/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/seq-3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:23:58,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:23:58,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:23:58,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 08:23:58,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:23:58,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:23:58,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:23:58,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:23:58,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:23:58,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:23:58,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:23:58,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:23:58,791 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:23:58,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:23:58,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:23:58,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:23:58,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:23:58,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:23:58,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:23:58,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:23:58,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:23:58,809 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 08:23:58,839 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:23:58,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:23:58,840 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:23:58,840 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:23:58,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:23:58,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:23:58,841 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:23:58,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:23:58,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:23:58,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:23:58,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:23:58,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:23:58,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:23:58,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:23:58,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:23:58,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:23:58,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:23:58,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:23:58,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:23:58,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:23:58,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:23:58,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:23:58,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:23:58,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:23:58,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:23:58,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:23:58,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:23:58,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:23:58,845 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:23:58,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:23:59,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:23:59,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:23:59,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:23:59,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:23:59,053 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:23:59,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/seq-3.i [2022-03-20 08:23:59,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac047bf2e/871ca68e733644938f2858700b57c127/FLAG0c19b6051 [2022-03-20 08:23:59,461 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:23:59,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i [2022-03-20 08:23:59,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac047bf2e/871ca68e733644938f2858700b57c127/FLAG0c19b6051 [2022-03-20 08:23:59,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac047bf2e/871ca68e733644938f2858700b57c127 [2022-03-20 08:23:59,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:23:59,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:23:59,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:23:59,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:23:59,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:23:59,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:23:59" (1/1) ... [2022-03-20 08:23:59,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6618a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:23:59, skipping insertion in model container [2022-03-20 08:23:59,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:23:59" (1/1) ... [2022-03-20 08:23:59,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:23:59,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:24:00,056 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i[893,906] [2022-03-20 08:24:00,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:24:00,080 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:24:00,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i[893,906] [2022-03-20 08:24:00,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:24:00,119 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:24:00,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00 WrapperNode [2022-03-20 08:24:00,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:24:00,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:24:00,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:24:00,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:24:00,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:24:00,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:24:00,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:24:00,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:24:00,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:24:00,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:24:00,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 08:24:00,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 08:24:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:24:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:24:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:24:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 08:24:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:24:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:24:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:24:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:24:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:24:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:24:00,287 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:24:00,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:24:00,400 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:24:00,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:24:00,406 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 08:24:00,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:24:00 BoogieIcfgContainer [2022-03-20 08:24:00,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:24:00,408 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:24:00,408 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:24:00,409 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:24:00,412 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:24:00" (1/1) ... [2022-03-20 08:24:00,414 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:24:01,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:24:01 BasicIcfg [2022-03-20 08:24:01,027 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:24:01,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:24:01,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:24:01,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:24:01,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:23:59" (1/4) ... [2022-03-20 08:24:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a21b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:24:01, skipping insertion in model container [2022-03-20 08:24:01,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:24:00" (2/4) ... [2022-03-20 08:24:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a21b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:24:01, skipping insertion in model container [2022-03-20 08:24:01,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:24:00" (3/4) ... [2022-03-20 08:24:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a21b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:24:01, skipping insertion in model container [2022-03-20 08:24:01,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:24:01" (4/4) ... [2022-03-20 08:24:01,034 INFO L111 eAbstractionObserver]: Analyzing ICFG seq-3.iqvasr [2022-03-20 08:24:01,039 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:24:01,039 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:24:01,077 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:24:01,083 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 08:24:01,083 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:24:01,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:24:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 08:24:01,097 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:01,097 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:24:01,098 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:01,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:01,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1622270520, now seen corresponding path program 1 times [2022-03-20 08:24:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:01,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912798112] [2022-03-20 08:24:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:01,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:24:01,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:01,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912798112] [2022-03-20 08:24:01,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912798112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:24:01,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:24:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 08:24:01,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693026031] [2022-03-20 08:24:01,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:24:01,253 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 08:24:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:01,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 