/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invariants/bin-suffix-5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 13:04:25,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 13:04:25,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 13:04:26,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 13:04:26,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 13:04:26,068 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 13:04:26,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 13:04:26,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 13:04:26,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 13:04:26,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 13:04:26,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 13:04:26,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 13:04:26,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 13:04:26,069 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 13:04:26,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 13:04:26,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 13:04:26,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 13:04:26,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 13:04:26,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 13:04:26,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 13:04:26,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 13:04:26,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 13:04:26,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 13:04:26,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 13:04:26,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 13:04:26,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 13:04:26,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 13:04:26,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 13:04:26,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 13:04:26,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 13:04:26,279 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 13:04:26,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/bin-suffix-5.c [2022-03-18 13:04:26,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16e521e1/729ef4f24bab49c7a06273038986978e/FLAG92a3f60cf [2022-03-18 13:04:26,677 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 13:04:26,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/bin-suffix-5.c [2022-03-18 13:04:26,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16e521e1/729ef4f24bab49c7a06273038986978e/FLAG92a3f60cf [2022-03-18 13:04:27,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16e521e1/729ef4f24bab49c7a06273038986978e [2022-03-18 13:04:27,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 13:04:27,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 13:04:27,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 13:04:27,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 13:04:27,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 13:04:27,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d220a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27, skipping insertion in model container [2022-03-18 13:04:27,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 13:04:27,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 13:04:27,269 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-invariants/bin-suffix-5.c[359,372] [2022-03-18 13:04:27,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 13:04:27,284 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 13:04:27,292 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-invariants/bin-suffix-5.c[359,372] [2022-03-18 13:04:27,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 13:04:27,302 INFO L208 MainTranslator]: Completed translation [2022-03-18 13:04:27,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27 WrapperNode [2022-03-18 13:04:27,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 13:04:27,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 13:04:27,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 13:04:27,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 13:04:27,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 13:04:27,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 13:04:27,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 13:04:27,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 13:04:27,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (1/1) ... [2022-03-18 13:04:27,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 13:04:27,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 13:04:27,353 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) [2022-03-18 13:04:27,357 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 [2022-03-18 13:04:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 13:04:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 13:04:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 13:04:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 13:04:27,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 13:04:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 13:04:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 13:04:27,424 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 13:04:27,425 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 13:04:27,486 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 13:04:27,490 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 13:04:27,490 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 13:04:27,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 01:04:27 BoogieIcfgContainer [2022-03-18 13:04:27,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 13:04:27,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 13:04:27,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 13:04:27,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 13:04:27,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 01:04:27" (1/3) ... [2022-03-18 13:04:27,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaa8373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 01:04:27, skipping insertion in model container [2022-03-18 13:04:27,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 01:04:27" (2/3) ... [2022-03-18 13:04:27,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaa8373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 01:04:27, skipping insertion in model container [2022-03-18 13:04:27,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 01:04:27" (3/3) ... [2022-03-18 13:04:27,509 INFO L111 eAbstractionObserver]: Analyzing ICFG bin-suffix-5.c [2022-03-18 13:04:27,513 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 13:04:27,513 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 13:04:27,557 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 13:04:27,580 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 13:04:27,580 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 13:04:27,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 13:04:27,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-18 13:04:27,594 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 13:04:27,595 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 13:04:27,595 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 13:04:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 13:04:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2022-03-18 13:04:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 13:04:27,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257492497] [2022-03-18 13:04:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 13:04:27,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 13:04:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:04:27,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 13:04:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 13:04:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 13:04:27,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 13:04:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257492497] [2022-03-18 13:04:27,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257492497] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 13:04:27,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 13:04:27,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 13:04:27,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190353580] [2022-03-18 13:04:27,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 13:04:27,728 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 13:04:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 13:04:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 13:04:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 13:04:27,751 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-03-18 13:04:27,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 13:04:27,788 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-03-18 13:04:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 13:04:27,790 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 [2022-03-18 13:04:27,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 13:04:27,794 INFO L225 Difference]: With dead ends: 32 [2022-03-18 13:04:27,794 INFO L226 Difference]: Without dead ends: 13 [2022-03-18 13:04:27,796 INFO L911 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 [2022-03-18 13:04:27,798 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 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 [2022-03-18 13:04:27,799 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 13:04:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-18 13:04:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-18 13:04:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2022-03-18 13:04:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-18 13:04:27,826 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-18 13:04:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 13:04:27,827 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-18 13:04:27,827 INFO L479 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) [2022-03-18 13:04:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-18 13:04:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 13:04:27,827 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 13:04:27,827 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 13:04:27,828 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 13:04:27,828 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 13:04:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 13:04:27,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2022-03-18 13:04:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 13:04:27,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117440795] [2022-03-18 13:04:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 13:04:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 13:04:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 13:04:27,848 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 13:04:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 13:04:27,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 13:04:27,869 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 13:04:27,870 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 13:04:27,871 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 13:04:27,874 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-18 13:04:27,876 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 13:04:27,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 01:04:27 BoogieIcfgContainer [2022-03-18 13:04:27,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 13:04:27,887 INFO L158 Benchmark]: Toolchain (without parser) took 763.60ms. Allocated memory is still 186.6MB. Free memory was 132.9MB in the beginning and 123.0MB in the end (delta: 9.9MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-03-18 13:04:27,887 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 13:04:27,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.45ms. Allocated memory is still 186.6MB. Free memory was 132.7MB in the beginning and 159.0MB in the end (delta: -26.3MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. [2022-03-18 13:04:27,888 INFO L158 Benchmark]: Boogie Preprocessor took 23.97ms. Allocated memory is still 186.6MB. Free memory was 159.0MB in the beginning and 157.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 13:04:27,888 INFO L158 Benchmark]: RCFGBuilder took 163.45ms. Allocated memory is still 186.6MB. Free memory was 157.5MB in the beginning and 148.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 13:04:27,889 INFO L158 Benchmark]: TraceAbstraction took 394.23ms. Allocated memory is still 186.6MB. Free memory was 147.9MB in the beginning and 123.0MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-03-18 13:04:27,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 149.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 164.45ms. Allocated memory is still 186.6MB. Free memory was 132.7MB in the beginning and 159.0MB in the end (delta: -26.3MB). Peak memory consumption was 12.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.97ms. Allocated memory is still 186.6MB. Free memory was 159.0MB in the beginning and 157.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 163.45ms. Allocated memory is still 186.6MB. Free memory was 157.5MB in the beginning and 148.1MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 394.23ms. Allocated memory is still 186.6MB. Free memory was 147.9MB in the beginning and 123.0MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. 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 - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 16. Possible FailurePath: [L12] unsigned int x = 5; VAL [x=5] [L13] COND FALSE !(__VERIFIER_nondet_int()) [L16] CALL __VERIFIER_assert((x & 5) == 5) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 22 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, 19 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=20occurred 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 could not prove your program: unable to determine feasibility of some traces [2022-03-18 13:04:27,918 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...