, now seen corresponding path program 1 times [2022-04-05 09:38:03,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:03,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021331114] [2022-04-05 09:38:03,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:03,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-05 09:38:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:03,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021331114] [2022-04-05 09:38:03,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021331114] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:03,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:03,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421822307] [2022-04-05 09:38:03,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:03,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:03,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:03,397 INFO L87 Difference]: Start difference. First operand 120 states and 179 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:03,512 INFO L93 Difference]: Finished difference Result 278 states and 429 transitions. [2022-04-05 09:38:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:03,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-05 09:38:03,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:03,514 INFO L225 Difference]: With dead ends: 278 [2022-04-05 09:38:03,514 INFO L226 Difference]: Without dead ends: 164 [2022-04-05 09:38:03,514 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:03,515 INFO L913 BasicCegarLoop]: 72 mSDtfsCounter, 84 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:03,516 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 79 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 09:38:03,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-05 09:38:03,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 156. [2022-04-05 09:38:03,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 152 states have (on average 1.394736842105263) internal successors, (212), 152 states have internal predecessors, (212), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 215 transitions. [2022-04-05 09:38:03,527 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 215 transitions. Word has length 20 [2022-04-05 09:38:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:03,527 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 215 transitions. [2022-04-05 09:38:03,527 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 215 transitions. [2022-04-05 09:38:03,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-05 09:38:03,528 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:03,528 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:03,528 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-05 09:38:03,528 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:03,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:03,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1247520801, now seen corresponding path program 1 times [2022-04-05 09:38:03,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:03,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087528054] [2022-04-05 09:38:03,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:03,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-05 09:38:03,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:03,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087528054] [2022-04-05 09:38:03,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087528054] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:03,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:03,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566135052] [2022-04-05 09:38:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:03,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:03,560 INFO L87 Difference]: Start difference. First operand 156 states and 215 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:03,651 INFO L93 Difference]: Finished difference Result 306 states and 431 transitions. [2022-04-05 09:38:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-04-05 09:38:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:03,653 INFO L225 Difference]: With dead ends: 306 [2022-04-05 09:38:03,653 INFO L226 Difference]: Without dead ends: 205 [2022-04-05 09:38:03,653 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:03,654 INFO L913 BasicCegarLoop]: 117 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:03,655 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 124 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 09:38:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-04-05 09:38:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-04-05 09:38:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 201 states have (on average 1.3880597014925373) internal successors, (279), 201 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 282 transitions. [2022-04-05 09:38:03,665 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 282 transitions. Word has length 20 [2022-04-05 09:38:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:03,666 INFO L478 AbstractCegarLoop]: Abstraction has 205 states and 282 transitions. [2022-04-05 09:38:03,666 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 282 transitions. [2022-04-05 09:38:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-05 09:38:03,667 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:03,667 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:03,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-05 09:38:03,668 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:03,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1375802200, now seen corresponding path program 1 times [2022-04-05 09:38:03,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:03,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957414688] [2022-04-05 09:38:03,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:03,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-05 09:38:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:03,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957414688] [2022-04-05 09:38:03,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957414688] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:03,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:03,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:03,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97854071] [2022-04-05 09:38:03,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:03,724 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:03,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:03,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:03,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:03,725 INFO L87 Difference]: Start difference. First operand 205 states and 282 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:03,827 INFO L93 Difference]: Finished difference Result 406 states and 566 transitions. [2022-04-05 09:38:03,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:03,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-04-05 09:38:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:03,830 INFO L225 Difference]: With dead ends: 406 [2022-04-05 09:38:03,830 INFO L226 Difference]: Without dead ends: 256 [2022-04-05 09:38:03,831 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:03,831 INFO L913 BasicCegarLoop]: 116 mSDtfsCounter, 107 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:03,832 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 123 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 09:38:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-04-05 09:38:03,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2022-04-05 09:38:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 250 states have (on average 1.388) internal successors, (347), 250 states have internal predecessors, (347), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 350 transitions. [2022-04-05 09:38:03,851 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 350 transitions. Word has length 49 [2022-04-05 09:38:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:03,852 INFO L478 AbstractCegarLoop]: Abstraction has 254 states and 350 transitions. [2022-04-05 09:38:03,852 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 350 transitions. [2022-04-05 09:38:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-05 