/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_1b.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 13:39:39,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 13:39:39,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 13:39:39,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 13:39:39,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 13:39:39,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 13:39:39,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 13:39:39,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 13:39:39,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 13:39:39,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 13:39:39,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 13:39:39,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 13:39:39,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 13:39:39,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 13:39:39,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 13:39:39,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 13:39:39,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 13:39:40,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 13:39:40,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 13:39:40,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 13:39:40,009 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 13:39:40,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 13:39:40,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 13:39:40,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 13:39:40,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 13:39:40,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 13:39:40,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 13:39:40,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 13:39:40,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 13:39:40,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 13:39:40,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 13:39:40,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 13:39:40,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 13:39:40,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 13:39:40,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 13:39:40,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 13:39:40,072 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 13:39:40,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 13:39:40,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 13:39:40,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 13:39:40,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 13:39:40,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 13:39:40,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 13:39:40,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:39:40,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 13:39:40,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 13:39:40,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 13:39:40,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 13:39:40,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 13:39:40,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 13:39:40,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 13:39:40,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 13:39:40,078 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 13:39:40,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 13:39:40,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 13:39:40,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 13:39:40,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 13:39:40,301 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 13:39:40,302 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 13:39:40,303 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-04-06 13:39:40,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c83827b/bcf558708dba4a4fb5327d147560ed3b/FLAG8d705cc3c [2022-04-06 13:39:40,769 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 13:39:40,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/openssl-simplified/s3_srvr_1b.cil.c [2022-04-06 13:39:40,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c83827b/bcf558708dba4a4fb5327d147560ed3b/FLAG8d705cc3c [2022-04-06 13:39:41,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c83827b/bcf558708dba4a4fb5327d147560ed3b [2022-04-06 13:39:41,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 13:39:41,187 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 13:39:41,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 13:39:41,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 13:39:41,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 13:39:41,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4451aad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41, skipping insertion in model container [2022-04-06 13:39:41,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 13:39:41,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 13:39:41,357 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_1b.cil.c[8244,8257] [2022-04-06 13:39:41,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:39:41,366 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 13:39:41,383 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_1b.cil.c[8244,8257] [2022-04-06 13:39:41,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 13:39:41,395 INFO L208 MainTranslator]: Completed translation [2022-04-06 13:39:41,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41 WrapperNode [2022-04-06 13:39:41,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 13:39:41,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 13:39:41,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 13:39:41,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 13:39:41,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 13:39:41,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 13:39:41,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 13:39:41,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 13:39:41,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 13:39:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 13:39:41,477 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) [2022-04-06 13:39:41,499 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 [2022-04-06 13:39:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 13:39:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 13:39:41,513 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 13:39:41,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 13:39:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 13:39:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 13:39:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 13:39:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 13:39:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2022-04-06 13:39:41,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 13:39:41,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 13:39:41,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 13:39:41,565 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 13:39:41,567 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 13:39:41,680 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 13:39:41,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 13:39:41,686 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 13:39:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:39:41 BoogieIcfgContainer [2022-04-06 13:39:41,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 13:39:41,690 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 13:39:41,691 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 13:39:41,692 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 13:39:41,694 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:39:41" (1/1) ... [2022-04-06 13:39:41,696 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 13:39:41,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:39:41 BasicIcfg [2022-04-06 13:39:41,721 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 13:39:41,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 13:39:41,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 13:39:41,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 13:39:41,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:39:41" (1/4) ... [2022-04-06 13:39:41,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343021a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:39:41, skipping insertion in model container [2022-04-06 13:39:41,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:39:41" (2/4) ... [2022-04-06 13:39:41,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343021a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:39:41, skipping insertion in model container [2022-04-06 13:39:41,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:39:41" (3/4) ... [2022-04-06 13:39:41,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343021a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:39:41, skipping insertion in model container [2022-04-06 13:39:41,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 01:39:41" (4/4) ... [2022-04-06 13:39:41,746 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1b.cil.cqvasr [2022-04-06 13:39:41,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 13:39:41,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 13:39:41,793 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 13:39:41,816 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 [2022-04-06 13:39:41,817 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 13:39:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 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) [2022-04-06 13:39:41,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-04-06 13:39:41,837 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:39:41,837 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:39:41,838 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:39:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:39:41,842 INFO L85 PathProgramCache]: Analyzing trace with hash 472059503, now seen corresponding path program 1 times [2022-04-06 13:39:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:39:41,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152499150] [2022-04-06 13:39:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:39:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:39:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:39:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:39:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:39:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152499150] [2022-04-06 13:39:41,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152499150] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:39:41,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:39:41,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 13:39:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457443060] [2022-04-06 13:39:41,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:39:41,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 13:39:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:39:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 13:39:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 13:39:42,023 INFO L87 Difference]: Start difference. First operand has 29 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 24 states have internal predecessors, (40), 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) [2022-04-06 13:39:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:39:42,182 INFO L93 Difference]: Finished difference Result 70 states and 115 transitions. [2022-04-06 13:39:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 13:39:42,184 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 [2022-04-06 13:39:42,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:39:42,201 INFO L225 Difference]: With dead ends: 70 [2022-04-06 13:39:42,201 INFO L226 Difference]: Without dead ends: 39 [2022-04-06 13:39:42,204 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 [2022-04-06 13:39:42,210 INFO L913 BasicCegarLoop]: 35 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:39:42,212 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 44 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 13:39:42,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-06 13:39:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-04-06 13:39:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 35 states have (on average 1.4285714285714286) internal successors, (50), 35 states have internal predecessors, (50), 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) [2022-04-06 13:39:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-04-06 13:39:42,255 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 9 [2022-04-06 13:39:42,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:39:42,255 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-04-06 13:39:42,256 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) [2022-04-06 13:39:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-04-06 13:39:42,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-06 13:39:42,257 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:39:42,257 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:39:42,257 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 13:39:42,257 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:39:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:39:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash -493282618, now seen corresponding path program 1 times [2022-04-06 13:39:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:39:42,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501925509] [2022-04-06 13:39:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:39:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:39:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:39:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:39:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:39:42,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501925509] [2022-04-06 13:39:42,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501925509] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:39:42,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:39:42,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 13:39:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787476623] [2022-04-06 13:39:42,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:39:42,327 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 13:39:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:39:42,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 13:39:42,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 13:39:42,329 INFO L87 Difference]: Start difference. First operand 39 states and 53 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) [2022-04-06 