/usr/bin/java -ea -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/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 10:51:25,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 10:51:25,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 10:51:25,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-27 10:51:25,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 10:51:25,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 10:51:25,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 10:51:25,175 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 [2022-04-27 10:51:25,191 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 10:51:25,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 10:51:25,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 10:51:25,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 10:51:25,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 10:51:25,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 10:51:25,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 10:51:25,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 10:51:25,193 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 10:51:25,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 10:51:25,194 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 10:51:25,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 10:51:25,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 10:51:25,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 10:51:25,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 10:51:25,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 10:51:25,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 10:51:25,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 10:51:25,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 10:51:25,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 10:51:25,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 10:51:25,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 10:51:25,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 10:51:25,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 10:51:25,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 10:51:25,442 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 10:51:25,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2022-04-27 10:51:25,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3f67c54/2f97f8925a6146dc9549b1f7cc4ee4a0/FLAG591c7f908 [2022-04-27 10:51:25,884 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 10:51:25,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2022-04-27 10:51:25,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3f67c54/2f97f8925a6146dc9549b1f7cc4ee4a0/FLAG591c7f908 [2022-04-27 10:51:25,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3f67c54/2f97f8925a6146dc9549b1f7cc4ee4a0 [2022-04-27 10:51:25,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 10:51:25,906 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 10:51:25,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 10:51:25,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 10:51:25,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 10:51:25,914 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 10:51:25" (1/1) ... [2022-04-27 10:51:25,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec5cd75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:25, skipping insertion in model container [2022-04-27 10:51:25,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 10:51:25" (1/1) ... [2022-04-27 10:51:25,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 10:51:25,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 10:51:26,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i[895,908] [2022-04-27 10:51:26,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 10:51:26,141 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 10:51:26,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i[895,908] [2022-04-27 10:51:26,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 10:51:26,167 INFO L208 MainTranslator]: Completed translation [2022-04-27 10:51:26,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26 WrapperNode [2022-04-27 10:51:26,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 10:51:26,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 10:51:26,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 10:51:26,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 10:51:26,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 10:51:26,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 10:51:26,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 10:51:26,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 10:51:26,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (1/1) ... [2022-04-27 10:51:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 10:51:26,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 10:51:26,225 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) [2022-04-27 10:51:26,240 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 [2022-04-27 10:51:26,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 10:51:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 10:51:26,259 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 10:51:26,260 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 10:51:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 10:51:26,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 10:51:26,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 10:51:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 10:51:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-27 10:51:26,263 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-27 10:51:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 10:51:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 10:51:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 10:51:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 10:51:26,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 10:51:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 10:51:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 10:51:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 10:51:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 10:51:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 10:51:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 10:51:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 10:51:26,336 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 10:51:26,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 10:51:26,488 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 10:51:26,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 10:51:26,494 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 10:51:26,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 10:51:26 BoogieIcfgContainer [2022-04-27 10:51:26,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 10:51:26,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 10:51:26,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 10:51:26,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 10:51:26,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 10:51:25" (1/3) ... [2022-04-27 10:51:26,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bd101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 10:51:26, skipping insertion in model container [2022-04-27 10:51:26,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 10:51:26" (2/3) ... [2022-04-27 10:51:26,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bd101c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 10:51:26, skipping insertion in model container [2022-04-27 10:51:26,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 10:51:26" (3/3) ... [2022-04-27 10:51:26,509 INFO L111 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2022-04-27 10:51:26,520 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 10:51:26,520 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 10:51:26,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 10:51:26,562 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42c4934b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1061b3f0 [2022-04-27 10:51:26,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 10:51:26,569 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 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) [2022-04-27 10:51:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-27 10:51:26,575 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 10:51:26,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 10:51:26,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 10:51:26,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 10:51:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash 179110084, now seen corresponding path program 1 times [2022-04-27 10:51:26,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 10:51:26,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735269889] [2022-04-27 10:51:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 10:51:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 10:51:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 10:51:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 10:51:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 10:51:26,747 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {28#true} is VALID [2022-04-27 10:51:26,748 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-27 10:51:26,748 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #74#return; {28#true} is VALID [2022-04-27 10:51:26,750 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 10:51:26,750 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); {28#true} is VALID [2022-04-27 10:51:26,751 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-27 10:51:26,751 