/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:33:20,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:33:20,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:33:20,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:33:20,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:33:20,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:33:20,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:33:20,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:33:20,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:33:20,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:33:20,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:33:20,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:33:20,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:33:20,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:33:20,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:33:20,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:33:20,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:33:20,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:33:20,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:33:20,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:33:20,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:33:20,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:33:20,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:33:20,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:33:20,566 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:33:20,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:33:20,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:33:20,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:33:20,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:33:20,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:33:20,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:33:20,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:33:20,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:33:20,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:33:20,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:33:20,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:33:20,569 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:33:20,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:33:20,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:33:20,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:33:20,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:33:20,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:33:20,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:33:20,571 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:33:20,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:33:20,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:33:21,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:33:21,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:33:21,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:33:21,020 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:33:21,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2021-02-22 01:33:21,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/912a4f14f/ca10db48214b43fa966eb398aec37143/FLAG217a92ed5 [2021-02-22 01:33:21,684 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:33:21,685 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2021-02-22 01:33:21,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/912a4f14f/ca10db48214b43fa966eb398aec37143/FLAG217a92ed5 [2021-02-22 01:33:22,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/912a4f14f/ca10db48214b43fa966eb398aec37143 [2021-02-22 01:33:22,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:33:22,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:33:22,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:33:22,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:33:22,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:33:22,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9219a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22, skipping insertion in model container [2021-02-22 01:33:22,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:33:22,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:33:22,241 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c[839,852] [2021-02-22 01:33:22,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:33:22,255 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:33:22,271 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c[839,852] [2021-02-22 01:33:22,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:33:22,287 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:33:22,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22 WrapperNode [2021-02-22 01:33:22,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:33:22,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:33:22,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:33:22,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:33:22,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... [2021-02-22 01:33:22,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:33:22,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:33:22,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:33:22,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:33:22,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:33:22,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:33:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:33:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:33:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-02-22 01:33:22,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:33:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:33:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:33:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:33:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:33:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:33:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:33:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:33:22,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:33:22,667 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:33:22,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:33:22 BoogieIcfgContainer [2021-02-22 01:33:22,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:33:22,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:33:22,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:33:22,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:33:22,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:33:22" (1/3) ... [2021-02-22 01:33:22,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa5cdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:33:22, skipping insertion in model container [2021-02-22 01:33:22,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:33:22" (2/3) ... [2021-02-22 01:33:22,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa5cdba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:33:22, skipping insertion in model container [2021-02-22 01:33:22,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:33:22" (3/3) ... [2021-02-22 01:33:22,709 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2021-02-22 01:33:22,723 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:33:22,750 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:33:22,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:33:22,804 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:33:22,805 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:33:22,805 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:33:22,805 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:33:22,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:33:22,805 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:33:22,806 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:33:22,806 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:33:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-22 01:33:22,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-22 