/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-simple/nested_1b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 09:04:39,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 09:04:39,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 09:04:39,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 09:04:39,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 09:04:39,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 09:04:39,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 09:04:39,319 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 09:04:39,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 09:04:39,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 09:04:39,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 09:04:39,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 09:04:39,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 09:04:39,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 09:04:39,342 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 09:04:39,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 09:04:39,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 09:04:39,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 09:04:39,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 09:04:39,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 09:04:39,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 09:04:39,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 09:04:39,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 09:04:39,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 09:04:39,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 09:04:39,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 09:04:39,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 09:04:39,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 09:04:39,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 09:04:39,346 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 09:04:39,346 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 09:04:39,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 09:04:39,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 09:04:39,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 09:04:39,554 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 09:04:39,555 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 09:04:39,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_1b.c [2022-03-20 09:04:39,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea7ecec5/a208f088d3d847fc94c38c79dde5e522/FLAG11b06d4a9 [2022-03-20 09:04:39,939 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 09:04:39,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_1b.c [2022-03-20 09:04:39,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea7ecec5/a208f088d3d847fc94c38c79dde5e522/FLAG11b06d4a9 [2022-03-20 09:04:39,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ea7ecec5/a208f088d3d847fc94c38c79dde5e522 [2022-03-20 09:04:39,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 09:04:39,954 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 09:04:39,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 09:04:39,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 09:04:39,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 09:04:39,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:04:39" (1/1) ... [2022-03-20 09:04:39,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23151284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:39, skipping insertion in model container [2022-03-20 09:04:39,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:04:39" (1/1) ... [2022-03-20 09:04:39,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 09:04:39,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 09:04:40,097 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-simple/nested_1b.c[674,687] [2022-03-20 09:04:40,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 09:04:40,108 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 09:04:40,117 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-simple/nested_1b.c[674,687] [2022-03-20 09:04:40,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 09:04:40,125 INFO L208 MainTranslator]: Completed translation [2022-03-20 09:04:40,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40 WrapperNode [2022-03-20 09:04:40,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 09:04:40,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 09:04:40,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 09:04:40,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 09:04:40,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 09:04:40,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 09:04:40,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 09:04:40,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 09:04:40,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 09:04:40,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 09:04:40,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 09:04:40,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 09:04:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 09:04:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 09:04:40,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 09:04:40,217 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 09:04:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 09:04:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 09:04:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 09:04:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 09:04:40,260 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 09:04:40,261 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 09:04:40,309 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 09:04:40,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 09:04:40,313 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 09:04:40,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:04:40 BoogieIcfgContainer [2022-03-20 09:04:40,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 09:04:40,315 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 09:04:40,315 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 09:04:40,316 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 09:04:40,318 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:04:40" (1/1) ... [2022-03-20 09:04:40,324 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 09:04:40,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:04:40 BasicIcfg [2022-03-20 09:04:40,334 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 09:04:40,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 09:04:40,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 09:04:40,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 09:04:40,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 09:04:39" (1/4) ... [2022-03-20 09:04:40,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76145ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:04:40, skipping insertion in model container [2022-03-20 09:04:40,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:04:40" (2/4) ... [2022-03-20 09:04:40,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76145ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:04:40, skipping insertion in model container [2022-03-20 09:04:40,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:04:40" (3/4) ... [2022-03-20 09:04:40,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76145ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:04:40, skipping insertion in model container [2022-03-20 09:04:40,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:04:40" (4/4) ... [2022-03-20 09:04:40,356 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1b.cqvasr [2022-03-20 09:04:40,359 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 09:04:40,359 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 09:04:40,391 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 09:04:40,395 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 09:04:40,396 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 09:04:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 09:04:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-20 09:04:40,411 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:04:40,412 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:04:40,412 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:04:40,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:04:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash -633459621, now seen corresponding path program 1 times [2022-03-20 09:04:40,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:04:40,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061563838] [2022-03-20 09:04:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:04:40,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:04:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 