/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/matrix-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 21:59:59,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 21:59:59,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 21:59:59,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 21:59:59,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 21:59:59,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 21:59:59,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 21:59:59,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 21:59:59,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 21:59:59,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 21:59:59,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 21:59:59,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 21:59:59,248 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 21:59:59,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 21:59:59,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 21:59:59,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 21:59:59,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 21:59:59,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 21:59:59,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-19 21:59:59,288 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 21:59:59,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 21:59:59,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 21:59:59,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 21:59:59,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 21:59:59,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 21:59:59,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 21:59:59,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 21:59:59,290 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 21:59:59,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 21:59:59,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 21:59:59,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 21:59:59,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 21:59:59,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 21:59:59,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 21:59:59,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 21:59:59,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 21:59:59,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 21:59:59,294 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 21:59:59,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 21:59:59,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 21:59:59,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 21:59:59,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 21:59:59,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 21:59:59,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 21:59:59,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 21:59:59,512 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 21:59:59,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-2.c [2022-03-19 21:59:59,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff132d1f6/f148481c58454f03be23225aab5de952/FLAG80df046a8 [2022-03-19 21:59:59,925 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 21:59:59,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c [2022-03-19 21:59:59,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff132d1f6/f148481c58454f03be23225aab5de952/FLAG80df046a8 [2022-03-19 21:59:59,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff132d1f6/f148481c58454f03be23225aab5de952 [2022-03-19 21:59:59,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 21:59:59,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 21:59:59,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 21:59:59,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 21:59:59,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 21:59:59,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:59:59" (1/1) ... [2022-03-19 21:59:59,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2f810f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 09:59:59, skipping insertion in model container [2022-03-19 21:59:59,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 09:59:59" (1/1) ... [2022-03-19 21:59:59,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 21:59:59,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 22:00:00,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c[320,333] [2022-03-19 22:00:00,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:00:00,135 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 22:00:00,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-2.c[320,333] [2022-03-19 22:00:00,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 22:00:00,166 INFO L208 MainTranslator]: Completed translation [2022-03-19 22:00:00,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00 WrapperNode [2022-03-19 22:00:00,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 22:00:00,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 22:00:00,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 22:00:00,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 22:00:00,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 22:00:00,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 22:00:00,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 22:00:00,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 22:00:00,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (1/1) ... [2022-03-19 22:00:00,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 22:00:00,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:00:00,248 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) [2022-03-19 22:00:00,282 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 [2022-03-19 22:00:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 22:00:00,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 22:00:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 22:00:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 22:00:00,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-19 22:00:00,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 22:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 22:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 22:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 22:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 22:00:00,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 22:00:00,364 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 22:00:00,365 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 22:00:00,495 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 22:00:00,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 22:00:00,498 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-19 22:00:00,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:00:00 BoogieIcfgContainer [2022-03-19 22:00:00,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 22:00:00,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 22:00:00,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 22:00:00,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 22:00:00,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 09:59:59" (1/3) ... [2022-03-19 22:00:00,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1019669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:00:00, skipping insertion in model container [2022-03-19 22:00:00,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 10:00:00" (2/3) ... [2022-03-19 22:00:00,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1019669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 10:00:00, skipping insertion in model container [2022-03-19 22:00:00,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 10:00:00" (3/3) ... [2022-03-19 22:00:00,513 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2022-03-19 22:00:00,516 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 22:00:00,516 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 22:00:00,551 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 22:00:00,555 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=PETRI_NET, 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 [2022-03-19 22:00:00,555 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 22:00:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 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) [2022-03-19 22:00:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 22:00:00,566 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:00:00,566 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:00:00,567 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:00:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:00:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash -691068696, now seen corresponding path program 1 times [2022-03-19 22:00:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:00:00,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424548284] [2022-03-19 22:00:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:00:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:00:00,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 22:00:00,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117162805] [2022-03-19 22:00:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:00:00,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:00:00,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:00:00,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:00:00,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 22:00:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:00:00,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-19 22:00:00,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:00:00,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:00:00,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 22:00:00,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:00:00,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424548284] [2022-03-19 22:00:00,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 22:00:00,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117162805] [2022-03-19 22:00:00,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117162805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:00:00,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:00:00,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 22:00:00,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678519986] [2022-03-19 