09:38:03,858 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:03,858 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:03,859 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-05 09:38:03,859 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -346615166, now seen corresponding path program 1 times [2022-04-05 09:38:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:03,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501331697] [2022-04-05 09:38:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:03,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:03,898 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-05 09:38:03,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:03,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501331697] [2022-04-05 09:38:03,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501331697] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:03,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:03,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:03,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609506066] [2022-04-05 09:38:03,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:03,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:03,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:03,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:03,900 INFO L87 Difference]: Start difference. First operand 254 states and 350 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:03,970 INFO L93 Difference]: Finished difference Result 510 states and 719 transitions. [2022-04-05 09:38:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-04-05 09:38:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:03,972 INFO L225 Difference]: With dead ends: 510 [2022-04-05 09:38:03,972 INFO L226 Difference]: Without dead ends: 186 [2022-04-05 09:38:03,973 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:03,973 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 85 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:03,973 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 77 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 09:38:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-04-05 09:38:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2022-04-05 09:38:03,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 179 states have (on average 1.2905027932960893) internal successors, (231), 179 states have internal predecessors, (231), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-04-05 09:38:03,980 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 52 [2022-04-05 09:38:03,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:03,981 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-04-05 09:38:03,981 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:03,981 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-04-05 09:38:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-05 09:38:03,981 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 09:38:03,982 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:03,982 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-05 09:38:03,982 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 09:38:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 09:38:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -987922748, now seen corresponding path program 1 times [2022-04-05 09:38:03,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 09:38:03,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267981731] [2022-04-05 09:38:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 09:38:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 09:38:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:04,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 09:38:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 09:38:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-04-05 09:38:04,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 09:38:04,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267981731] [2022-04-05 09:38:04,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267981731] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 09:38:04,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 09:38:04,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-05 09:38:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609484868] [2022-04-05 09:38:04,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 09:38:04,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-05 09:38:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 09:38:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-05 09:38:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-05 09:38:04,023 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 09:38:04,078 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2022-04-05 09:38:04,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-05 09:38:04,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2022-04-05 09:38:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 09:38:04,079 INFO L225 Difference]: With dead ends: 299 [2022-04-05 09:38:04,079 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 09:38:04,079 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-04-05 09:38:04,080 INFO L913 BasicCegarLoop]: 76 mSDtfsCounter, 75 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 09:38:04,080 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 83 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 09:38:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 09:38:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 09:38:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-05 09:38:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 09:38:04,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2022-04-05 09:38:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 09:38:04,081 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 09:38:04,081 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-05 09:38:04,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 09:38:04,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 09:38:04,083 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 09:38:04,084 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-05 09:38:04,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-05 09:38:04,270 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-05 09:38:04,270 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-05 09:38:04,270 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-05 09:38:04,270 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-05 09:38:04,270 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-05 09:38:04,271 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-05 09:38:04,271 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-05 09:38:04,271 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 229) the Hoare annotation is: true [2022-04-05 09:38:04,272 INFO L878 garLoopResultBuilder]: At program point L188(lines 34 223) the Hoare annotation is: (let ((.cse0 (= 3 main_~blastFlag~0))) (or (and .cse0 (<= 8656 main_~s__state~0)) (= main_~blastFlag~0 0) (= main_~blastFlag~0 1) (and .cse0 (not (= main_~s__hit~0 0)) (<= 8640 main_~s__state~0)) (= 2 main_~blastFlag~0))) [2022-04-05 09:38:04,272 INFO L885 garLoopResultBuilder]: At program point L225(lines 20 229) the Hoare annotation is: true [2022-04-05 09:38:04,272 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-04-05 09:38:04,272 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 20 229) no Hoare annotation was computed. [2022-04-05 09:38:04,272 INFO L878 garLoopResultBuilder]: At program point L185(lines 20 229) the Hoare annotation is: false [2022-04-05 09:38:04,273 INFO L882 garLoopResultBuilder]: For program point L41(lines 41 216) no Hoare annotation was computed. [2022-04-05 09:38:04,273 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 20 229) no Hoare annotation was computed. [2022-04-05 09:38:04,274 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 227) no Hoare annotation was computed. [2022-04-05 09:38:04,274 INFO L878 garLoopResultBuilder]: At program point L42(lines 41 216) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,274 INFO L882 garLoopResultBuilder]: For program point L44(lines 44 215) no Hoare annotation was computed. [2022-04-05 09:38:04,278 INFO L882 garLoopResultBuilder]: For