/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 21:22:17,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 21:22:17,089 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 21:22:17,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 21:22:17,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 21:22:17,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 21:22:17,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 21:22:17,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 21:22:17,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 21:22:17,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 21:22:17,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 21:22:17,202 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 21:22:17,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 21:22:17,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 21:22:17,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 21:22:17,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 21:22:17,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 21:22:17,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 21:22:17,203 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 21:22:17,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 21:22:17,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:22:17,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 21:22:17,204 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 21:22:17,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 21:22:17,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 21:22:17,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 21:22:17,453 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 21:22:17,453 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 21:22:17,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2022-01-31 21:22:17,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8146e371/2619e75aad254fb2a951989a6547ad33/FLAG04a8882ce [2022-01-31 21:22:17,886 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 21:22:17,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c [2022-01-31 21:22:17,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8146e371/2619e75aad254fb2a951989a6547ad33/FLAG04a8882ce [2022-01-31 21:22:17,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8146e371/2619e75aad254fb2a951989a6547ad33 [2022-01-31 21:22:17,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 21:22:17,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 21:22:17,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 21:22:17,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 21:22:17,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 21:22:17,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:22:17" (1/1) ... [2022-01-31 21:22:17,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7799aeca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:17, skipping insertion in model container [2022-01-31 21:22:17,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:22:17" (1/1) ... [2022-01-31 21:22:17,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 21:22:17,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 21:22:18,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c[319,332] [2022-01-31 21:22:18,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:22:18,063 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 21:22:18,070 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/mono-crafted_12.c[319,332] [2022-01-31 21:22:18,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 21:22:18,079 INFO L208 MainTranslator]: Completed translation [2022-01-31 21:22:18,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18 WrapperNode [2022-01-31 21:22:18,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 21:22:18,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 21:22:18,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 21:22:18,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 21:22:18,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 21:22:18,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 21:22:18,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 21:22:18,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 21:22:18,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (1/1) ... [2022-01-31 21:22:18,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 21:22:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 21:22:18,116 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) [2022-01-31 21:22:18,124 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 [2022-01-31 21:22:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 21:22:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 21:22:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 21:22:18,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 21:22:18,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 21:22:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 21:22:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 21:22:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 21:22:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 21:22:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 21:22:18,148 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 21:22:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 21:22:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 21:22:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 21:22:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 21:22:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 21:22:18,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 21:22:18,193 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 21:22:18,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 21:22:18,314 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 21:22:18,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 21:22:18,318 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 21:22:18,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:22:18 BoogieIcfgContainer [2022-01-31 21:22:18,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 21:22:18,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 21:22:18,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 21:22:18,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 21:22:18,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:22:17" (1/3) ... [2022-01-31 21:22:18,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379fdb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:22:18, skipping insertion in model container [2022-01-31 21:22:18,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:22:18" (2/3) ... [2022-01-31 21:22:18,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379fdb15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:22:18, skipping insertion in model container [2022-01-31 21:22:18,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:22:18" (3/3) ... [2022-01-31 21:22:18,324 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2022-01-31 21:22:18,327 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 21:22:18,327 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 21:22:18,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 21:22:18,391 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=JORDAN [2022-01-31 21:22:18,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 21:22:18,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-01-31 21:22:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 21:22:18,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:22:18,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:22:18,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:22:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:22:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2135496849, now seen corresponding path program 1 times [2022-01-31 21:22:18,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:22:18,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62595455] [2022-01-31 21:22:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:22:18,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:22:18,462 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:22:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:22:18,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:22:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:22:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:22:18,565 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:22:18,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62595455] [2022-01-31 21:22:18,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [62595455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:22:18,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:22:18,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 21:22:18,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740593472] [2022-01-31 21:22:18,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:22:18,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 21:22:18,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:22:18,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 21:22:18,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 21:22:18,588 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-01-31 21:22:18,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:22:18,619 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-01-31 21:22:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 21:22:18,621 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 [2022-01-31 21:22:18,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:22:18,625 INFO L225 Difference]: With dead ends: 33 [2022-01-31 21:22:18,625 INFO L226 Difference]: Without dead ends: 14 [2022-01-31 21:22:18,627 INFO L932 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 [2022-01-31 21:22:18,629 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 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 [2022-01-31 21:22:18,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:22:18,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-01-31 21:22:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-01-31 21:22:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2022-01-31 21:22:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-01-31 21:22:18,654 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-01-31 21:22:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:22:18,654 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-01-31 21:22:18,654 INFO L471 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) [2022-01-31 21:22:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-01-31 21:22:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 21:22:18,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:22:18,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:22:18,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 21:22:18,656 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:22:18,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:22:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2145655580, now seen corresponding path program 1 times [2022-01-31 21:22:18,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:22:18,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974867376] [2022-01-31 21:22:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:22:18,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:22:18,661 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 