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #74#return; {28#true} is VALID [2022-04-27 10:51:26,752 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret4 := main(); {28#true} is VALID [2022-04-27 10:51:26,752 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} havoc ~x~0;havoc ~y~0;havoc ~z~0;havoc ~w~0;~w~0 := 0;~z~0 := ~w~0;~y~0 := ~z~0;~x~0 := ~y~0; {28#true} is VALID [2022-04-27 10:51:26,754 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} assume !true; {29#false} is VALID [2022-04-27 10:51:26,754 INFO L272 TraceCheckUtils]: 7: Hoare triple {29#false} call __VERIFIER_assert((if ~x~0 >= 4 && ~y~0 <= 2 then 1 else 0)); {29#false} is VALID [2022-04-27 10:51:26,754 INFO L290 TraceCheckUtils]: 8: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2022-04-27 10:51:26,754 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2022-04-27 10:51:26,755 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} assume !false; {29#false} is VALID [2022-04-27 10:51:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 10:51:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 10:51:26,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735269889] [2022-04-27 10:51:26,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735269889] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 10:51:26,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 10:51:26,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 10:51:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123147991] [2022-04-27 10:51:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 10:51:26,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-27 10:51:26,767 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 10:51:26,769 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:26,799 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 10:51:26,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 10:51:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 10:51:26,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 10:51:26,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 10:51:26,824 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:26,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 10:51:26,925 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-04-27 10:51:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 10:51:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-27 10:51:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 10:51:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-04-27 10:51:26,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-04-27 10:51:26,944 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 44 transitions. [2022-04-27 10:51:27,007 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 10:51:27,016 INFO L225 Difference]: With dead ends: 37 [2022-04-27 10:51:27,016 INFO L226 Difference]: Without dead ends: 18 [2022-04-27 10:51:27,019 INFO L412 NwaCegarLoop]: 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 [2022-04-27 10:51:27,023 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 10:51:27,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 10:51:27,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-27 10:51:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-04-27 10:51:27,054 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 10:51:27,055 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:27,056 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:27,056 INFO L87 Difference]: Start difference. First operand 18 states. Second operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 10:51:27,060 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-04-27 10:51:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-04-27 10:51:27,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 10:51:27,060 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 10:51:27,061 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-27 10:51:27,062 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 18 states. [2022-04-27 10:51:27,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 10:51:27,070 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2022-04-27 10:51:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-04-27 10:51:27,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 10:51:27,071 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 10:51:27,071 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 10:51:27,071 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 10:51:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-04-27 10:51:27,075 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2022-04-27 10:51:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 10:51:27,076 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-04-27 10:51:27,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 10:51:27,079 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-04-27 10:51:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 10:51:27,085 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 10:51:27,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 10:51:27,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 10:51:27,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 10:51:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 10:51:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash 354566591, now seen corresponding path program 1 times [2022-04-27 10:51:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 10:51:27,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279583535] [2022-04-27 10:51:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 10:51:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 10:51:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 10:51:27,121 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 10:51:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 10:51:27,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 10:51:27,174 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 10:51:27,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 10:51:27,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-27 10:51:27,180 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-27 10:51:27,183 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: L12-1 has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 10:51:27,207 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L27-3 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L27-4 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L27-4 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 10:51:27,208 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L36-2 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2022-04-27 10:51:27,209 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2022-04-27 10:51:27,210 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 10:51:27,210 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-27 10:51:27,210 WARN L170 areAnnotationChecker]: L32 has no Hoare annotation [2022-04-27 10:51:27,210 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2022-04-27 10:51:27,210 WARN L170 areAnnotationChecker]: L36 has no Hoare annotation [2022-04-27 10:51:27,210 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-27 10:51:27,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 10:51:27 BoogieIcfgContainer [2022-04-27 10:51:27,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 10:51:27,213 INFO L158 Benchmark]: Toolchain (without parser) took 1306.33ms. Allocated memory is still 184.5MB. Free memory was 128.5MB in the beginning and 103.0MB in the end (delta: 25.5MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2022-04-27 10:51:27,213 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory was 145.3MB in the beginning and 145.2MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 10:51:27,214 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.04ms. Allocated memory is still 184.5MB. Free memory was 128.2MB in the beginning and 153.7MB in the end (delta: -25.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 10:51:27,217 INFO L158 Benchmark]: Boogie Preprocessor took 26.39ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 152.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 10:51:27,219 INFO L158 Benchmark]: RCFGBuilder took 300.87ms. Allocated memory is still 184.5MB. Free memory was 152.2MB in the beginning and 140.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 10:51:27,219 INFO L158 Benchmark]: TraceAbstraction took 713.76ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 103.0MB in the end (delta: 37.1MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-04-27 10:51:27,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory was 145.3MB in the beginning and 145.2MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 260.04ms. Allocated memory is still 184.5MB. Free memory was 128.2MB in the beginning and 153.7MB in the end (delta: -25.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.39ms. Allocated memory is still 184.5MB. Free memory was 153.7MB in the beginning and 152.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 300.87ms. Allocated memory is still 184.5MB. Free memory was 152.2MB in the beginning and 140.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 713.76ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 103.0MB in the end (delta: 37.1MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int x,y,z,w; [L26] EXPR w = 0 [L26] EXPR z = w = 0 [L26] EXPR y = z = w = 0 [L26] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L27] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L42] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 28 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-27 10:51:27,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...