22:00:00,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:00:00,858 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 22:00:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:00:00,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 22:00:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 22:00:00,896 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 22 states have internal predecessors, (32), 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 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:00:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:00:00,979 INFO L93 Difference]: Finished difference Result 68 states and 100 transitions. [2022-03-19 22:00:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 22:00:00,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-19 22:00:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:00:00,985 INFO L225 Difference]: With dead ends: 68 [2022-03-19 22:00:00,985 INFO L226 Difference]: Without dead ends: 35 [2022-03-19 22:00:00,987 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 22:00:00,989 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 22:00:00,990 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 93 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 22:00:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-19 22:00:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2022-03-19 22:00:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-03-19 22:00:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-03-19 22:00:01,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2022-03-19 22:00:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:00:01,051 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-03-19 22:00:01,051 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:00:01,052 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-03-19 22:00:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-19 22:00:01,052 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:00:01,052 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:00:01,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 22:00:01,272 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-19 22:00:01,273 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:00:01,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:00:01,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1002836895, now seen corresponding path program 1 times [2022-03-19 22:00:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:00:01,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969979432] [2022-03-19 22:00:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:00:01,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:00:01,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 22:00:01,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1246222471] [2022-03-19 22:00:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:00:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:00:01,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:00:01,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:00:01,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 22:00:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 22:00:01,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-19 22:00:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 22:00:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 22:00:01,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 22:00:01,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 22:00:01,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969979432] [2022-03-19 22:00:01,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 22:00:01,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246222471] [2022-03-19 22:00:01,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246222471] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 22:00:01,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 22:00:01,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 22:00:01,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910232967] [2022-03-19 22:00:01,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 22:00:01,444 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 22:00:01,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 22:00:01,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 22:00:01,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 22:00:01,445 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:00:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 22:00:01,484 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-03-19 22:00:01,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 22:00:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 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 [2022-03-19 22:00:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 22:00:01,489 INFO L225 Difference]: With dead ends: 57 [2022-03-19 22:00:01,489 INFO L226 Difference]: Without dead ends: 32 [2022-03-19 22:00:01,489 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 22:00:01,490 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 22:00:01,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 22:00:01,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-19 22:00:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2022-03-19 22:00:01,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-03-19 22:00:01,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-03-19 22:00:01,496 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2022-03-19 22:00:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 22:00:01,496 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-03-19 22:00:01,497 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 22:00:01,497 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-03-19 22:00:01,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-19 22:00:01,497 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 22:00:01,497 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 22:00:01,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 22:00:01,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-03-19 22:00:01,698 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 22:00:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 22:00:01,699 INFO L85 PathProgramCache]: Analyzing trace with hash -230396703, now seen corresponding path program 1 times [2022-03-19 22:00:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 22:00:01,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097626047] [2022-03-19 22:00:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:00:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 22:00:01,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 22:00:01,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260462440] [2022-03-19 22:00:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 22:00:01,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:00:01,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 22:00:01,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 22:00:01,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 22:00:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 22:00:01,814 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 22:00:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 22:00:01,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 22:00:01,853 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-19 22:00:01,853 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 22:00:01,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 22:00:02,065 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 22:00:02,069 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-19 22:00:02,071 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 22:00:02,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 10:00:02 BoogieIcfgContainer [2022-03-19 22:00:02,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 22:00:02,097 INFO L158 Benchmark]: Toolchain (without parser) took 2151.02ms. Allocated memory was 215.0MB in the beginning and 316.7MB in the end (delta: 101.7MB). Free memory was 160.9MB in the beginning and 283.8MB in the end (delta: -122.9MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 22:00:02,097 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 215.0MB. Free memory was 177.0MB in the beginning and 176.9MB in the end (delta: 74.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 22:00:02,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.37ms. Allocated memory is still 215.0MB. Free memory was 160.7MB in the beginning and 186.1MB in the end (delta: -25.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-03-19 22:00:02,098 INFO L158 Benchmark]: Boogie Preprocessor took 32.67ms. Allocated memory is still 215.0MB. Free memory was 186.1MB in the beginning and 184.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-19 22:00:02,098 INFO L158 Benchmark]: RCFGBuilder took 298.79ms. Allocated memory is still 215.0MB. Free memory was 184.3MB in the beginning and 172.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 22:00:02,099 INFO L158 Benchmark]: TraceAbstraction took 1596.20ms. Allocated memory was 215.0MB in the beginning and 316.7MB in the end (delta: 101.7MB). Free memory was 172.3MB in the beginning and 283.8MB in the end (delta: -111.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 22:00:02,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 215.0MB. Free memory was 177.0MB in the beginning and 176.9MB in the end (delta: 74.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.37ms. Allocated memory is still 215.0MB. Free memory was 160.7MB in the beginning and 186.1MB in the end (delta: -25.3MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 32.67ms. Allocated memory is still 215.0MB. Free memory was 186.1MB in the beginning and 184.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 298.79ms. Allocated memory is still 215.0MB. Free memory was 184.3MB in the beginning and 172.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1596.20ms. Allocated memory was 215.0MB in the beginning and 316.7MB in the end (delta: 101.7MB). Free memory was 172.3MB in the beginning and 283.8MB in the end (delta: -111.4MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 VAL [j=0, maior=0, matriz={4:0}, N_COL=1, N_LIN=1] [L22] COND TRUE jmaior [L28] EXPR matriz[j][k] [L28] maior = matriz[j][k] [L23] k++ VAL [j=0, k=1, maior=1, matriz={4:0}, N_COL=1, N_LIN=1] [L23] COND FALSE !(k