21:22:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:22:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:22:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:22:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:22:18,737 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:22:18,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974867376] [2022-01-31 21:22:18,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1974867376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:22:18,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:22:18,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 21:22:18,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092710926] [2022-01-31 21:22:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:22:18,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 21:22:18,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:22:18,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 21:22:18,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 21:22:18,739 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-01-31 21:22:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:22:18,789 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-01-31 21:22:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 21:22:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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 [2022-01-31 21:22:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:22:18,790 INFO L225 Difference]: With dead ends: 22 [2022-01-31 21:22:18,790 INFO L226 Difference]: Without dead ends: 17 [2022-01-31 21:22:18,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 21:22:18,792 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:22:18,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 31 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:22:18,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-31 21:22:18,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-31 21:22:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-01-31 21:22:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-01-31 21:22:18,796 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-01-31 21:22:18,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:22:18,797 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-01-31 21:22:18,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 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) [2022-01-31 21:22:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-01-31 21:22:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 21:22:18,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 21:22:18,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 21:22:18,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 21:22:18,798 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 21:22:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 21:22:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1854346422, now seen corresponding path program 1 times [2022-01-31 21:22:18,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 21:22:18,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041322714] [2022-01-31 21:22:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 21:22:18,994 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-01-31 21:22:18,995 INFO L236 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-01-31 21:22:18,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 21:22:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:22:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 21:22:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 21:22:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 21:22:19,126 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 21:22:19,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041322714] [2022-01-31 21:22:19,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1041322714] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 21:22:19,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 21:22:19,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-31 21:22:19,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481154849] [2022-01-31 21:22:19,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 21:22:19,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 21:22:19,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 21:22:19,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 21:22:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 21:22:19,128 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-01-31 21:22:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 21:22:19,199 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2022-01-31 21:22:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 21:22:19,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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 14 [2022-01-31 21:22:19,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 21:22:19,200 INFO L225 Difference]: With dead ends: 26 [2022-01-31 21:22:19,201 INFO L226 Difference]: Without dead ends: 0 [2022-01-31 21:22:19,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 21:22:19,208 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 21:22:19,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 21:22:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-31 21:22:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-31 21:22:19,211 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) [2022-01-31 21:22:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-31 21:22:19,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-01-31 21:22:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 21:22:19,212 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-31 21:22:19,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-01-31 21:22:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-31 21:22:19,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-31 21:22:19,214 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 21:22:19,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 21:22:19,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-31 21:22:19,310 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-01-31 21:22:19,310 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-01-31 21:22:19,310 INFO L858 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-01-31 21:22:19,310 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-01-31 21:22:19,310 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-01-31 21:22:19,311 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-01-31 21:22:19,311 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-01-31 21:22:19,311 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-01-31 21:22:19,311 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-01-31 21:22:19,311 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-01-31 21:22:19,312 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 6 17) the Hoare annotation is: true [2022-01-31 21:22:19,312 INFO L861 garLoopResultBuilder]: At program point mainEXIT(lines 6 17) the Hoare annotation is: true [2022-01-31 21:22:19,312 INFO L861 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2022-01-31 21:22:19,312 INFO L861 garLoopResultBuilder]: At program point mainFINAL(lines 6 17) the Hoare annotation is: true [2022-01-31 21:22:19,312 INFO L854 garLoopResultBuilder]: At program point L11(lines 11 12) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-01-31 21:22:19,313 INFO L854 garLoopResultBuilder]: At program point L11-2(lines 11 12) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-01-31 21:22:19,313 INFO L854 garLoopResultBuilder]: At program point L10-2(lines 10 14) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-01-31 21:22:19,313 INFO L854 garLoopResultBuilder]: At program point L10-3(lines 10 14) the Hoare annotation is: (let ((.cse0 (div main_~z~0 2))) (and (<= main_~z~0 (* 2 .cse0)) (not (<= (+ .cse0 1) 0)))) [2022-01-31 21:22:19,313 INFO L861 garLoopResultBuilder]: At program point L4-3(line 4) the Hoare annotation is: true [2022-01-31 21:22:19,313 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 4) the Hoare annotation is: true [2022-01-31 21:22:19,313 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(line 4) the Hoare annotation is: true [2022-01-31 21:22:19,313 INFO L854 garLoopResultBuilder]: At program point L4(line 4) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-01-31 21:22:19,313 INFO L854 garLoopResultBuilder]: At program point L4-1(line 4) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-01-31 21:22:19,314 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-01-31 21:22:19,317 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-31 21:22:19,319 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 21:22:19,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:22:19 BoogieIcfgContainer [2022-01-31 21:22:19,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 21:22:19,335 INFO L158 Benchmark]: Toolchain (without parser) took 1430.51ms. Allocated memory is still 197.1MB. Free memory was 147.7MB in the beginning and 96.5MB in the end (delta: 51.2MB). Peak memory consumption was 51.6MB. Max. memory is 8.0GB. [2022-01-31 21:22:19,335 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 21:22:19,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.87ms. Allocated memory is still 197.1MB. Free memory was 147.6MB in the beginning and 174.1MB in the end (delta: -26.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 21:22:19,335 INFO L158 Benchmark]: Boogie Preprocessor took 15.41ms. Allocated memory is still 197.1MB. Free memory was 174.1MB in the beginning and 172.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 21:22:19,336 INFO L158 Benchmark]: RCFGBuilder took 222.82ms. Allocated memory is still 197.1MB. Free memory was 172.6MB in the beginning and 162.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 21:22:19,336 INFO L158 Benchmark]: TraceAbstraction took 1013.87ms. Allocated memory is still 197.1MB. Free memory was 162.1MB in the beginning and 96.5MB in the end (delta: 65.6MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2022-01-31 21:22:19,337 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 197.1MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.87ms. Allocated memory is still 197.1MB. Free memory was 147.6MB in the beginning and 174.1MB in the end (delta: -26.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.41ms. Allocated memory is still 197.1MB. Free memory was 174.1MB in the beginning and 172.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 222.82ms. Allocated memory is still 197.1MB. Free memory was 172.6MB in the beginning and 162.6MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1013.87ms. Allocated memory is still 197.1MB. Free memory was 162.1MB in the beginning and 96.5MB in the end (delta: 65.6MB). 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: 4]: 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: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 43 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 21 LocationsWithAnnotation, 39 PreInvPairs, 61 NumberOfFragments, 98 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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: 10]: Loop Invariant Derived loop invariant: z <= 2 * (z / 2) && !(z / 2 + 1 <= 0) - ProcedureContractResult [Line: 6]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-01-31 21:22:19,362 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...