/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-zilu/benchmark09_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-19 23:28:52,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 23:28:52,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 23:28:52,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 23:28:52,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-19 23:28:52,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 23:28:52,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 23:28:52,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-19 23:28:52,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-19 23:28:52,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 23:28:52,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 23:28:52,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 23:28:52,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 23:28:52,109 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 23:28:52,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 23:28:52,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 23:28:52,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 23:28:52,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 23:28:52,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 23:28:52,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 23:28:52,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 23:28:52,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 23:28:52,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 23:28:52,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 23:28:52,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 23:28:52,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 23:28:52,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 23:28:52,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 23:28:52,333 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 23:28:52,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i [2022-03-19 23:28:52,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7c745b5/30344b4cf78c4db5a87984287debbfa4/FLAG66820ed3f [2022-03-19 23:28:52,736 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 23:28:52,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i [2022-03-19 23:28:52,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7c745b5/30344b4cf78c4db5a87984287debbfa4/FLAG66820ed3f [2022-03-19 23:28:52,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b7c745b5/30344b4cf78c4db5a87984287debbfa4 [2022-03-19 23:28:52,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 23:28:52,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 23:28:52,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 23:28:52,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 23:28:52,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 23:28:52,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22db5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52, skipping insertion in model container [2022-03-19 23:28:52,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 23:28:52,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 23:28:52,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i[873,886] [2022-03-19 23:28:52,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 23:28:52,899 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 23:28:52,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark09_conjunctive.i[873,886] [2022-03-19 23:28:52,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 23:28:52,918 INFO L208 MainTranslator]: Completed translation [2022-03-19 23:28:52,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52 WrapperNode [2022-03-19 23:28:52,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 23:28:52,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 23:28:52,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 23:28:52,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 23:28:52,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 23:28:52,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 23:28:52,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 23:28:52,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 23:28:52,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (1/1) ... [2022-03-19 23:28:52,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 23:28:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 23:28:52,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 23:28:52,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 23:28:52,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 23:28:52,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 23:28:52,986 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 23:28:52,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 23:28:52,987 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 23:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 23:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 23:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 23:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 23:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 23:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 23:28:53,033 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 23:28:53,034 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 23:28:53,102 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 23:28:53,105 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 23:28:53,106 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 23:28:53,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 11:28:53 BoogieIcfgContainer [2022-03-19 23:28:53,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 23:28:53,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 23:28:53,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 23:28:53,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 23:28:53,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 11:28:52" (1/3) ... [2022-03-19 23:28:53,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbe3f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 11:28:53, skipping insertion in model container [2022-03-19 23:28:53,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 11:28:52" (2/3) ... [2022-03-19 23:28:53,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbe3f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 11:28:53, skipping insertion in model container [2022-03-19 23:28:53,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 11:28:53" (3/3) ... [2022-03-19 23:28:53,118 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark09_conjunctive.i [2022-03-19 23:28:53,122 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 23:28:53,122 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 23:28:53,154 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 23:28:53,158 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 23:28:53,159 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 23:28:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 23:28:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-19 23:28:53,173 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 23:28:53,173 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 23:28:53,174 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 23:28:53,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 23:28:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1360020621, now seen corresponding path program 1 times [2022-03-19 23:28:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 23:28:53,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179855769] [2022-03-19 23:28:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:28:53,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 23:28:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 23:28:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 23:28:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 23:28:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179855769] [2022-03-19 23:28:53,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179855769] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 23:28:53,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 23:28:53,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 23:28:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002227409] [2022-03-19 23:28:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 23:28:53,363 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 23:28:53,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 23:28:53,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 23:28:53,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-19 23:28:53,382 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 23:28:53,564 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2022-03-19 23:28:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 23:28:53,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-19 23:28:53,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 23:28:53,570 INFO L225 Difference]: With dead ends: 42 [2022-03-19 23:28:53,570 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 23:28:53,572 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-19 23:28:53,576 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 23:28:53,577 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 47 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 23:28:53,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 23:28:53,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 23:28:53,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-03-19 23:28:53,606 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-03-19 23:28:53,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 23:28:53,606 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-03-19 23:28:53,607 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:53,607 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-03-19 23:28:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-19 23:28:53,607 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 23:28:53,607 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 23:28:53,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 23:28:53,608 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 23:28:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 23:28:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash 824422544, now seen corresponding path program 1 times [2022-03-19 23:28:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 23:28:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243901095] [2022-03-19 23:28:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:28:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 23:28:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 