/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 04:01:21,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 04:01:21,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 04:01:22,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 04:01:22,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 04:01:22,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 04:01:22,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 04:01:22,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 04:01:22,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 04:01:22,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 04:01:22,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 04:01:22,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 04:01:22,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 04:01:22,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 04:01:22,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 04:01:22,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 04:01:22,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 04:01:22,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 04:01:22,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 04:01:22,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 04:01:22,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 04:01:22,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 04:01:22,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 04:01:22,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 04:01:22,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-24 04:01:22,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-24 04:01:22,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-24 04:01:22,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-24 04:01:22,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-24 04:01:22,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-24 04:01:22,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-24 04:01:22,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-24 04:01:22,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-24 04:01:22,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-24 04:01:22,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-24 04:01:22,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-24 04:01:22,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-24 04:01:22,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-24 04:01:22,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 04:01:22,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 04:01:22,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 04:01:22,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-02-24 04:01:22,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 04:01:22,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 04:01:22,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 04:01:22,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 04:01:22,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 04:01:22,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 04:01:22,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 04:01:22,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 04:01:22,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 04:01:22,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 04:01:22,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:01:22,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-24 04:01:22,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 04:01:22,107 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-02-24 04:01:22,107 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 04:01:22,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 04:01:22,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 04:01:22,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 04:01:22,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 04:01:22,496 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 04:01:22,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2022-02-24 04:01:22,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbc9cfe7/e7b9e4ae77ff42508a655a6ee3ed3e31/FLAGa52fd24ab [2022-02-24 04:01:22,977 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 04:01:22,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark10_conjunctive.i [2022-02-24 04:01:22,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbc9cfe7/e7b9e4ae77ff42508a655a6ee3ed3e31/FLAGa52fd24ab [2022-02-24 04:01:22,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8cbc9cfe7/e7b9e4ae77ff42508a655a6ee3ed3e31 [2022-02-24 04:01:23,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 04:01:23,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-24 04:01:23,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 04:01:23,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 04:01:23,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 04:01:23,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f2e86f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23, skipping insertion in model container [2022-02-24 04:01:23,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 04:01:23,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 04:01:23,168 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-zilu/benchmark10_conjunctive.i[873,886] [2022-02-24 04:01:23,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:01:23,184 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 04:01:23,193 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-zilu/benchmark10_conjunctive.i[873,886] [2022-02-24 04:01:23,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 04:01:23,206 INFO L208 MainTranslator]: Completed translation [2022-02-24 04:01:23,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23 WrapperNode [2022-02-24 04:01:23,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 04:01:23,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 04:01:23,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 04:01:23,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 04:01:23,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 04:01:23,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 04:01:23,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 04:01:23,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 04:01:23,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (1/1) ... [2022-02-24 04:01:23,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 04:01:23,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 04:01:23,269 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) [2022-02-24 04:01:23,288 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 [2022-02-24 04:01:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 04:01:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 04:01:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 04:01:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 04:01:23,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 04:01:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 04:01:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-24 04:01:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-24 04:01:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 04:01:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 04:01:23,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-24 04:01:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-24 04:01:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 04:01:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 04:01:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 04:01:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 04:01:23,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 04:01:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 04:01:23,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 04:01:23,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 04:01:23,360 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 04:01:23,362 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 04:01:23,447 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 04:01:23,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 04:01:23,451 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 04:01:23,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:01:23 BoogieIcfgContainer [2022-02-24 04:01:23,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 04:01:23,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 04:01:23,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 04:01:23,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 04:01:23,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:01:23" (1/3) ... [2022-02-24 04:01:23,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41934c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:01:23, skipping insertion in model container [2022-02-24 04:01:23,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:01:23" (2/3) ... [2022-02-24 04:01:23,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41934c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:01:23, skipping insertion in model container [2022-02-24 04:01:23,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:01:23" (3/3) ... [2022-02-24 04:01:23,457 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark10_conjunctive.i [2022-02-24 04:01:23,461 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-24 04:01:23,461 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 04:01:23,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 04:01:23,496 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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=QVASR [2022-02-24 04:01:23,496 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 04:01:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-02-24 04:01:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-24 04:01:23,518 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:01:23,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:01:23,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:01:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:01:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2022-02-24 