13:39:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:39:42,399 INFO L93 Difference]: Finished difference Result 86 states and 120 transitions. [2022-04-06 13:39:42,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 13:39:42,399 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 [2022-04-06 13:39:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:39:42,401 INFO L225 Difference]: With dead ends: 86 [2022-04-06 13:39:42,401 INFO L226 Difference]: Without dead ends: 53 [2022-04-06 13:39:42,401 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 [2022-04-06 13:39:42,403 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:39:42,403 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 43 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 13:39:42,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-04-06 13:39:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2022-04-06 13:39:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 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) [2022-04-06 13:39:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2022-04-06 13:39:42,413 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 14 [2022-04-06 13:39:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:39:42,413 INFO L478 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2022-04-06 13:39:42,413 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) [2022-04-06 13:39:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2022-04-06 13:39:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-06 13:39:42,414 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:39:42,414 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:39:42,414 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 13:39:42,414 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:39:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:39:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -493252827, now seen corresponding path program 1 times [2022-04-06 13:39:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:39:42,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817741605] [2022-04-06 13:39:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:39:42,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:39:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:39:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 13:39:42,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:39:42,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817741605] [2022-04-06 13:39:42,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817741605] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:39:42,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:39:42,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 13:39:42,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452970193] [2022-04-06 13:39:42,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:39:42,478 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 13:39:42,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:39:42,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 13:39:42,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 13:39:42,479 INFO L87 Difference]: Start difference. First operand 49 states and 63 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) [2022-04-06 13:39:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:39:42,563 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2022-04-06 13:39:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 13:39:42,564 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 [2022-04-06 13:39:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:39:42,565 INFO L225 Difference]: With dead ends: 90 [2022-04-06 13:39:42,565 INFO L226 Difference]: Without dead ends: 67 [2022-04-06 13:39:42,566 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 [2022-04-06 13:39:42,567 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:39:42,567 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 51 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 13:39:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-04-06 13:39:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-04-06 13:39:42,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 63 states have internal predecessors, (83), 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) [2022-04-06 13:39:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2022-04-06 13:39:42,594 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 14 [2022-04-06 13:39:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:39:42,594 INFO L478 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2022-04-06 13:39:42,594 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) [2022-04-06 13:39:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2022-04-06 13:39:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-04-06 13:39:42,595 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:39:42,596 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:39:42,596 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 13:39:42,596 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:39:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:39:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1278160632, now seen corresponding path program 1 times [2022-04-06 13:39:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:39:42,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349321507] [2022-04-06 13:39:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:39:42,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:39:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:39:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 13:39:42,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:39:42,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349321507] [2022-04-06 13:39:42,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349321507] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:39:42,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:39:42,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 13:39:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158297705] [2022-04-06 13:39:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:39:42,667 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 13:39:42,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:39:42,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 13:39:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 13:39:42,668 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-04-06 13:39:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:39:42,762 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2022-04-06 13:39:42,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 13:39:42,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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 21 [2022-04-06 13:39:42,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:39:42,765 INFO L225 Difference]: With dead ends: 130 [2022-04-06 13:39:42,765 INFO L226 Difference]: Without dead ends: 89 [2022-04-06 13:39:42,766 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 [2022-04-06 13:39:42,767 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 13:39:42,768 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 53 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 13:39:42,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-04-06 13:39:42,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2022-04-06 13:39:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 83 states have (on average 