23:28:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 23:28:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 23:28:53,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243901095] [2022-03-19 23:28:53,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243901095] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 23:28:53,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 23:28:53,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 23:28:53,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305636730] [2022-03-19 23:28:53,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 23:28:53,717 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 23:28:53,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 23:28:53,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 23:28:53,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 23:28:53,718 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 23:28:53,777 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-19 23:28:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 23:28:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-03-19 23:28:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 23:28:53,778 INFO L225 Difference]: With dead ends: 20 [2022-03-19 23:28:53,778 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 23:28:53,779 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-19 23:28:53,780 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 23:28:53,780 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 23:28:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 23:28:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 23:28:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-19 23:28:53,784 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-19 23:28:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 23:28:53,784 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-19 23:28:53,784 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-19 23:28:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 23:28:53,785 INFO L491 BasicCegarLoop]: Found error trace [2022-03-19 23:28:53,785 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 23:28:53,785 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 23:28:53,785 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 23:28:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 23:28:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash -181933682, now seen corresponding path program 1 times [2022-03-19 23:28:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 23:28:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428192778] [2022-03-19 23:28:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:28:53,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 23:28:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 23:28:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 23:28:53,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 23:28:53,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428192778] [2022-03-19 23:28:53,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428192778] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 23:28:53,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462654563] [2022-03-19 23:28:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 23:28:53,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 23:28:53,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 23:28:53,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 23:28:53,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 23:28:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 23:28:53,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-19 23:28:53,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 23:28:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 23:28:54,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 23:28:54,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462654563] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 23:28:54,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 23:28:54,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2022-03-19 23:28:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222928383] [2022-03-19 23:28:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 23:28:54,087 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 23:28:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 23:28:54,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 23:28:54,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-19 23:28:54,088 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 23:28:54,117 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-03-19 23:28:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 23:28:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-19 23:28:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 23:28:54,117 INFO L225 Difference]: With dead ends: 15 [2022-03-19 23:28:54,117 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 23:28:54,118 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-19 23:28:54,119 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 23:28:54,119 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 23:28:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 23:28:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 23:28:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-19 23:28:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 23:28:54,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-19 23:28:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 23:28:54,120 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 23:28:54,120 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 23:28:54,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 23:28:54,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 23:28:54,122 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 23:28:54,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 23:28:54,343 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 [2022-03-19 23:28:54,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 23:28:54,384 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2022-03-19 23:28:54,385 INFO L882 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L882 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-03-19 23:28:54,385 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (<= main_~x~0 main_~y~0) (< 0 (+ main_~x~0 1)) (<= main_~y~0 main_~x~0)) [2022-03-19 23:28:54,386 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 27) the Hoare annotation is: (and (<= main_~y~0 0) (< 0 (+ main_~y~0 1))) [2022-03-19 23:28:54,386 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2022-03-19 23:28:54,386 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-19 23:28:54,387 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-19 23:28:54,387 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-19 23:28:54,387 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-19 23:28:54,387 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 23:28:54,387 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 23:28:54,387 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-19 23:28:54,387 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-03-19 23:28:54,387 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-03-19 23:28:54,388 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-19 23:28:54,388 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-03-19 23:28:54,388 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-03-19 23:28:54,388 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-03-19 23:28:54,398 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-19 23:28:54,399 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 23:28:54,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 11:28:54 BoogieIcfgContainer [2022-03-19 23:28:54,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 23:28:54,411 INFO L158 Benchmark]: Toolchain (without parser) took 1659.57ms. Allocated memory was 177.2MB in the beginning and 232.8MB in the end (delta: 55.6MB). Free memory was 123.8MB in the beginning and 130.7MB in the end (delta: -6.9MB). Peak memory consumption was 47.6MB. Max. memory is 8.0GB. [2022-03-19 23:28:54,414 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 177.2MB. Free memory was 140.6MB in the beginning and 140.5MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 23:28:54,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.62ms. Allocated memory was 177.2MB in the beginning and 232.8MB in the end (delta: 55.6MB). Free memory was 123.6MB in the beginning and 209.3MB in the end (delta: -85.7MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-03-19 23:28:54,416 INFO L158 Benchmark]: Boogie Preprocessor took 18.34ms. Allocated memory is still 232.8MB. Free memory was 209.3MB in the beginning and 208.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 23:28:54,416 INFO L158 Benchmark]: RCFGBuilder took 168.74ms. Allocated memory is still 232.8MB. Free memory was 208.2MB in the beginning and 197.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-19 23:28:54,416 INFO L158 Benchmark]: TraceAbstraction took 1302.55ms. Allocated memory is still 232.8MB. Free memory was 196.8MB in the beginning and 130.7MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-03-19 23:28:54,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 177.2MB. Free memory was 140.6MB in the beginning and 140.5MB in the end (delta: 73.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.62ms. Allocated memory was 177.2MB in the beginning and 232.8MB in the end (delta: 55.6MB). Free memory was 123.6MB in the beginning and 209.3MB in the end (delta: -85.7MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.34ms. Allocated memory is still 232.8MB. Free memory was 209.3MB in the beginning and 208.2MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 168.74ms. Allocated memory is still 232.8MB. Free memory was 208.2MB in the beginning and 197.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1302.55ms. Allocated memory is still 232.8MB. Free memory was 196.8MB in the beginning and 130.7MB in the end (delta: 66.1MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 39 mSDtfsCounter, 114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 32 HoareAnnotationTreeSize, 10 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 41 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 2 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 1/2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (x <= y && 0 < x + 1) && y <= x RESULT: Ultimate proved your program to be correct! [2022-03-19 23:28:54,443 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...