09:04:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 09:04:40,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061563838] [2022-03-20 09:04:40,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061563838] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 09:04:40,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 09:04:40,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 09:04:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420477971] [2022-03-20 09:04:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 09:04:40,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 09:04:40,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 09:04:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 09:04:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 09:04:40,568 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 09:04:40,585 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-03-20 09:04:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 09:04:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-20 09:04:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 09:04:40,590 INFO L225 Difference]: With dead ends: 24 [2022-03-20 09:04:40,591 INFO L226 Difference]: Without dead ends: 11 [2022-03-20 09:04:40,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 09:04:40,597 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 09:04:40,598 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 09:04:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-03-20 09:04:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-03-20 09:04:40,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-03-20 09:04:40,619 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2022-03-20 09:04:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 09:04:40,620 INFO L478 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-03-20 09:04:40,620 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-03-20 09:04:40,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-20 09:04:40,620 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:04:40,620 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:04:40,621 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 09:04:40,621 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:04:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:04:40,621 INFO L85 PathProgramCache]: Analyzing trace with hash -633458660, now seen corresponding path program 1 times [2022-03-20 09:04:40,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:04:40,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32702600] [2022-03-20 09:04:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:04:40,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:04:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 09:04:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:40,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 09:04:40,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32702600] [2022-03-20 09:04:40,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32702600] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 09:04:40,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 09:04:40,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 09:04:40,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808903345] [2022-03-20 09:04:40,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 09:04:40,671 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 09:04:40,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 09:04:40,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 09:04:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 09:04:40,672 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 09:04:40,695 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-03-20 09:04:40,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 09:04:40,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-20 09:04:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 09:04:40,696 INFO L225 Difference]: With dead ends: 16 [2022-03-20 09:04:40,696 INFO L226 Difference]: Without dead ends: 13 [2022-03-20 09:04:40,696 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 09:04:40,697 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 09:04:40,698 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 09:04:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-20 09:04:40,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-03-20 09:04:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 09:04:40,701 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-03-20 09:04:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 09:04:40,701 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 09:04:40,701 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 09:04:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 09:04:40,705 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:04:40,706 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:04:40,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 09:04:40,706 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:04:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:04:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1132563481, now seen corresponding path program 1 times [2022-03-20 09:04:40,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:04:40,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121049486] [2022-03-20 09:04:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:04:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:04:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 09:04:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:40,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 09:04:40,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121049486] [2022-03-20 09:04:40,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121049486] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 09:04:40,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414903165] [2022-03-20 09:04:40,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:04:40,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 09:04:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 09:04:40,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 09:04:40,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 09:04:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-20 09:04:40,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 09:04:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:40,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 09:04:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:40,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414903165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 09:04:40,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 09:04:40,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-20 09:04:40,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633989288] [2022-03-20 09:04:40,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 09:04:40,901 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 09:04:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 09:04:40,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 09:04:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-20 09:04:40,902 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 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) [2022-03-20 09:04:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 09:04:40,973 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-03-20 09:04:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 09:04:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 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 11 [2022-03-20 09:04:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 09:04:40,974 INFO L225 Difference]: With dead ends: 21 [2022-03-20 09:04:40,975 INFO L226 Difference]: Without dead ends: 18 [2022-03-20 09:04:40,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2022-03-20 09:04:40,978 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 09:04:40,980 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 21 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 09:04:40,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-20 09:04:40,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-20 09:04:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-03-20 09:04:40,989 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2022-03-20 09:04:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 09:04:40,989 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-03-20 09:04:40,990 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 1 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) [2022-03-20 09:04:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-03-20 09:04:40,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 09:04:40,990 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:04:40,990 