01:33:22,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:33:22,839 INFO L422 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, 1, 1] [2021-02-22 01:33:22,840 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:33:22,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:33:22,848 INFO L82 PathProgramCache]: Analyzing trace with hash 378607813, now seen corresponding path program 1 times [2021-02-22 01:33:22,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:33:22,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132232719] [2021-02-22 01:33:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:33:22,953 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:33:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:23,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:23,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:23,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:23,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:23,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:33:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:23,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:33:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:23,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:23,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:23,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:33:23,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132232719] [2021-02-22 01:33:23,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:33:23,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 01:33:23,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911705648] [2021-02-22 01:33:23,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 01:33:23,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:33:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 01:33:23,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 01:33:23,451 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 6 states. [2021-02-22 01:33:23,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:33:23,889 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-02-22 01:33:23,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 01:33:23,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-22 01:33:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:33:23,909 INFO L225 Difference]: With dead ends: 54 [2021-02-22 01:33:23,909 INFO L226 Difference]: Without dead ends: 34 [2021-02-22 01:33:23,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:33:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-02-22 01:33:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-02-22 01:33:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-22 01:33:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-02-22 01:33:23,988 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2021-02-22 01:33:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:33:23,989 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-02-22 01:33:23,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 01:33:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-02-22 01:33:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 01:33:23,993 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:33:23,994 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-02-22 01:33:23,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:33:23,994 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:33:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:33:24,006 INFO L82 PathProgramCache]: Analyzing trace with hash -988587653, now seen corresponding path program 1 times [2021-02-22 01:33:24,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:33:24,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115654260] [2021-02-22 01:33:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:33:24,013 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:33:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:33:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,192 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:33:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,232 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:24,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:33:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-22 01:33:24,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115654260] [2021-02-22 01:33:24,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:33:24,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:33:24,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101025029] [2021-02-22 01:33:24,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:33:24,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:33:24,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:33:24,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:33:24,294 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2021-02-22 01:33:24,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:33:24,638 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-02-22 01:33:24,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 01:33:24,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2021-02-22 01:33:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:33:24,640 INFO L225 Difference]: With dead ends: 45 [2021-02-22 01:33:24,640 INFO L226 Difference]: Without dead ends: 39 [2021-02-22 01:33:24,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-02-22 01:33:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-22 01:33:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-02-22 01:33:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-22 01:33:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-02-22 01:33:24,655 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2021-02-22 01:33:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:33:24,656 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-02-22 01:33:24,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:33:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-02-22 01:33:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-22 01:33:24,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:33:24,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2021-02-22 01:33:24,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:33:24,658 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:33:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:33:24,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2105714043, now seen corresponding path program 2 times [2021-02-22 01:33:24,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:33:24,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89295049] [2021-02-22 01:33:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:33:24,662 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:33:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:33:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-22 01:33:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,763 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:33:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 01:33:24,812 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-22 01:33:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:33:24,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:33:24,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:33:24,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:33:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-22 01:33:24,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89295049] [2021-02-22 01:33:24,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:33:24,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-22 01:33:24,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395712087] [2021-02-22 01:33:24,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-22 01:33:24,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:33:24,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-22 01:33:24,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-02-22 