program point L90-1(lines 90 92) no Hoare annotation was computed. [2022-04-05 09:38:04,278 INFO L878 garLoopResultBuilder]: At program point L45(lines 44 215) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,278 INFO L882 garLoopResultBuilder]: For program point L48(lines 48 213) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L97-1(lines 86 195) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L878 garLoopResultBuilder]: At program point L49(lines 48 213) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L52(lines 52 211) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L878 garLoopResultBuilder]: At program point L53(lines 52 211) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L56(lines 56 209) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L878 garLoopResultBuilder]: At program point L57(lines 56 209) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L60(lines 60 207) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L117(lines 117 135) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L878 garLoopResultBuilder]: At program point L61(lines 60 207) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L64(lines 64 205) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L118(lines 118 122) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L878 garLoopResultBuilder]: At program point L124(lines 117 135) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,279 INFO L878 garLoopResultBuilder]: At program point L65(lines 64 205) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L68(lines 68 203) no Hoare annotation was computed. [2022-04-05 09:38:04,279 INFO L882 garLoopResultBuilder]: For program point L126(lines 126 130) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L878 garLoopResultBuilder]: At program point L132(lines 125 134) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L147(lines 147 151) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L878 garLoopResultBuilder]: At program point L69(lines 68 203) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L72(lines 72 201) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L878 garLoopResultBuilder]: At program point L73(lines 72 201) the Hoare annotation is: (or (= (+ (- 1) main_~blastFlag~0) 0) (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L76(lines 76 199) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L878 garLoopResultBuilder]: At program point L77(lines 76 199) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (= main_~blastFlag~0 1) .cse0) (and .cse0 (= 2 main_~blastFlag~0)) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0))) [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L80(lines 80 197) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L163-1(lines 86 195) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L878 garLoopResultBuilder]: At program point L81(lines 80 197) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and (= 3 main_~blastFlag~0) .cse0) (and (= main_~blastFlag~0 1) .cse0) (and (= main_~blastFlag~0 0) .cse0) (and (= 2 main_~blastFlag~0) .cse0))) [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L84(lines 84 195) no Hoare annotation was computed. [2022-04-05 09:38:04,280 INFO L882 garLoopResultBuilder]: For program point L174-1(lines 174 176) no Hoare annotation was computed. [2022-04-05 09:38:04,281 INFO L878 garLoopResultBuilder]: At program point L85(lines 84 195) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and (= 3 main_~blastFlag~0) .cse0) (and (= main_~blastFlag~0 1) .cse0) (and (= main_~blastFlag~0 0) .cse0) (and (= 2 main_~blastFlag~0) .cse0))) [2022-04-05 09:38:04,281 INFO L882 garLoopResultBuilder]: For program point L181-1(lines 86 195) no Hoare annotation was computed. [2022-04-05 09:38:04,281 INFO L882 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2022-04-05 09:38:04,283 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-04-05 09:38:04,285 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 09:38:04,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 09:38:04 BasicIcfg [2022-04-05 09:38:04,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 09:38:04,305 INFO L158 Benchmark]: Toolchain (without parser) took 2357.63ms. Allocated memory was 192.9MB in the beginning and 292.6MB in the end (delta: 99.6MB). Free memory was 135.3MB in the beginning and 154.7MB in the end (delta: -19.3MB). Peak memory consumption was 81.7MB. Max. memory is 8.0GB. [2022-04-05 09:38:04,305 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 09:38:04,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.02ms. Allocated memory is still 192.9MB. Free memory was 135.1MB in the beginning and 161.6MB in the end (delta: -26.5MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-04-05 09:38:04,305 INFO L158 Benchmark]: Boogie Preprocessor took 38.10ms. Allocated memory is still 192.9MB. Free memory was 161.6MB in the beginning and 160.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 09:38:04,310 INFO L158 Benchmark]: RCFGBuilder took 295.79ms. Allocated memory is still 192.9MB. Free memory was 160.0MB in the beginning and 147.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-05 09:38:04,310 INFO L158 Benchmark]: IcfgTransformer took 30.55ms. Allocated memory is still 192.9MB. Free memory was 147.4MB in the beginning and 145.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 09:38:04,310 INFO L158 Benchmark]: TraceAbstraction took 1784.35ms. Allocated memory was 192.9MB in the beginning and 292.6MB in the end (delta: 99.6MB). Free memory was 145.3MB in the beginning and 154.7MB in the end (delta: -9.4MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. [2022-04-05 09:38:04,311 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 192.9MB. Free memory is still 151.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 191.02ms. Allocated memory is still 192.9MB. Free memory was 135.1MB in the beginning and 161.6MB in the end (delta: -26.5MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.10ms. Allocated memory is still 192.9MB. Free memory was 161.6MB in the beginning and 160.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 295.79ms. Allocated memory is still 192.9MB. Free memory was 160.0MB in the beginning and 147.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 30.55ms. Allocated memory is still 192.9MB. Free memory was 147.4MB in the beginning and 145.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1784.35ms. Allocated memory was 192.9MB in the beginning and 292.6MB in the end (delta: 99.6MB). Free memory was 145.3MB in the beginning and 154.7MB in the end (delta: -9.4MB). Peak memory consumption was 91.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 227]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 773 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 773 mSDsluCounter, 686 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 65 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 488 IncrementalHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 65 mSolverCounterUnsat, 635 mSDtfsCounter, 488 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 21 PreInvPairs, 87 NumberOfFragments, 285 HoareAnnotationTreeSize, 21 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 138 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 193/193 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 117]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: (((3 == blastFlag && 8656 <= s__state) || (blastFlag == 1 && 8656 <= s__state)) || (blastFlag == 0 && 8656 <= s__state)) || (2 == blastFlag && 8656 <= s__state) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: (((blastFlag == 1 && 8640 <= s__state) || (8640 <= s__state && 2 == blastFlag)) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || (blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((3 == blastFlag && 8656 <= s__state) || blastFlag == 0) || blastFlag == 1) || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || 2 == blastFlag - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: (((3 == blastFlag && 8656 <= s__state) || (blastFlag == 1 && 8656 <= s__state)) || (blastFlag == 0 && 8656 <= s__state)) || (2 == blastFlag && 8656 <= s__state) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: (-1 + blastFlag == 0 || -2 + blastFlag == 0) || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2022-04-05 09:38:04,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...