/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/array-programs/partial_mod_count_limited_base.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 19:10:46,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 19:10:46,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 19:10:46,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 19:10:46,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 19:10:46,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 19:10:46,290 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 19:10:46,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 19:10:46,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 19:10:46,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 19:10:46,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 19:10:46,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 19:10:46,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 19:10:46,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 19:10:46,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 19:10:46,312 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 19:10:46,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 19:10:46,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 19:10:46,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 19:10:46,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 19:10:46,323 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 19:10:46,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 19:10:46,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 19:10:46,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 19:10:46,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 19:10:46,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 19:10:46,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 19:10:46,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 19:10:46,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 19:10:46,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 19:10:46,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 19:10:46,331 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 19:10:46,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 19:10:46,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 19:10:46,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 19:10:46,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 19:10:46,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 19:10:46,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 19:10:46,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 19:10:46,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:10:46,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 19:10:46,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 19:10:46,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 19:10:46,332 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 19:10:46,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 19:10:46,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 19:10:46,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 19:10:46,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 19:10:46,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 19:10:46,500 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 19:10:46,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2022-01-31 19:10:46,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13aa8ac8a/7b1410fec5124f68ae62f1158a64e66f/FLAG1e96579ba [2022-01-31 19:10:46,855 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 19:10:46,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c [2022-01-31 19:10:46,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13aa8ac8a/7b1410fec5124f68ae62f1158a64e66f/FLAG1e96579ba [2022-01-31 19:10:47,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13aa8ac8a/7b1410fec5124f68ae62f1158a64e66f [2022-01-31 19:10:47,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 19:10:47,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 19:10:47,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 19:10:47,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 19:10:47,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 19:10:47,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a65b3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47, skipping insertion in model container [2022-01-31 19:10:47,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 19:10:47,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 19:10:47,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c[334,347] [2022-01-31 19:10:47,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:10:47,439 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 19:10:47,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_base.c[334,347] [2022-01-31 19:10:47,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 19:10:47,463 INFO L208 MainTranslator]: Completed translation [2022-01-31 19:10:47,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47 WrapperNode [2022-01-31 19:10:47,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 19:10:47,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 19:10:47,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 19:10:47,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 19:10:47,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 19:10:47,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 19:10:47,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 19:10:47,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 19:10:47,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (1/1) ... [2022-01-31 19:10:47,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 19:10:47,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 19:10:47,506 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 19:10:47,507 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 19:10:47,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 19:10:47,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 19:10:47,542 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 19:10:47,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 19:10:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 19:10:47,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 19:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 19:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 19:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 19:10:47,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 19:10:47,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 19:10:47,595 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 19:10:47,596 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 19:10:47,833 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 19:10:47,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 19:10:47,841 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 19:10:47,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:10:47 BoogieIcfgContainer [2022-01-31 19:10:47,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 19:10:47,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 19:10:47,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 19:10:47,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 19:10:47,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 07:10:47" (1/3) ... [2022-01-31 19:10:47,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecc7456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:10:47, skipping insertion in model container [2022-01-31 19:10:47,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:10:47" (2/3) ... [2022-01-31 19:10:47,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ecc7456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 07:10:47, skipping insertion in model container [2022-01-31 19:10:47,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:10:47" (3/3) ... [2022-01-31 19:10:47,851 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_base.c [2022-01-31 19:10:47,855 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 19:10:47,855 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 19:10:47,895 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 19:10:47,902 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 19:10:47,902 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 19:10:47,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 19:10:47,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 19:10:47,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:47,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:47,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:47,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2033071227, now seen corresponding path program 1 times [2022-01-31 19:10:47,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:47,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723087399] [2022-01-31 19:10:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:47,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:47,988 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:10:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,098 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 19:10:48,099 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:48,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723087399] [2022-01-31 19:10:48,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [1723087399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:48,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:48,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 19:10:48,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594202028] [2022-01-31 19:10:48,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:48,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 19:10:48,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 19:10:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 19:10:48,123 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 19:10:48,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:48,169 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2022-01-31 19:10:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 19:10:48,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-01-31 19:10:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:48,179 INFO L225 Difference]: With dead ends: 57 [2022-01-31 19:10:48,179 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 19:10:48,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 19:10:48,183 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:48,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 31 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 19:10:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 19:10:48,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-31 19:10:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:10:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 19:10:48,219 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2022-01-31 19:10:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:48,219 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 19:10:48,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 19:10:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 19:10:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 19:10:48,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:48,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:48,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 19:10:48,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash -2003730631, now seen corresponding path program 1 times [2022-01-31 19:10:48,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:48,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780000945] [2022-01-31 19:10:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:48,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:48,229 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:10:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,349 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 19:10:48,349 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:48,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780000945] [2022-01-31 19:10:48,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [780000945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:48,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:48,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 