/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:51:30,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:51:30,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:51:30,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 20:51:30,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:51:30,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:51:30,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:51:30,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:51:30,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:51:30,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:51:30,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:51:30,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:51:30,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:51:30,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:51:30,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:51:30,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:51:30,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:51:30,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:51:30,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:51:30,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:51:30,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:51:30,122 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:51:30,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:51:30,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:51:30,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:51:30,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:51:30,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:51:30,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:51:30,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:51:30,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:51:30,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:51:30,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:51:30,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:51:30,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:51:30,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:51:30,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:51:30,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:51:30,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:51:30,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:51:30,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:51:30,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:51:30,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:51:30,128 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:51:30,128 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:51:30,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:51:30,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:51:30,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:51:30,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:51:30,335 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:51:30,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2022-02-14 20:51:30,392 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f2bd633/78751eb995104943ade9f869edca4e4d/FLAGacf43b535 [2022-02-14 20:51:30,729 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:51:30,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2022-02-14 20:51:30,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f2bd633/78751eb995104943ade9f869edca4e4d/FLAGacf43b535 [2022-02-14 20:51:31,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f2bd633/78751eb995104943ade9f869edca4e4d [2022-02-14 20:51:31,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:51:31,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:51:31,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:51:31,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:51:31,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:51:31,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d98ed9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31, skipping insertion in model container [2022-02-14 20:51:31,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:51:31,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:51:31,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2022-02-14 20:51:31,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:51:31,357 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:51:31,365 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i[895,908] [2022-02-14 20:51:31,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:51:31,378 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:51:31,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31 WrapperNode [2022-02-14 20:51:31,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:51:31,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:51:31,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:51:31,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:51:31,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:51:31,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:51:31,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:51:31,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:51:31,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:51:31,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:51:31,431 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) [2022-02-14 20:51:31,444 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 [2022-02-14 20:51:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:51:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:51:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:51:31,479 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 20:51:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:51:31,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:51:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:51:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:51:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 20:51:31,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:51:31,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:51:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:51:31,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:51:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:51:31,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:51:31,532 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:51:31,533 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:51:31,605 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:51:31,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:51:31,610 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 20:51:31,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:51:31 BoogieIcfgContainer [2022-02-14 20:51:31,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:51:31,612 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:51:31,612 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:51:31,613 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:51:31,616 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:51:31" (1/1) ... [2022-02-14 20:51:31,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:51:31 BasicIcfg [2022-02-14 20:51:31,627 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:51:31,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:51:31,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:51:31,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:51:31,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:51:31" (1/4) ... [2022-02-14 20:51:31,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fcabe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:51:31, skipping insertion in model container [2022-02-14 20:51:31,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:51:31" (2/4) ... [2022-02-14 20:51:31,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fcabe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:51:31, skipping insertion in model container [2022-02-14 20:51:31,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:51:31" (3/4) ... [2022-02-14 20:51:31,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58fcabe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:51:31, skipping insertion in model container [2022-02-14 20:51:31,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:51:31" (4/4) ... [2022-02-14 20:51:31,633 INFO L111 eAbstractionObserver]: Analyzing ICFG css2003.iJordan [2022-02-14 20:51:31,636 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:51:31,636 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:51:31,682 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:51:31,693 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 20:51:31,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:51:31,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 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) [2022-02-14 20:51:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 20:51:31,721 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:51:31,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:51:31,721 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:51:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:51:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1293576316, now seen corresponding path program 1 times [2022-02-14 20:51:31,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:51:31,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906847875] [2022-02-14 20:51:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:51:31,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:51:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:51:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:51:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:51:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:51:32,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:51:32,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906847875] [2022-02-14 20:51:32,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906847875] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:51:32,028 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:51:32,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-14 20:51:32,029 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749215769] [2022-02-14 20:51:32,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:51:32,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-14 20:51:32,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:51:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-14 20:51:32,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-02-14 20:51:32,058 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 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 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-02-14 20:51:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:51:32,247 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-02-14 20:51:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-14 20:51:32,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 12 [2022-02-14 20:51:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:51:32,261 INFO L225 Difference]: With dead ends: 21 [2022-02-14 20:51:32,261 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 20:51:32,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-02-14 20:51:32,266 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 20:51:32,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 49 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 20:51:32,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 20:51:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 20:51:32,283 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) [2022-02-14 20:51:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 20:51:32,284 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-02-14 20:51:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:51:32,284 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 20:51:32,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-02-14 20:51:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 20:51:32,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 20:51:32,286 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 20:51:32,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:51:32,290 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-14 20:51:32,291 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 20:51:32,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:51:32 BasicIcfg [2022-02-14 20:51:32,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 20:51:32,294 INFO L158 Benchmark]: Toolchain (without parser) took 1127.40ms. Allocated memory is still 195.0MB. Free memory was 147.1MB in the beginning and 130.4MB in the end (delta: 16.7MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. [2022-02-14 20:51:32,295 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 195.0MB. Free memory was 163.6MB in the beginning and 163.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 20:51:32,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.94ms. Allocated memory is still 195.0MB. Free memory was 146.9MB in the beginning and 172.7MB in the end (delta: -25.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-14 20:51:32,303 INFO L158 Benchmark]: Boogie Preprocessor took 23.67ms. Allocated memory is still 195.0MB. Free memory was 172.7MB in the beginning and 171.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:51:32,303 INFO L158 Benchmark]: RCFGBuilder took 207.95ms. Allocated memory is still 195.0MB. Free memory was 171.2MB in the beginning and 161.6MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-14 20:51:32,304 INFO L158 Benchmark]: IcfgTransformer took 14.73ms. Allocated memory is still 195.0MB. Free memory was 161.6MB in the beginning and 160.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-14 20:51:32,304 INFO L158 Benchmark]: TraceAbstraction took 665.78ms. Allocated memory is still 195.0MB. Free memory was 159.7MB in the beginning and 130.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-02-14 20:51:32,306 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 195.0MB. Free memory was 163.6MB in the beginning and 163.4MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.94ms. Allocated memory is still 195.0MB. Free memory was 146.9MB in the beginning and 172.7MB in the end (delta: -25.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.67ms. Allocated memory is still 195.0MB. Free memory was 172.7MB in the beginning and 171.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.95ms. Allocated memory is still 195.0MB. Free memory was 171.2MB in the beginning and 161.6MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 14.73ms. Allocated memory is still 195.0MB. Free memory was 161.6MB in the beginning and 160.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 665.78ms. Allocated memory is still 195.0MB. Free memory was 159.7MB in the beginning and 130.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, 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, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 16 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-14 20:51:32,339 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...