/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/loops-crafted-1/in-de32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:47:00,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:47:00,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:47:00,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 08:47:00,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:47:00,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:47:00,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:47:00,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:47:00,151 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:47:00,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:47:00,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:47:00,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:47:00,155 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:47:00,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:47:00,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:47:00,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:47:00,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:47:00,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:47:00,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:47:00,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:47:00,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:47:00,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:47:00,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:47:00,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:47:00,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:47:00,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:47:00,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:47:00,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:47:00,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:47:00,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:47:00,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:47:00,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:47:00,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:47:00,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:47:00,195 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:47:00,195 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:47:00,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:47:00,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:47:00,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:47:00,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:47:00,412 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:47:00,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de32.c [2022-03-20 08:47:00,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cfc4cb8/6a6b86a6459f4f80ba34481f91e06325/FLAG1afc287be [2022-03-20 08:47:00,808 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:47:00,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c [2022-03-20 08:47:00,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cfc4cb8/6a6b86a6459f4f80ba34481f91e06325/FLAG1afc287be [2022-03-20 08:47:00,821 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19cfc4cb8/6a6b86a6459f4f80ba34481f91e06325 [2022-03-20 08:47:00,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:47:00,832 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:47:00,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:47:00,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:47:00,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:47:00,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:47:00" (1/1) ... [2022-03-20 08:47:00,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72389fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:00, skipping insertion in model container [2022-03-20 08:47:00,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:47:00" (1/1) ... [2022-03-20 08:47:00,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:47:00,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:47:00,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c[368,381] [2022-03-20 08:47:00,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:47:00,988 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:47:00,996 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c[368,381] [2022-03-20 08:47:01,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:47:01,010 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:47:01,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01 WrapperNode [2022-03-20 08:47:01,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:47:01,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:47:01,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:47:01,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:47:01,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:47:01,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:47:01,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:47:01,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:47:01,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:47:01,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:47:01,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 08:47:01,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 08:47:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:47:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:47:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:47:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:47:01,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:47:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:47:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:47:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:47:01,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:47:01,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:47:01,131 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:47:01,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:47:01,234 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:47:01,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:47:01,238 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 08:47:01,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:47:01 BoogieIcfgContainer [2022-03-20 08:47:01,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:47:01,239 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:47:01,240 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:47:01,240 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:47:01,242 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:47:01" (1/1) ... [2022-03-20 08:47:01,244 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:47:06,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:47:06 BasicIcfg [2022-03-20 08:47:06,982 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:47:06,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:47:06,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:47:06,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:47:06,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:47:00" (1/4) ... [2022-03-20 08:47:06,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2b2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:47:06, skipping insertion in model container [2022-03-20 08:47:06,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:47:01" (2/4) ... [2022-03-20 08:47:06,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2b2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:47:06, skipping insertion in model container [2022-03-20 08:47:06,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:47:01" (3/4) ... [2022-03-20 08:47:06,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2b2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:47:06, skipping insertion in model container [2022-03-20 08:47:06,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:47:06" (4/4) ... [2022-03-20 08:47:06,987 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de32.cqvasr [2022-03-20 08:47:06,990 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:47:06,990 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:47:07,019 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:47:07,023 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 08:47:07,024 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:47:07,033 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:47:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 08:47:07,036 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:47:07,037 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:47:07,037 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:47:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:47:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1909530012, now seen corresponding path program 1 times [2022-03-20 08:47:07,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:47:07,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035353875] [2022-03-20 08:47:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:47:07,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:47:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:47:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:47:07,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:47:07,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035353875] [2022-03-20 