04:01:23,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:01:23,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734041181] [2022-02-24 04:01:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:01:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:01:23,581 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:01:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:01:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:01:23,744 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:01:23,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734041181] [2022-02-24 04:01:23,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1734041181] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:01:23,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:01:23,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-24 04:01:23,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647000014] [2022-02-24 04:01:23,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:01:23,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-24 04:01:23,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:01:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-24 04:01:23,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-24 04:01:23,779 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2022-02-24 04:01:23,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:01:23,849 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2022-02-24 04:01:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-24 04:01:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2022-02-24 04:01:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:01:23,856 INFO L225 Difference]: With dead ends: 38 [2022-02-24 04:01:23,856 INFO L226 Difference]: Without dead ends: 16 [2022-02-24 04:01:23,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:01:23,863 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:01:23,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 32 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 04:01:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-02-24 04:01:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-02-24 04:01:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-02-24 04:01:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-02-24 04:01:23,888 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-02-24 04:01:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:01:23,891 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-02-24 04:01:23,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2022-02-24 04:01:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-02-24 04:01:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-24 04:01:23,892 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:01:23,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:01:23,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 04:01:23,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:01:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:01:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2022-02-24 04:01:23,895 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:01:23,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761935141] [2022-02-24 04:01:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:01:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:01:23,900 INFO L213 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-24 04:01:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:23,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 04:01:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 04:01:23,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-24 04:01:23,959 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-24 04:01:23,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761935141] [2022-02-24 04:01:23,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1761935141] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 04:01:23,959 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 04:01:23,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 04:01:23,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177856166] [2022-02-24 04:01:23,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 04:01:23,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 04:01:23,960 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-24 04:01:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 04:01:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-24 04:01:23,961 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-02-24 04:01:24,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 04:01:24,008 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-02-24 04:01:24,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 04:01:24,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2022-02-24 04:01:24,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 04:01:24,011 INFO L225 Difference]: With dead ends: 20 [2022-02-24 04:01:24,011 INFO L226 Difference]: Without dead ends: 15 [2022-02-24 04:01:24,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-24 04:01:24,018 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 04:01:24,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 04:01:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-02-24 04:01:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-02-24 04:01:24,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-02-24 04:01:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-02-24 04:01:24,031 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-02-24 04:01:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 04:01:24,031 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-02-24 04:01:24,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-02-24 04:01:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-02-24 04:01:24,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-02-24 04:01:24,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 04:01:24,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 04:01:24,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-24 04:01:24,033 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 04:01:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 04:01:24,033 INFO L85 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2022-02-24 04:01:24,033 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-24 04:01:24,033 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007912687] [2022-02-24 04:01:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 04:01:24,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 04:01:24,421 INFO L275 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-24 04:01:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 04:01:24,433 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-24 04:01:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-24 04:01:24,476 INFO L138 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-02-24 04:01:24,477 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-24 04:01:24,479 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 04:01:24,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-24 04:01:24,488 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-24 04:01:24,490 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 04:01:24,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:01:24 BoogieIcfgContainer [2022-02-24 04:01:24,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 04:01:24,499 INFO L158 Benchmark]: Toolchain (without parser) took 1496.09ms. Allocated memory is still 177.2MB. Free memory was 126.0MB in the beginning and 94.1MB in the end (delta: 32.0MB). Peak memory consumption was 31.8MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,499 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 04:01:24,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.55ms. Allocated memory is still 177.2MB. Free memory was 125.9MB in the beginning and 151.2MB in the end (delta: -25.3MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,500 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 177.2MB. Free memory was 150.7MB in the beginning and 149.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,500 INFO L158 Benchmark]: RCFGBuilder took 214.92ms. Allocated memory is still 177.2MB. Free memory was 149.6MB in the beginning and 139.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,500 INFO L158 Benchmark]: TraceAbstraction took 1044.75ms. Allocated memory is still 177.2MB. Free memory was 139.2MB in the beginning and 94.1MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2022-02-24 04:01:24,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.55ms. Allocated memory is still 177.2MB. Free memory was 125.9MB in the beginning and 151.2MB in the end (delta: -25.3MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 177.2MB. Free memory was 150.7MB in the beginning and 149.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 214.92ms. Allocated memory is still 177.2MB. Free memory was 149.6MB in the beginning and 139.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1044.75ms. Allocated memory is still 177.2MB. Free memory was 139.2MB in the beginning and 94.1MB in the end (delta: 45.1MB). Peak memory consumption was 45.1MB. 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int c = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(c==0 && i==0)) [L23] COND TRUE i<100 [L24] c=c+i [L25] i=i+1 [L26] COND FALSE !(i<=0) [L23] COND FALSE !(i<100) [L28] CALL __VERIFIER_assert(c>=0) [L15] COND TRUE !cond [L16] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, 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, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 38 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 34 mSDtfsCounter, 38 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-02-24 04:01:24,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...