08:24:01,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:24:01,276 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:01,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:01,307 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2022-03-20 08:24:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 08:24:01,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 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 17 [2022-03-20 08:24:01,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:01,320 INFO L225 Difference]: With dead ends: 41 [2022-03-20 08:24:01,320 INFO L226 Difference]: Without dead ends: 21 [2022-03-20 08:24:01,324 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 08:24:01,335 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:01,336 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 29 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:24:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-03-20 08:24:01,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-03-20 08:24:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 08:24:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-03-20 08:24:01,365 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 17 [2022-03-20 08:24:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:01,365 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-03-20 08:24:01,365 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:01,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-03-20 08:24:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 08:24:01,366 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:24:01,366 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:24:01,367 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:24:01,367 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:24:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:24:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1752745994, now seen corresponding path program 1 times [2022-03-20 08:24:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:24:01,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743580979] [2022-03-20 08:24:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:24:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:24:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:24:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:24:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:24:01,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:24:01,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743580979] [2022-03-20 08:24:01,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743580979] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:24:01,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:24:01,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 08:24:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850326392] [2022-03-20 08:24:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:24:01,529 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 08:24:01,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:24:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 08:24:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-20 08:24:01,530 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:24:01,624 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-03-20 08:24:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 08:24:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 17 [2022-03-20 08:24:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:24:01,625 INFO L225 Difference]: With dead ends: 23 [2022-03-20 08:24:01,626 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 08:24:01,632 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-03-20 08:24:01,634 INFO L913 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:24:01,636 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 32 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:24:01,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 08:24:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 08:24:01,642 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 08:24:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 08:24:01,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2022-03-20 08:24:01,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:24:01,642 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 08:24:01,643 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 08:24:01,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 08:24:01,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 08:24:01,645 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:24:01,646 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:24:01,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 08:24:01,683 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 08:24:01,683 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:24:01,683 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:24:01,684 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 08:24:01,684 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 08:24:01,684 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 08:24:01,684 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 08:24:01,684 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 47) the Hoare annotation is: true [2022-03-20 08:24:01,684 INFO L882 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2022-03-20 08:24:01,684 INFO L882 garLoopResultBuilder]: For program point L42-3(lines 24 47) no Hoare annotation was computed. [2022-03-20 08:24:01,686 INFO L882 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-03-20 08:24:01,686 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 47) no Hoare annotation was computed. [2022-03-20 08:24:01,686 INFO L878 garLoopResultBuilder]: At program point L32-2(lines 32 35) the Hoare annotation is: (= main_~i0~0 0) [2022-03-20 08:24:01,686 INFO L882 garLoopResultBuilder]: For program point L32-3(lines 32 35) no Hoare annotation was computed. [2022-03-20 08:24:01,686 INFO L878 garLoopResultBuilder]: At program point L37-2(lines 37 40) the Hoare annotation is: (and (= main_~i0~0 0) (<= main_~n0~0 0) (= main_~i1~0 0)) [2022-03-20 08:24:01,686 INFO L882 garLoopResultBuilder]: For program point L37-3(lines 37 40) no Hoare annotation was computed. [2022-03-20 08:24:01,687 INFO L878 garLoopResultBuilder]: At program point L42-2(lines 42 46) the Hoare annotation is: (and (= main_~i0~0 0) (<= main_~n0~0 0) (= main_~j1~0 0) (<= (+ main_~n1~0 main_~n0~0) 0) (= main_~i1~0 0)) [2022-03-20 08:24:01,687 INFO L878 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: false [2022-03-20 08:24:01,687 INFO L882 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2022-03-20 08:24:01,687 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-20 08:24:01,687 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-20 08:24:01,687 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-20 08:24:01,687 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-20 08:24:01,688 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-20 08:24:01,688 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-20 08:24:01,696 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 08:24:01,697 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:24:01,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:24:01 BasicIcfg [2022-03-20 08:24:01,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:24:01,716 INFO L158 Benchmark]: Toolchain (without parser) took 1818.45ms. Allocated memory was 180.4MB in the beginning and 285.2MB in the end (delta: 104.9MB). Free memory was 122.8MB in the beginning and 187.7MB in the end (delta: -65.0MB). Peak memory consumption was 39.7MB. Max. memory is 8.0GB. [2022-03-20 08:24:01,716 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 180.4MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:24:01,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.88ms. Allocated memory was 180.4MB in the beginning and 285.2MB in the end (delta: 104.9MB). Free memory was 122.6MB in the beginning and 255.9MB in the end (delta: -133.3MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-03-20 08:24:01,721 INFO L158 Benchmark]: Boogie Preprocessor took 25.59ms. Allocated memory is still 285.2MB. Free memory was 255.9MB in the beginning and 254.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 08:24:01,722 INFO L158 Benchmark]: RCFGBuilder took 260.64ms. Allocated memory is still 285.2MB. Free memory was 254.3MB in the beginning and 243.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 08:24:01,722 INFO L158 Benchmark]: IcfgTransformer took 619.38ms. Allocated memory is still 285.2MB. Free memory was 243.3MB in the beginning and 225.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-03-20 08:24:01,722 INFO L158 Benchmark]: TraceAbstraction took 685.78ms. Allocated memory is still 285.2MB. Free memory was 224.5MB in the beginning and 187.7MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-03-20 08:24:01,724 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 180.4MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.88ms. Allocated memory was 180.4MB in the beginning and 285.2MB in the end (delta: 104.9MB). Free memory was 122.6MB in the beginning and 255.9MB in the end (delta: -133.3MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.59ms. Allocated memory is still 285.2MB. Free memory was 255.9MB in the beginning and 254.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 260.64ms. Allocated memory is still 285.2MB. Free memory was 254.3MB in the beginning and 243.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 619.38ms. Allocated memory is still 285.2MB. Free memory was 243.3MB in the beginning and 225.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 685.78ms. Allocated memory is still 285.2MB. Free memory was 224.5MB in the beginning and 187.7MB in the end (delta: 36.8MB). Peak memory consumption was 36.7MB. 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: 19]: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 36 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 43 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 70 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: i0 == 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (i0 == 0 && n0 <= 0) && i1 == 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((i0 == 0 && n0 <= 0) && j1 == 0) && n1 + n0 <= 0) && i1 == 0 RESULT: Ultimate proved your program to be correct! [2022-03-20 08:24:01,768 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...