08:47:07,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035353875] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:47:07,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:47:07,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:47:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162216947] [2022-03-20 08:47:07,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:47:07,159 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:47:07,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:47:07,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:47:07,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:47:07,182 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:47:07,208 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-03-20 08:47:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:47:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 08:47:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:47:07,215 INFO L225 Difference]: With dead ends: 37 [2022-03-20 08:47:07,216 INFO L226 Difference]: Without dead ends: 15 [2022-03-20 08:47:07,218 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:47:07,222 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:47:07,223 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:47:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-20 08:47:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-20 08:47:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:07,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-03-20 08:47:07,247 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2022-03-20 08:47:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:47:07,247 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-03-20 08:47:07,248 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-03-20 08:47:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-20 08:47:07,249 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:47:07,249 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:47:07,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:47:07,249 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:47:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:47:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash -137167005, now seen corresponding path program 1 times [2022-03-20 08:47:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:47:07,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255907247] [2022-03-20 08:47:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:47:07,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:47:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:47:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:47:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:47:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255907247] [2022-03-20 08:47:07,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255907247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:47:07,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:47:07,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 08:47:07,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533046820] [2022-03-20 08:47:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:47:07,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 08:47:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:47:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 08:47:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 08:47:07,362 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:47:07,414 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-03-20 08:47:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 08:47:07,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-20 08:47:07,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:47:07,415 INFO L225 Difference]: With dead ends: 22 [2022-03-20 08:47:07,415 INFO L226 Difference]: Without dead ends: 16 [2022-03-20 08:47:07,415 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 08:47:07,416 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:47:07,417 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:47:07,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-20 08:47:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-03-20 08:47:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:07,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-03-20 08:47:07,424 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2022-03-20 08:47:07,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:47:07,428 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-03-20 08:47:07,428 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-03-20 08:47:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 08:47:07,429 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:47:07,429 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:47:07,429 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:47:07,429 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:47:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:47:07,430 INFO L85 PathProgramCache]: Analyzing trace with hash 842497847, now seen corresponding path program 1 times [2022-03-20 08:47:07,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:47:07,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660117463] [2022-03-20 08:47:07,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:47:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:47:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:47:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:47:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:47:07,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660117463] [2022-03-20 08:47:07,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660117463] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:47:07,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901877281] [2022-03-20 08:47:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:47:07,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:47:07,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:47:07,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 08:47:07,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:47:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:07,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 08:47:07,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:47:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:47:07,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:47:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:47:07,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901877281] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:47:07,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:47:07,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 16 [2022-03-20 08:47:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772364668] [2022-03-20 08:47:07,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:47:07,926 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 08:47:07,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:47:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 08:47:07,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-03-20 08:47:07,927 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:47:08,120 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-03-20 08:47:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 08:47:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-20 08:47:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:47:08,121 INFO L225 Difference]: With dead ends: 28 [2022-03-20 08:47:08,121 INFO L226 Difference]: Without dead ends: 19 [2022-03-20 08:47:08,122 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-03-20 08:47:08,123 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:47:08,123 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 47 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:47:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-03-20 08:47:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-03-20 08:47:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:08,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-03-20 08:47:08,127 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2022-03-20 08:47:08,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:47:08,127 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-03-20 08:47:08,127 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.3125) internal successors, (21), 13 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:08,127 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-03-20 08:47:08,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 08:47:08,127 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:47:08,127 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:47:08,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 08:47:08,340 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:47:08,340 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:47:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:47:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash -662698397, now seen corresponding path program 1 times [2022-03-20 08:47:08,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:47:08,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890590878] [2022-03-20 08:47:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:47:08,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:47:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:47:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:47:08,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:47:08,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890590878] [2022-03-20 08:47:08,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890590878] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:47:08,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790581372] [2022-03-20 08:47:08,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:47:08,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:47:08,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:47:08,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 08:47:08,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 08:47:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:47:08,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-20 08:47:08,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:47:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 08:47:08,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:47:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 08:47:08,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790581372] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 08:47:08,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 08:47:08,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 18 [2022-03-20 08:47:08,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496905560] [2022-03-20 08:47:08,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 08:47:08,909 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 08:47:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:47:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 08:47:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-20 08:47:08,912 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:09,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:47:09,091 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2022-03-20 08:47:09,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 08:47:09,092 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-03-20 08:47:09,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:47:09,092 INFO L225 Difference]: With dead ends: 18 [2022-03-20 08:47:09,092 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:47:09,093 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2022-03-20 08:47:09,095 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:47:09,096 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:47:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:47:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:47:09,097 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) [2022-03-20 08:47:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:47:09,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-03-20 08:47:09,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:47:09,098 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:47:09,098 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 15 states have internal predecessors, (25), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:47:09,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:47:09,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:47:09,101 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:47:09,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-20 08:47:09,308 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 08:47:09,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:47:09,355 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|)) [2022-03-20 08:47:09,355 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:47:09,356 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:47:09,356 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:47:09,356 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:47:09,356 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:47:09,356 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:47:09,356 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 12 37) the Hoare annotation is: true [2022-03-20 08:47:09,357 INFO L878 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (or (<= (* (div (+ main_~x~0 1) 4294967296) 4294967296) main_~x~0) (= main_~y~0 0)) [2022-03-20 08:47:09,357 INFO L882 garLoopResultBuilder]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2022-03-20 08:47:09,357 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (<= (+ main_~z~0 main_~x~0) (+ main_~y~0 (* (div (+ main_~z~0 main_~x~0 (* (- 1) main_~y~0)) 4294967296) 4294967296))) [2022-03-20 08:47:09,357 INFO L882 garLoopResultBuilder]: For program point L29-1(lines 13 37) no Hoare annotation was computed. [2022-03-20 08:47:09,357 INFO L878 garLoopResultBuilder]: At program point L29-2(lines 29 33) the Hoare annotation is: (= main_~x~0 (* 4294967296 (div main_~x~0 4294967296))) [2022-03-20 08:47:09,357 INFO L882 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 12 37) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 12 37) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2022-03-20 08:47:09,358 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2022-03-20 08:47:09,360 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-03-20 08:47:09,361 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:47:09,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:47:09 BasicIcfg [2022-03-20 08:47:09,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:47:09,373 INFO L158 Benchmark]: Toolchain (without parser) took 8541.45ms. Allocated memory was 167.8MB in the beginning and 223.3MB in the end (delta: 55.6MB). Free memory was 139.3MB in the beginning and 179.9MB in the end (delta: -40.6MB). Peak memory consumption was 14.0MB. Max. memory is 8.0GB. [2022-03-20 08:47:09,373 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:47:09,374 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.99ms. Allocated memory was 167.8MB in the beginning and 223.3MB in the end (delta: 55.6MB). Free memory was 139.1MB in the beginning and 194.2MB in the end (delta: -55.1MB). Peak memory consumption was 5.3MB. Max. memory is 8.0GB. [2022-03-20 08:47:09,374 INFO L158 Benchmark]: Boogie Preprocessor took 17.17ms. Allocated memory is still 223.3MB. Free memory was 194.2MB in the beginning and 193.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 08:47:09,374 INFO L158 Benchmark]: RCFGBuilder took 209.71ms. Allocated memory is still 223.3MB. Free memory was 192.6MB in the beginning and 182.7MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 08:47:09,374 INFO L158 Benchmark]: IcfgTransformer took 5742.31ms. Allocated memory is still 223.3MB. Free memory was 182.7MB in the beginning and 154.9MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2022-03-20 08:47:09,374 INFO L158 Benchmark]: TraceAbstraction took 2389.63ms. Allocated memory is still 223.3MB. Free memory was 154.3MB in the beginning and 179.9MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:47:09,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 122.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.99ms. Allocated memory was 167.8MB in the beginning and 223.3MB in the end (delta: 55.6MB). Free memory was 139.1MB in the beginning and 194.2MB in the end (delta: -55.1MB). Peak memory consumption was 5.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.17ms. Allocated memory is still 223.3MB. Free memory was 194.2MB in the beginning and 193.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 209.71ms. Allocated memory is still 223.3MB. Free memory was 192.6MB in the beginning and 182.7MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 5742.31ms. Allocated memory is still 223.3MB. Free memory was 182.7MB in the beginning and 154.9MB in the end (delta: 27.8MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * TraceAbstraction took 2389.63ms. Allocated memory is still 223.3MB. Free memory was 154.3MB in the beginning and 179.9MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 90 mSDsluCounter, 140 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 51 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 50 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 19 NumberOfFragments, 47 HoareAnnotationTreeSize, 11 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 152 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 589 SizeOfPredicates, 9 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 3/9 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: 16]: Loop Invariant Derived loop invariant: (x + 1) / 4294967296 * 4294967296 <= x || y == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: z + x <= y + (z + x + -1 * y) / 4294967296 * 4294967296 RESULT: Ultimate proved your program to be correct! [2022-03-20 08:47:09,398 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...