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:04:41,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 09:04:41,200 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 09:04:41,201 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:04:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:04:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash -754672496, now seen corresponding path program 2 times [2022-03-20 09:04:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:04:41,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105319200] [2022-03-20 09:04:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:04:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:04:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 09:04:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:04:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:41,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 09:04:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105319200] [2022-03-20 09:04:41,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105319200] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 09:04:41,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907010856] [2022-03-20 09:04:41,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 09:04:41,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 09:04:41,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 09:04:41,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 09:04:41,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 09:04:41,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 09:04:41,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 09:04:41,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 09:04:41,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 09:04:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:41,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 09:04:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 09:04:41,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907010856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 09:04:41,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 09:04:41,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2022-03-20 09:04:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206399071] [2022-03-20 09:04:41,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 09:04:41,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 09:04:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 09:04:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 09:04:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-03-20 09:04:41,405 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 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) [2022-03-20 09:04:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 09:04:41,508 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-03-20 09:04:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 09:04:41,509 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 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 [2022-03-20 09:04:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 09:04:41,510 INFO L225 Difference]: With dead ends: 25 [2022-03-20 09:04:41,510 INFO L226 Difference]: Without dead ends: 22 [2022-03-20 09:04:41,510 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-03-20 09:04:41,512 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 09:04:41,514 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 09:04:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-20 09:04:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-20 09:04:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:04:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-03-20 09:04:41,517 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2022-03-20 09:04:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 09:04:41,517 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-03-20 09:04:41,517 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 1 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) [2022-03-20 09:04:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-03-20 09:04:41,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-20 09:04:41,517 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:04:41,517 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:04:41,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 09:04:41,723 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-03-20 09:04:41,724 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:04:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:04:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2022641846, now seen corresponding path program 3 times [2022-03-20 09:04:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:04:41,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113910034] [2022-03-20 09:04:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:04:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:04:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 09:04:41,735 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 09:04:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 09:04:41,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 09:04:41,759 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 09:04:41,760 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 09:04:41,761 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 09:04:41,766 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-03-20 09:04:41,768 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 09:04:41,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:04:41 BasicIcfg [2022-03-20 09:04:41,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 09:04:41,780 INFO L158 Benchmark]: Toolchain (without parser) took 1825.54ms. Allocated memory was 190.8MB in the beginning and 248.5MB in the end (delta: 57.7MB). Free memory was 131.8MB in the beginning and 212.1MB in the end (delta: -80.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 09:04:41,780 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 09:04:41,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.23ms. Allocated memory was 190.8MB in the beginning and 248.5MB in the end (delta: 57.7MB). Free memory was 131.6MB in the beginning and 219.6MB in the end (delta: -87.9MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. [2022-03-20 09:04:41,780 INFO L158 Benchmark]: Boogie Preprocessor took 15.47ms. Allocated memory is still 248.5MB. Free memory was 219.6MB in the beginning and 218.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 09:04:41,781 INFO L158 Benchmark]: RCFGBuilder took 172.84ms. Allocated memory is still 248.5MB. Free memory was 218.1MB in the beginning and 209.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-20 09:04:41,781 INFO L158 Benchmark]: IcfgTransformer took 18.55ms. Allocated memory is still 248.5MB. Free memory was 209.1MB in the beginning and 208.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 09:04:41,781 INFO L158 Benchmark]: TraceAbstraction took 1444.61ms. Allocated memory is still 248.5MB. Free memory was 207.2MB in the beginning and 212.1MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 09:04:41,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 190.8MB. Free memory is still 147.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 168.23ms. Allocated memory was 190.8MB in the beginning and 248.5MB in the end (delta: 57.7MB). Free memory was 131.6MB in the beginning and 219.6MB in the end (delta: -87.9MB). Peak memory consumption was 7.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.47ms. Allocated memory is still 248.5MB. Free memory was 219.6MB in the beginning and 218.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 172.84ms. Allocated memory is still 248.5MB. Free memory was 218.1MB in the beginning and 209.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * IcfgTransformer took 18.55ms. Allocated memory is still 248.5MB. Free memory was 209.1MB in the beginning and 208.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1444.61ms. Allocated memory is still 248.5MB. Free memory was 207.2MB in the beginning and 212.1MB in the end (delta: -5.0MB). 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: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 VAL [a=0] [L19] COND TRUE a < 6 VAL [a=0] [L19] ++a VAL [a=1] [L19] COND TRUE a < 6 VAL [a=1] [L19] ++a VAL [a=2] [L19] COND TRUE a < 6 VAL [a=2] [L19] ++a VAL [a=3] [L19] COND TRUE a < 6 VAL [a=3] [L19] ++a VAL [a=4] [L19] COND TRUE a < 6 VAL [a=4] [L19] ++a VAL [a=5] [L19] COND TRUE a < 6 VAL [a=5] [L19] ++a VAL [a=6] [L19] COND FALSE !(a < 6) VAL [a=6] [L22] COND TRUE a == 6 VAL [a=6] [L23] reach_error() VAL [a=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 43 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-20 09:04:41,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...