19:10:48,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500578220] [2022-01-31 19:10:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:48,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 19:10:48,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 19:10:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 19:10:48,351 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:48,472 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-01-31 19:10:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 19:10:48,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-01-31 19:10:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:48,475 INFO L225 Difference]: With dead ends: 53 [2022-01-31 19:10:48,475 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 19:10:48,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:10:48,481 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 69 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:48,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 24 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:10:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 19:10:48,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-01-31 19:10:48,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:10:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 19:10:48,500 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2022-01-31 19:10:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:48,501 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 19:10:48,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 19:10:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 19:10:48,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:48,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:48,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 19:10:48,510 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1543382071, now seen corresponding path program 1 times [2022-01-31 19:10:48,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:48,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331261660] [2022-01-31 19:10:48,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:48,527 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:48,528 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:48,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:48,530 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:48,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:10:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,631 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 19:10:48,631 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:48,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331261660] [2022-01-31 19:10:48,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [331261660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:48,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:48,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 19:10:48,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812536543] [2022-01-31 19:10:48,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:48,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 19:10:48,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:48,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 19:10:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-31 19:10:48,632 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:48,759 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-01-31 19:10:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 19:10:48,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-01-31 19:10:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:48,761 INFO L225 Difference]: With dead ends: 44 [2022-01-31 19:10:48,761 INFO L226 Difference]: Without dead ends: 42 [2022-01-31 19:10:48,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 19:10:48,766 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:48,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 45 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:10:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-01-31 19:10:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-01-31 19:10:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:10:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-01-31 19:10:48,786 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 25 [2022-01-31 19:10:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:48,786 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-01-31 19:10:48,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 19:10:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-01-31 19:10:48,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 19:10:48,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:48,787 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:48,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 19:10:48,787 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:48,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -935431050, now seen corresponding path program 1 times [2022-01-31 19:10:48,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:48,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338415975] [2022-01-31 19:10:48,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:48,790 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:48,790 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:48,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:48,791 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 19:10:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 19:10:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-01-31 19:10:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 19:10:48,858 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 19:10:48,858 INFO L139 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-01-31 19:10:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338415975] [2022-01-31 19:10:48,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModulePreferences [338415975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 19:10:48,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 19:10:48,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 19:10:48,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602521414] [2022-01-31 19:10:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 19:10:48,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 19:10:48,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-01-31 19:10:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 19:10:48,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 19:10:48,859 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:10:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 19:10:48,985 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2022-01-31 19:10:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 19:10:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2022-01-31 19:10:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 19:10:48,987 INFO L225 Difference]: With dead ends: 89 [2022-01-31 19:10:48,987 INFO L226 Difference]: Without dead ends: 66 [2022-01-31 19:10:48,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-01-31 19:10:48,990 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 100 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 19:10:48,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 25 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 19:10:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-01-31 19:10:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2022-01-31 19:10:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 19:10:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2022-01-31 19:10:48,999 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 33 [2022-01-31 19:10:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 19:10:49,002 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2022-01-31 19:10:49,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 19:10:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2022-01-31 19:10:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-31 19:10:49,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 19:10:49,003 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 19:10:49,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-31 19:10:49,004 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 19:10:49,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 19:10:49,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1145483130, now seen corresponding path program 1 times [2022-01-31 19:10:49,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 19:10:49,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310288635] [2022-01-31 19:10:49,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 19:10:49,012 INFO L87 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-01-31 19:10:49,012 WARN L89 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-01-31 19:10:49,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 19:10:49,014 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 19:10:49,038 WARN L127 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2022-01-31 19:10:49,039 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2022-01-31 19:10:49,044 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 19:10:49,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-31 19:10:49,047 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-01-31 19:10:49,049 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 19:10:49,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 07:10:49 BoogieIcfgContainer [2022-01-31 19:10:49,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 19:10:49,057 INFO L158 Benchmark]: Toolchain (without parser) took 1770.09ms. Allocated memory was 174.1MB in the beginning and 232.8MB in the end (delta: 58.7MB). Free memory was 120.1MB in the beginning and 107.6MB in the end (delta: 12.6MB). Peak memory consumption was 71.0MB. Max. memory is 8.0GB. [2022-01-31 19:10:49,058 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 19:10:49,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.00ms. Allocated memory was 174.1MB in the beginning and 232.8MB in the end (delta: 58.7MB). Free memory was 119.9MB in the beginning and 205.1MB in the end (delta: -85.2MB). Peak memory consumption was 10.3MB. Max. memory is 8.0GB. [2022-01-31 19:10:49,062 INFO L158 Benchmark]: Boogie Preprocessor took 20.79ms. Allocated memory is still 232.8MB. Free memory was 205.1MB in the beginning and 203.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 19:10:49,063 INFO L158 Benchmark]: RCFGBuilder took 356.95ms. Allocated memory is still 232.8MB. Free memory was 203.0MB in the beginning and 190.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 19:10:49,065 INFO L158 Benchmark]: TraceAbstraction took 1213.74ms. Allocated memory is still 232.8MB. Free memory was 190.4MB in the beginning and 107.6MB in the end (delta: 82.8MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. [2022-01-31 19:10:49,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 174.1MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 172.00ms. Allocated memory was 174.1MB in the beginning and 232.8MB in the end (delta: 58.7MB). Free memory was 119.9MB in the beginning and 205.1MB in the end (delta: -85.2MB). Peak memory consumption was 10.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.79ms. Allocated memory is still 232.8MB. Free memory was 205.1MB in the beginning and 203.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 356.95ms. Allocated memory is still 232.8MB. Free memory was 203.0MB in the beginning and 190.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1213.74ms. Allocated memory is still 232.8MB. Free memory was 190.4MB in the beginning and 107.6MB in the end (delta: 82.8MB). Peak memory consumption was 82.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L10] int N = 1000000; [L12] int i,j=0,k=0,a[N]; [L13] unsigned int R=__VERIFIER_nondet_int(); [L14] CALL assume_abort_if_not(R>0) [L7] COND FALSE !(!cond) [L14] RET assume_abort_if_not(R>0) [L15] i=0 [L15] COND TRUE iN/2 && k<1) [L19] EXPR a[i] [L19] COND FALSE !(a[i]==0) [L15] i++ [L15] COND TRUE iN/2 && k<1 [L18] a[i]=i%R [L19] EXPR a[i] [L19] COND FALSE !(a[i]==0) [L15] i++ [L15] COND FALSE !(i