01:33:24,844 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states. [2021-02-22 01:33:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:33:25,301 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-02-22 01:33:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 01:33:25,302 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2021-02-22 01:33:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:33:25,302 INFO L225 Difference]: With dead ends: 39 [2021-02-22 01:33:25,302 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:33:25,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-02-22 01:33:25,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:33:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:33:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:33:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:33:25,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-02-22 01:33:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:33:25,305 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:33:25,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-22 01:33:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:33:25,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:33:25,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 01:33:25,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:33:25,924 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:33:25,924 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:33:25,924 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:33:25,924 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:33:25,925 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:33:25,925 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,925 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:33:25,925 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,939 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:33:25,939 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-22 01:33:25,940 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:33:25,940 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:33:25,940 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,940 INFO L185 CegarLoopUtils]: At program point hanoiEXIT(lines 20 25) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2021-02-22 01:33:25,940 INFO L192 CegarLoopUtils]: At program point hanoiENTRY(lines 20 25) the Hoare annotation is: true [2021-02-22 01:33:25,940 INFO L185 CegarLoopUtils]: At program point hanoiFINAL(lines 20 25) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2021-02-22 01:33:25,941 INFO L192 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: true [2021-02-22 01:33:25,941 INFO L185 CegarLoopUtils]: At program point L24-1(line 24) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret7|) (= |hanoi_#t~ret7| 1)) [2021-02-22 01:33:25,941 INFO L192 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: true [2021-02-22 01:33:25,941 INFO L185 CegarLoopUtils]: At program point L24-2(line 24) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret7|) (= |hanoi_#t~ret7| 1)) [2021-02-22 01:33:25,941 INFO L192 CegarLoopUtils]: At program point L21(lines 21 23) the Hoare annotation is: true [2021-02-22 01:33:25,941 INFO L185 CegarLoopUtils]: At program point L24-3(line 24) the Hoare annotation is: (or (and (= |hanoi_#t~ret7| 1) (<= 3 |hanoi_#res|)) (and (<= 3 |hanoi_#t~ret7|) (<= 7 |hanoi_#res|))) [2021-02-22 01:33:25,942 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,942 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,942 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,942 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:33:25,942 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-22 01:33:25,942 INFO L185 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (or (<= 3 |main_#t~ret9|) (= |main_#t~ret9| 1)) [2021-02-22 01:33:25,943 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) the Hoare annotation is: false [2021-02-22 01:33:25,943 INFO L192 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: true [2021-02-22 01:33:25,943 INFO L185 CegarLoopUtils]: At program point L33-2(line 33) the Hoare annotation is: (or (<= 3 |main_#t~ret9|) (= |main_#t~ret9| 1)) [2021-02-22 01:33:25,943 INFO L192 CegarLoopUtils]: At program point L30(lines 30 32) the Hoare annotation is: true [2021-02-22 01:33:25,943 INFO L185 CegarLoopUtils]: At program point L33-3(line 33) the Hoare annotation is: (or (and (<= 3 main_~result~0) (<= 3 |main_#t~ret9|)) (and (= main_~result~0 1) (= |main_#t~ret9| 1))) [2021-02-22 01:33:25,944 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 28 39) the Hoare annotation is: true [2021-02-22 01:33:25,944 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-22 01:33:25,944 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-22 01:33:25,944 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 28 39) the Hoare annotation is: true [2021-02-22 01:33:25,944 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 28 39) the Hoare annotation is: true [2021-02-22 01:33:25,944 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: false [2021-02-22 01:33:25,944 INFO L185 CegarLoopUtils]: At program point L37-1(line 37) the Hoare annotation is: false [2021-02-22 01:33:25,945 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-22 01:33:25,945 INFO L185 CegarLoopUtils]: At program point L34(lines 34 38) the Hoare annotation is: (or (= main_~result~0 1) (<= 3 main_~result~0)) [2021-02-22 01:33:25,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:33:25 BoogieIcfgContainer [2021-02-22 01:33:25,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:33:25,966 INFO L168 Benchmark]: Toolchain (without parser) took 3910.09 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 129.7 MB in the beginning and 164.4 MB in the end (delta: -34.8 MB). Peak memory consumption was 101.2 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:25,967 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:33:25,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.77 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:25,969 INFO L168 Benchmark]: Boogie Preprocessor took 29.27 ms. Allocated memory is still 153.1 MB. Free memory was 119.3 MB in the beginning and 117.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:25,969 INFO L168 Benchmark]: RCFGBuilder took 353.51 ms. Allocated memory is still 153.1 MB. Free memory was 117.9 MB in the beginning and 103.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:25,970 INFO L168 Benchmark]: TraceAbstraction took 3288.29 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 103.1 MB in the beginning and 164.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:33:25,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 220.77 ms. Allocated memory is still 153.1 MB. Free memory was 128.5 MB in the beginning and 119.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.27 ms. Allocated memory is still 153.1 MB. Free memory was 119.3 MB in the beginning and 117.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 353.51 ms. Allocated memory is still 153.1 MB. Free memory was 117.9 MB in the beginning and 103.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3288.29 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 103.1 MB in the beginning and 164.4 MB in the end (delta: -61.3 MB). Peak memory consumption was 75.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 20]: Procedure Contract for hanoi Derived contract for procedure hanoi: \result == 1 || 3 <= \result - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 81 SDslu, 229 SDs, 0 SdLazy, 364 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, 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, 39 LocationsWithAnnotation, 48 PreInvPairs, 77 NumberOfFragments, 139 HoareAnnotationTreeSize, 48 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 39 FomulaSimplificationsInter, 1359 FormulaSimplificationTreeSizeReductionInter, 0.4s 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...