1.3132530120481927) internal successors, (109), 83 states have internal predecessors, (109), 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) [2022-04-06 13:39:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2022-04-06 13:39:42,780 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 21 [2022-04-06 13:39:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:39:42,781 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2022-04-06 13:39:42,781 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-04-06 13:39:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2022-04-06 13:39:42,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-06 13:39:42,782 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:39:42,782 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:39:42,782 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-06 13:39:42,782 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:39:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:39:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1498444954, now seen corresponding path program 1 times [2022-04-06 13:39:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:39:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097621020] [2022-04-06 13:39:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:39:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:39:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:39:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-06 13:39:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:39:42,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097621020] [2022-04-06 13:39:42,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097621020] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:39:42,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:39:42,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 13:39:42,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974572653] [2022-04-06 13:39:42,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:39:42,830 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 13:39:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:39:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 13:39:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 13:39:42,831 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-04-06 13:39:42,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:39:42,890 INFO L93 Difference]: Finished difference Result 167 states and 218 transitions. [2022-04-06 13:39:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 13:39:42,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 24 [2022-04-06 13:39:42,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:39:42,891 INFO L225 Difference]: With dead ends: 167 [2022-04-06 13:39:42,891 INFO L226 Difference]: Without dead ends: 67 [2022-04-06 13:39:42,892 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 [2022-04-06 13:39:42,893 INFO L913 BasicCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:39:42,894 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 41 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 13:39:42,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-04-06 13:39:42,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2022-04-06 13:39:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 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) [2022-04-06 13:39:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2022-04-06 13:39:42,903 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 24 [2022-04-06 13:39:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:39:42,904 INFO L478 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2022-04-06 13:39:42,904 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-04-06 13:39:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2022-04-06 13:39:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 13:39:42,905 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 13:39:42,905 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 13:39:42,905 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-06 13:39:42,905 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 13:39:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 13:39:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1101537560, now seen corresponding path program 1 times [2022-04-06 13:39:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 13:39:42,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867347010] [2022-04-06 13:39:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 13:39:42,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 13:39:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 13:39:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 13:39:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 13:39:42,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 13:39:42,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867347010] [2022-04-06 13:39:42,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867347010] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 13:39:42,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 13:39:42,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 13:39:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585988987] [2022-04-06 13:39:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 13:39:42,984 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 13:39:42,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 13:39:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 13:39:42,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 13:39:42,985 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-04-06 13:39:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 13:39:43,018 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2022-04-06 13:39:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-06 13:39:43,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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 38 [2022-04-06 13:39:43,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 13:39:43,019 INFO L225 Difference]: With dead ends: 87 [2022-04-06 13:39:43,019 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 13:39:43,020 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 [2022-04-06 13:39:43,021 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 13:39:43,021 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 13:39:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 13:39:43,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 13:39:43,022 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) [2022-04-06 13:39:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 13:39:43,022 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-04-06 13:39:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 13:39:43,023 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 13:39:43,023 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 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) [2022-04-06 13:39:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 13:39:43,023 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 13:39:43,025 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 13:39:43,026 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-06 13:39:43,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 13:39:43,164 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|)) [2022-04-06 13:39:43,164 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 13:39:43,164 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 13:39:43,164 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 13:39:43,164 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 13:39:43,164 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 13:39:43,165 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 13:39:43,165 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 152) the Hoare annotation is: true [2022-04-06 13:39:43,165 INFO L878 garLoopResultBuilder]: At program point L111(lines 29 146) the Hoare annotation is: (or (= main_~blastFlag~0 0) (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) (<= 8640 main_~s__state~0)) (= 2 main_~blastFlag~0)) [2022-04-06 13:39:43,165 INFO L885 garLoopResultBuilder]: At program point L148(lines 20 152) the Hoare annotation is: true [2022-04-06 13:39:43,165 INFO L882 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2022-04-06 13:39:43,165 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 20 152) no Hoare annotation was computed. [2022-04-06 13:39:43,165 INFO L878 garLoopResultBuilder]: At program point L108(lines 20 152) the Hoare annotation is: false [2022-04-06 13:39:43,165 INFO L882 garLoopResultBuilder]: For program point L36(lines 36 139) no Hoare annotation was computed. [2022-04-06 13:39:43,166 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 20 152) no Hoare annotation was computed. [2022-04-06 13:39:43,166 INFO L882 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 150) no Hoare annotation was computed. [2022-04-06 13:39:43,166 INFO L878 garLoopResultBuilder]: At program point L37(lines 36 139) the Hoare annotation is: (or (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-06 13:39:43,166 INFO L882 garLoopResultBuilder]: For program point L41(lines 41 136) no Hoare annotation was computed. [2022-04-06 13:39:43,166 INFO L882 garLoopResultBuilder]: For program point L69-1(lines 65 118) no Hoare annotation was computed. [2022-04-06 13:39:43,166 INFO L878 garLoopResultBuilder]: At program point L42(lines 41 136) the Hoare annotation is: (or (= (+ (- 2) main_~blastFlag~0) 0) (= main_~blastFlag~0 0)) [2022-04-06 13:39:43,166 INFO L882 garLoopResultBuilder]: For program point L57(lines 57 122) no Hoare annotation was computed. [2022-04-06 13:39:43,167 INFO L882 garLoopResultBuilder]: For program point L81(lines 81 85) no Hoare annotation was computed. [2022-04-06 13:39:43,167 INFO L878 garLoopResultBuilder]: At program point L58(lines 57 122) the Hoare annotation is: (let ((.cse0 (<= 8640 main_~s__state~0))) (or (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0) (and (= (+ (- 2) main_~blastFlag~0) 0) .cse0))) [2022-04-06 13:39:43,167 INFO L882 garLoopResultBuilder]: For program point L61(lines 61 120) no Hoare annotation was computed. [2022-04-06 13:39:43,167 INFO L882 garLoopResultBuilder]: For program point L89-1(lines 65 118) no Hoare annotation was computed. [2022-04-06 13:39:43,167 INFO L878 garLoopResultBuilder]: At program point L62(lines 61 120) the Hoare annotation is: (let ((.cse0 (<= 8656 main_~s__state~0))) (or (and (= 3 main_~blastFlag~0) (not (= main_~s__hit~0 0)) .cse0) (and (= main_~blastFlag~0 0) .cse0) (and (= 2 main_~blastFlag~0) .cse0))) [2022-04-06 13:39:43,167 INFO L882 garLoopResultBuilder]: For program point L100-1(lines 65 118) no Hoare annotation was computed. [2022-04-06 13:39:43,168 INFO L882 garLoopResultBuilder]: For program point L104-1(lines 65 118) no Hoare annotation was computed. [2022-04-06 13:39:43,168 INFO L882 garLoopResultBuilder]: For program point L107(lines 107 109) no Hoare annotation was computed. [2022-04-06 13:39:43,172 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-06 13:39:43,175 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 13:39:43,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:39:43 BasicIcfg [2022-04-06 13:39:43,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 13:39:43,205 INFO L158 Benchmark]: Toolchain (without parser) took 2017.90ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 146.0MB in the beginning and 131.6MB in the end (delta: 14.3MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-04-06 13:39:43,206 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 162.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 13:39:43,208 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.07ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 177.4MB in the beginning and 226.5MB in the end (delta: -49.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-06 13:39:43,211 INFO L158 Benchmark]: Boogie Preprocessor took 47.94ms. Allocated memory is still 250.6MB. Free memory was 226.5MB in the beginning and 225.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 13:39:43,212 INFO L158 Benchmark]: RCFGBuilder took 244.80ms. Allocated memory is still 250.6MB. Free memory was 225.0MB in the beginning and 214.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 13:39:43,212 INFO L158 Benchmark]: IcfgTransformer took 30.35ms. Allocated memory is still 250.6MB. Free memory was 214.0MB in the beginning and 212.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 13:39:43,213 INFO L158 Benchmark]: TraceAbstraction took 1464.40ms. Allocated memory is still 250.6MB. Free memory was 212.4MB in the beginning and 131.6MB in the end (delta: 80.7MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2022-04-06 13:39:43,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 199.2MB. Free memory is still 162.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.07ms. Allocated memory was 199.2MB in the beginning and 250.6MB in the end (delta: 51.4MB). Free memory was 177.4MB in the beginning and 226.5MB in the end (delta: -49.1MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.94ms. Allocated memory is still 250.6MB. Free memory was 226.5MB in the beginning and 225.5MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.80ms. Allocated memory is still 250.6MB. Free memory was 225.0MB in the beginning and 214.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 30.35ms. Allocated memory is still 250.6MB. Free memory was 214.0MB in the beginning and 212.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1464.40ms. Allocated memory is still 250.6MB. Free memory was 212.4MB in the beginning and 131.6MB in the end (delta: 80.7MB). Peak memory consumption was 80.7MB. 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: 150]: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 272 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 228 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 32 NumberOfFragments, 102 HoareAnnotationTreeSize, 11 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 42/42 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: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: -2 + blastFlag == 0 || blastFlag == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (blastFlag == 0 || ((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state)) || 2 == blastFlag - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((3 == blastFlag && !(s__hit == 0)) && 8640 <= s__state) || (blastFlag == 0 && 8640 <= s__state)) || (-2 + blastFlag == 0 && 8640 <= s__state) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: (((3 == blastFlag && !(s__hit == 0)) && 8656 <= s__state) || (blastFlag == 0 && 8656 <= s__state)) || (2 == blastFlag && 8656 <= s__state) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: -2 + blastFlag == 0 || blastFlag == 0 RESULT: Ultimate proved your program to be correct! [2022-04-06 13:39:43,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...